APPENDIX F-Q 

Special-Status Plant and Wildlife Species 

Table 1. Special-status Plants with Potential to Occur in the Vicinity of the DesertXpress Project: California 

Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Chaparral sand-verbena

Abronia villosa var.

aurita

–/–/1B.1/–/– Central and southern South Coast, 

western Sonora desert

Sandy soils in chaparral, coastal scrub, 

desert dunes; 80–1,600 meters

Jan–Sep Potential, suitable 

habitat present.

Mormon needle grass

Achnatherum aridum

–/–/2.3/–/– Eastern Mojave desert with 

occurrences in Inyo, Mono, and 

San Bernardino Counties; Nevada, 

Arizona

Carbonate soils in pinyon-juniper 

woodland, Joshua tree woodland; 500–

2,570 meters

May–Jul Potential, suitable 

habitat present; known 

to occur in Mountain 

Pass near study area.

Desert Aerating

Aerating herbacea

–/–/2.3/–/– Eastern Desert mountains; 

Colorado, New Mexico, Texas

Rocky soils in pinyon-juniper woodland; 

1,525–2,200 meters

Jul–Oct No potential; no 

suitable habitat 

present, although 

species occurs within 

ten miles.

Ripley’s aliciella (gilia)

Aliciella ripleyi

(formerly Gilia ripleyi)

–/–/2.3/–/NE Mojave Desert in Inyo and San 

Bernardino Counties; Nevada

Carbonate soils in Mohavean desert 

scrub; 305-1,900 meters

May-Jul Potential, suitable 

habitat present.

Nevada onion

Allium nevadense

–/–/2.3/–/– Desert mountains Sandy or gravelly soils in pinyonjuniper woodland; 1,300–1,700 metersApr–May No potential, no 

suitable habitat 

present.

Spanish needle onion

Allium shevockii

–/–/1B.3/–/W Southern high Sierra Nevada: 

Spanish Needle Peak in 

northeastern Kern County

Rocky areas in pinyon-juniper 

woodland and upper montane 

coniferous forest; 1,465-2,500 meters

Jun No potential, outside 

range of species, no 

suitable habitat 

present.

Small-flowered 

androstephium

Androstephium 

breviflorum

–/–/2.3/–/W Eastern Desert with occurrences in 

Inyo, Riverside, and San 

Bernardino Counties; Arizona, 

Nevada, Utah

Desert dunes, bajadas in Mohavean 

desert scrub; 220–640 meters

Mar–Apr Potential, suitable 

habitat present; known 

to occur close to study 

area.

Darwin rock cress 

Arabis pulchra var. 

munciensis

–/–/2.3/S/NE Great Basin, Mojave Desert 

regions, including portions of Inyo, 

San Bernardino Counties; Nevada

Carbonate soils in chenopod scrub, 

Mohavean desert scrub; 1,100-2,075 

meters

Apr Potential but unlikely, 

suitable habitat 

present.

Shockley’s rock cress 

Arabis shockleyi

–/–/2.2/–/NE San Bernardino Mountains, Mojave 

Desert: Inyo and San Bernardino 

Counties; Nevada, Utah

Carbonate or quartzite, rocky or 

gravelly soils in pinyon-juniper 

woodland; 875-2,205 meters

May-Jun No potential, no 

suitable habitat 

present.

F-Q-1
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

White bear poppy

Arctomecon merriamii

–/–/2.2/–/NE Northeastern Mojave desert; 

southern Nevada

Rocky soils in chenopod scrub, 

Mojavean desert scrub; 490–1,800 

meters

Apr–May Potential, suitable 

habitat present.

Charleston sandwort

Arenaria congesta var.

charlestonensis

–/–/1B.3/–/– Desert mountains; southwest 

Nevada

Sandy soils in pinyon-juniper woodland; 

2,200–2,225 meters

Jun No potential, no 

suitable habitat 

present.

Cloak fern

Argyrochosma limitanea 

var. limitanea

–/–/2.3/–/NE Eastern Desert mountains; Utah, 

New Mexico, northwestern Mexico

Carbonate, rocky soils in pinyon-juniper 

woodland; 1,800 meters

Sporolates 

from Apr–Oct

No potential, no 

suitable habitat 

present.

Mojave milkweed

Asclepias nyctaginifolia

–/–/2.3/–/– Mojave Desert; New Mexico Mojavean desert scrub, pinyon-juniper 

woodland; 1,000–1,700 meters

May–Jun Potential, suitable 

habitat present.

Cushenbury milk-vetch

Astragalus albens

E/–/1B.1/–/W Known from fewer than 20 

occurrences in San Bernardino

County, including the Northeast 

San Bernardino Mountains and 

Cushenbury Canyon

Carbonate or granitic soils in Joshua 

tree woodland, Mohavean desert scrub, 

pinyon-juniper woodland; 1,095-2,000 

meters

Mar-May No potential, outside 

known range of this 

highly localized 

species.

Playa milk-vetch

Astragalus allochrous

var. playanus

–/–/2.2/–/NE Eastern Mojave Desert in San 

Bernardino County; Arizona, New 

Mexico, Texas, Utah

Sandy areas in Mohavean desert 

scrub; 800 meters

Apr Potential, suitable 

habitat present.

Darwin Mesa milk-vetch

Astragalus atratus var. 

mensanus

–/–/1B.1/S/NE Desert mountains north and west 

of Panamint Valley, Inyo County

Volcanic clay or gravelly soils in Great 

Basin scrub, Joshua tree woodland, 

pinyon-juniper woodland; 1,340-2,315 

meters

Apr-Jun No potential, outside 

range of species.

Cima milk-vetch

Astragalus cimae var. 

cimae

–/–/1B.2/–/– Eastern Desert mountains Clay soils in pinyon-juniper woodland, 

Great Basin scrub, Joshua tree 

woodland; 890–1,850 meters

Apr–May Potential, suitable 

habitat present.

Walker Pass milk-vetch

Astragalus ertterae

–/–/1B.3/–/W Reported occurrences near Walker 

Pass in Kern County in the 

Southern High Sierra

Pinyon-juniper woodland on sandy, 

granitic soils; 1,705-1,900 meters

Apr-May No potential, outside 

range of species, no 

suitable habitat 

present.

Black milk-vetch

Astragalus funereus

–/–/1B.2/S/NE Northeastern desert mountains, 

Funeral mountains (east of Death 

Valley) in Inyo County; also 

Nevada

Mojavean desert scrub, sometimes on 

carbonate, gravelly, clay, or rocky soils; 

1,280-1,500 meters

Mar-May No potential, outside 

range of species.

F-Q-2
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Geyer’s milk-vetch

Astragalus geyeri var. 

geyeri

–/–/2.2/S/NE East of Sierra Nevada: Inyo, 

Lassen, and Mono Counties; 

Nevada, Oregon, Washington, and 

elsewhere

Sandy soils in chenopod scrub, Great 

Basin scrub; 1,160-1,550 meters

May-Aug No potential, outside 

range of species.

Gilman’s milk-vetch

Astragalus gilmanii

–/–/1B.2/S/NE Northern desert mountains, 

Panamint Mountains in Inyo 

County; also Nevada

Gravelly or rocky soils in Great Basin 

scrub, pinyon-juniper woodland; 2,000-

3,050 meters

May-Aug No potential, outside 

range of species, no 

suitable habitat 

present.

Lane Mountain milkvetch 

Astragalus jaegerianus

E/–/1B.1/–/W Vicinity of Lane Mountain, San 

Bernardino County

Granitic, sandy or gravelly substrates in 

Joshua tree woodland and Mohavean 

desert scrub, on dry stony hillsides and 

desert mesas, usually under shrubs; 

900-1,200 meters

Apr-Jun No potential, outside 

range of species.

Shining milk-vetch\

Astragalus lentiginosus 

var. micans

–/–/1B.2/–/NE Northern Mojave Desert, Eureka 

Valley in Inyo County

Desert dunes; 770-1,175 meters Mar-Jun No potential, outside 

range of species.

Sodaville milk-vetch

Astragalus lentiginosus 

var. sesquimetralis

–/E/1B.1/–/NE Northern Mojave Desert, northern 

Death Valley, eastern slope of Last 

Chance Mountains in Inyo County; 

also adjacent Nevada

Alkaline meadows and seeps; 955-965 

meters

Apr-Jul No potential, outside 

range of species.

Curved-pod milk-vetch 

Astragalus mojavensis 

var. hemigyrus

–/–/1A/–/NE Formerly known from desert 

mountains, Darwin Mesa, west of 

Death Valley in Inyo* County; 

Nevada

Carbonate soils in Joshua tree 

woodland, Mohavean desert scrub; 

1,250-1,600 meters

Apr-Jun No potential, outside 

range of species.

Little big-pod or broadkeeled milk-vetch

Astragalus platytropis

–/–/2.2/–/NE East of Sierra Nevada: Inyo and 

Mono Counties; Idaho, Nevada, 

Oregon, Utah, and elsewhere

Rocky areas in alpine boulder and rock 

field, pinyon-juniper woodland, 

subalpine coniferous forest; 2,345-

3,550 meters

Jun-Sep No potential, outside 

range of species, no 

suitable habitat 

present.

Preuss’s milk-vetch

Astragalus preussii var. 

preussii

–/–/2.3/–/NE Eastern Mojave Desert, 

southeastern Inyo County, 

northeastern San Bernardino 

County; Arizona, Nevada, Utah

Clay soils in chenopod scrub, 

Mohavean desert scrub; 750-780 

meters

May-Jun Potential, suitable 

habitat present.

F-Q-3
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Naked milk-vetch

Astragalus serenoi var. 

shockleyi

–/–/2.2/–/NE White and Indio mountains, 

northern desert mountains: Inyo 

and Mono Counties; Nevada

Alkaline, granitic alluvium soils in 

chenopod scrub, Great Basin scrub, 

pinyon-juniper woodland; 1,500-2,250 

m

May-Jul No potential, outside 

range of species

Triple-ribbed milk-vetch

Astragalus tricarinatus

E/–/1B.2/–/W Riverside and San Bernardino 

Counties, near Whitewater and 

Morongo Valley

On sandy or gravelly soils in alluvial

deposits along desert washes in 

Joshua tree woodland and Sonoran 

desert scrub; 450-1,190 meters 

Feb-May No potential, outside 

range of species

Scaly cloak fern 

Astrolepis cochisensis 

ssp. cochisensis

–/–/2.3/–/NE Desert mountains with reported 

occurrences in San Bernardino

County; Arizona, Baja California, 

New Mexico

Carbonate soils in pinyon-juniper 

woodland, Joshua tree woodland; 900–

1,800 meters 

Apr–Oct Potential, suitable 

habitat present.

Ayenia

Ayenia compacta

–/–/2.3–/NE Eastern desert mountains, 

Providence mountains, western 

and central Sonoran Desert, Eagle 

Mountains, in Riverside, San 

Bernardino, and San Diego 

Counties; Arizona, Baja California, 

Sonora (Mexico)

In sandy, gravelly desert washes and 

dry rocky canyons in creosote bush 

scrub, Mojavean and Sonoran desert 

scrub; 150-1095 meters

Mar-Apr Potential, suitable 

habitat present.

Fremont barberry

Berberis fremontii

–/–/3/–/NE Eastern and southern Mojave 

desert, Peninsular ranges in San 

Bernardino and San Diego 

Counties; Arizona, Nevada, Baja 

California, Sonora (Mexico); and 

elsewhere

Rocky areas in chaparral, Joshua tree 

woodland, and pinyon-juniper 

woodland; 840-1,850 meters

Apr-Jun Potential, suitable 

habitat present.

King’s eyelash grass 

Blepharidachne kingii

–/–/2.3/–/NE East of Sierra Nevada with 

occurrences in Inyo and Mono 

Counties; also Nevada and 

elsewhere

Great Basin scrub usually on carbonate 

substrates; 1,065-2,135 m

May No potential, outside 

range of species, no 

suitable habitat 

present.

Red grama

Bouteloua trifida

–/–/2.3/–/NE Eastern Desert mountains; Utah, 

Texas

Carbonate or rocky soils in Mojavean 

desert scrub; 700–2,000 meters

May–Sep Potential, suitable 

habitat present.

Alkali mariposa lily

Calochortus striatus

–/–/1B.2/–/W Western Mojave Desert, Kern, Los 

Angeles, San Bernardino, and 

Tulare Counties; Nevada

Alkaline mesic soils in chaparral, 

chenopod scrub, Mohavean desert 

scrub; 70-1,595 meters

Apr-Jun Potential, suitable 

habitat present.

F-Q-4
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Booth’s eveningprimrose

Camissonia boothii ssp. 

boothii

–/–/2.3/–/– East of Sierra Nevada, Inyo, Mono, 

and San Bernardino Counties, 

Arizona, Nevada

Joshua tree woodland and pinyonjuniper woodland; 900 - 2400 metersApr-May Potential, suitable 

habitat present; known 

to occur close to study 

area.

Crucifixion thorn

Castela emoryi

–/–/2.3/–/NE, W Desert Province Gravelly soils in Sonoran desert scrub, 

playas, Mojavean desert scrub; 90–670 

meters

Jun–Jul 

(uncommonly

in Apr)

Potential, suitable 

habitat present; known 

to occur close to study 

area.

Jaeger’s caulostramina 

Caulostramina jaegeri

–/–/1B.2/S/NE Inyo mountains, Inyo County Rocky or carbonate soils in Great Basin 

scrub, pinyon-juniper woodland, and 

subalpine coniferous forest; 2,135-

2,800 meters

May-Jul No potential, outside 

range of species, no 

suitable habitat 

present.

Wooton’s lace fern 

Cheilanthes wootonii

–/–/2.3/–/NE East of Sierra Nevada, desert 

mountains in Inyo and San 

Bernardino Counties; Arizona, Baja 

California, New Mexico, Nevada, 

Sonora (Mexico), Utah

Rocky places in Joshua tree woodland, 

pinyon-juniper woodland; 1,600-1,900 

meters

May-Oct No potential, no 

suitable habitat 

present.

Desert bird’s-beak 

Cordylanthus eremicus 

ssp. eremicus

–/–/4.3/–/NE Northern desert mountains, Inyo 

and San Bernardino Counties

Joshua tree woodland, Mohavean 

desert scrub, pinyon-juniper woodland 

on rocky substrate; 1000 - 3000 meters

Aug-Oct Potential, suitable 

habitat present.

Purple bird’s-beak 

Cordylanthus parviflorus

–/–/2.3/–/NE Eastern desert mountains, New 

York mountains, Providence 

mountains, San Bernardino 

County; Arizona, Idaho, Nevada, 

Utah

Joshua tree woodland, Mohavean 

desert scrub, pinyon-juniper woodland; 

700 - 2200 meters

Aug-Oct Potential, suitable 

habitat present.

Tecopa bird’s-beak

Cordylanthus 

tecopensis

–/–/1B.2/–/NE Southeastern Sierra Nevada 

range, northern Mojave Desert, 

Inyo and San Bernardino Counties; 

Nevada

Alkaline meadows, flats, saltbush 

scrub, and Mohavean desert scrub, 

200-3,000'

Jul-Oct No potential, outside 

range of species.

Desert pincushion

Coryphantha chlorantha

–/–/2.2/–/– Northeastern San Bernardino 

County

Carbonate, gravelly, or rocky soils in 

Joshua tree woodland, Mojavean 

desert scrub, or pinyon-juniper 

woodland; 45-1525 meters

Apr-Sep Potential, suitable 

habitat present.

F-Q-5
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Viviparous foxtail cactus

Coryphantha vivipara 

var. rosea

–/–/2.2/–/– Desert mountains in northeastern 

San Bernardino County; southern 

Nevada, northwestern Arizona

Carbonate soils in Mojavean desert 

scrub and pinyon-juniper woodland; 

1,250–2,700 meters

May–Jun Potential, suitable 

habitat present.

Clokey’s cryptantha 

Cryptantha clokeyi

–/–/1B.1/–/– North of Barstow, San Bernardino 

County, last seen 1935

Mohavean desert scrub on sandy or 

gravelly soils; 800-1280 meters

Apr Potential but unlikely, 

suitable habitat 

present.

Desert cymopterus 

Cymopterus deserticola

–/–/1B.2/–/W Historically known from Kern, Los 

Angeles and San Bernardino 

Counties, currently known from 

Edwards Air Force Base

Joshua tree woodland, Mohavean 

desert scrub on fine to coarse, loose, 

sandy soil of flats in old dune areas 

with well-drained sand; 630-1500

meters

Mar-May No potential, outside 

current range of 

species.

Gilman’s cymopterus 

Cymopterus gilmanii

–/–/2.3/–/NE Inyo, and San Bernardino 

Counties; Nevada

Mohavean desert scrub, often on 

carbonate rock; 915-2000 meters

Apr-May Potential, suitable 

habitat present.

Ripley’s cymopterus

Cymopterus ripleyi var. 

saniculoides

–/–/1B.2/–/NE Inyo; Nevada Joshua tree woodland, Mohavean 

desert scrub on sandy, carbonate soils

Apr-Jun No potential, outside 

range of species.

July gold

Dedeckera eurekensis

–/R/1B.3/–/NE Inyo and Mono Counties Mohavean desert scrub on carbonate 

soils

Jun-Aug No potential, outside 

range of species.

Panamint dudleya

Dudleya saxosa ssp. 

saxosa

–/–/1B.3/–/NE Inyo, Riverside, and San 

Bernardino Counties

Mohavean desert scrub, pinyon-juniper 

woodland on granitic or carbonate 

substrates; 960-2200 meters; 

Apr-Sep No potential, outside 

range of species.

Howe’s hedgehog 

cactus 

Echinocereus 

engelmannii var. howei

–/–/1B.1/S/NE San Bernardino County Mohavean desert scrub; 430-775 

meters

Apr-May Potential, suitable 

habitat present.

Panamint daisy 

Enceliopsis covillei

–/–/1B.2/S/NE Inyo County Subalkaline soils in Mohavean desert 

scrub 

Mar-Jun No potential, outside 

range of species.

F-Q-6
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Nine-awned pappus 

grass

Enneapogon desvauxii

–/–/2.3/–/NE Eastern Mojave desert; Texas, 

Colorado, northern Mexico

Rocky or carbonate soils in pinyonjuniper woodland; 1,275–1,825 metersAug-Sep No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Gilman’s goldenbush 

Ericameria gilmanii

–/–/1B.3/NE Inyo and Kern Counties Subalpine coniferous forest, upper 

montane coniferous forest on 

carbonate or granitic, rocky substrates; 

2100-3400 meters

Aug-Sep No potential, outside 

range of species, no 

suitable habitat 

present.

Hall’s daisy

Erigeron aequifolius

–/–/1B.3/–/W Fresno, Kern, and Tulare Counties On rocky, granitic substrates in 

boadleaved upland forest, lower and 

upper montane coniferous forest, 

pinyon-juniper woodland; 1500-2400 

meters

Jul-Aug No potential, outside 

range of species, no 

suitable habitat 

present.

Parish’s daisy

Erigeron parishii

T/–/1B.1/–/W Riverside and San Bernardino 

Counties

Mohavean desert scrub, pinyon-juniper 

woodland, usually on carbonate 

substrates; 800-2000 meters

May-Jun Potential, suitable 

habitat present.

Limestone daisy 

Erigeron uncialis var. 

uncialis

–/–/1B.2/–/– Inyo and San Bernardino Counties, 

Nevada

Great Basin scrub, subalpine 

coniferous forest on carbonate 

substrates; 1900-2900 meters

Jun-Jul No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Utah daisy

Erigeron utahensis

–/–/2.3/–/– Eastern Desert mountains; 

Colorado, Arizona

Carbonate soils in pinyon-juniper 

woodland; 1,500–2,320 meters

May–Jun No potential, no 

suitable habitat 

present.

Narrow-leaved yerba 

santa

Eriodictyon

angustifolium

–/–/2.3/–/– Eastern Desert mountains (New 

York and Granite mountains)

Pinyon-juniper woodland; 1,500–1,900 

meters

May–Aug No potential, no 

suitable habitat 

present.

Forked buckwheat

Eriogonum bifurcatum

–/–/1B.2/–/NE Inyo and San Bernardino Counties; 

Nevada

Sandy soils in chenopod scrub; 700-

810 meters

Apr-Jun Potential, suitable 

habitat present.

Reveal’s buckwheat

Eriogonum contiguum

–/–/2.3/–/NE Inyo and San Bernardino Counties; 

Nevada

Sandy soils in Mohavean desert scrub; 

30-1320 meters

Feb-Jun Potential, suitable 

habitat present.

F-Q-7
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Wildrose Canyon 

buckwheat

Eriogonum eremicola

–/–/1B.3/S/NE Inyo County On sandy or gravelly substrate in 

pinyon-juniper woodland, upper 

montane coniferous forest; 2200-3100 

meters

Jun-Sep No potential, no 

suitable habitat 

present.

Thorne's buckwheat

Eriogonum ericifolium 

var. thornei

–/E/1B.2/–/NE Eastern Desert mountains (New 

York mountains)

Gravelly soils in pinyon-juniper 

woodland; 1,800–1,830 meters

Jul–Aug No potential, no 

suitable habitat 

present.

Kern buckwheat

Eriogonum kennedyi 

var. pinicola

–/–/1B.1/–/W Southeastern Kern County On clay soils in chaparral, pinyonjuniper woodland; 1340-1950 metersMay-Jun No potential, outside 

range of species and 

no suitable habitat 

present.

Jointed buckwheat 

Eriogonum intrafractum

–/–/1B.3/–/NE Inyo County On carbonate substrates in Mohavean 

desert scrub; 610-1950 meters

May-Oct No potential, outside 

range of species

Panamint Mountains 

Buckwheat 

Eriogonum microthecum 

var. panamintense

–/–/1B.3/S/NE Inyo County Rocky areas in pinyon-juniper 

woodland; 1890-3250 meters

Jun-Oct No potential, outside 

range of species and 

no suitable habitat 

present.

Cushenbury buckwheat

Eriogonum ovalifolium 

var. vineum

E/–/1B.1/–/W San Bernardino County On carbonate substrates in Joshua tree 

woodland, Mohavean desert scrub, 

pinyon-juniper woodland; 1400-2440 

meters

May-Aug No potential, outside 

range of species.

Juniper buckwheat

Eriogonum umbellatum 

var. juniporinum

–/–/2.3/–/– Eastern Desert mountains in 

eastern San Bernardino County

Mojavean desert scrub, pinyon-juniper 

woodland; 1,300–2,500 meters

Jul–Oct Potential, suitable 

habitat present.

Hairy erioneuron

Erioneuron pilosum

–/–/2.3/–/– East of Sierra Nevada, eastern 

Desert mountains

Rocky, sometimes carbonate soils in 

pinyon-juniper woodland; 1,500–2,010 

meters

May–Jun No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Barstow woolly 

sunflower

Eriophyllum mohavense

–/–/1B.2/–/W Central Mojave desert in western 

and central San Bernardino County

Chenopod scrub, Mojavean desert 

scrub, playas; 500–960 meters

Apr–May Potential, suitable 

habitat present; known 

to occur close to study 

area west of Barstow.

F-Q-8
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Red Rock poppy

Eschscholzia minutiflora 

ssp. twisselmannii

–/–/1B.2/–/W Kern County Volcanic tuff in Mohavean desert scrub; 

680-1230 meters

Mar-May No potential, outside 

range of species and 

no suitable habitat 

present.

Kingston Mtns. 

Bedstraw

Galium hilendiae ssp. 

kingstonense

–/–/1B.3/S/NE San Bernardino County; Nevada Rocky areas in lower montane 

coniferous forest and pinyon-juniper 

woodland; 1200-2100 meters

Jun No potential, no 

suitable habitat 

present.

Wright’s bedstraw

Galium wrightii

–/–/2.3/–/– San Bernardino County; Arizona, 

Baja California, New Mexico, 

Texas, Sonora Mexico

Rocky areas in lower montane 

coniferous forest, pinyon-juniper 

woodland, on carbonate substrate; 

1600-2000 meters

Jun-Oct No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Little San Bernardino 

Mtns. gilia

Gilia maculata (syn. 

Linanthus maculatus)

–/–/1B.2/–/W Riverside and San Bernardino 

Counties, near Joshua Tree 

National Monument

Desert dunes, Joshua tree woodland, 

creosote bush scrub, in areas of 

braided wash; 195-2075 meters

Apr-May Potential but unlikely, 

suitable habitat 

present.

Golden carpet

Gilmania luteola

–/–/1B.3/–/NE Inyo County Alkaline barrens in chenopod scrub Mar-Apr No potential, outside 

range of species.

Pungent glossopetalon 

Glossopetalon pungens

–/–/1B.2/S/NE San Bernardino County; Nevada Carbonate soils in chaparral, pinyonjuniper woodland; 1675-2000 metersMay-Jun No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Ash Meadows gumplant 

Grindelia fraxinopratensis

T/–/1B.2/–/NE Inyo County: known from two 

occurrences in Carson Slough, 

Amargosa Desert; Nevada

Meadows in moist clay soils; 635-700 

meters

Jun-Oct No potential, outside 

range of species.

Red Rock tarplant

Hemizonia arida (syn. 

Deinandra arida)

–/R/1B.2/–/W Kern County Mohavean desert scrub on clay soils; 

300-950 meters

Apr-Nov No potential, outside 

range of species.

Mohave tarplant 

Hemizonia mohavensis

(syn. Deinandra 

mohavensis)

–/E/1B.3/–/W Riverside and San Bernardino 

Counties

Riparian scrub, Mojave desert scrub, 

and Joshua tree woodland, on low 

sand bars in river bed; 640-1600 

meters

Jul-Oct Potential but unlikely, 

suitable habitat 

present.

F-Q-9
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Inyo hulsea

Hulsea vestita ssp. 

inyoensis

–/–/2.2/S/NE, W Inyo and Mono Counties; Nevada Great Basin scrub, pinyon-juniper 

woodland on rocky substrate; 2835-

3900 meters

Apr-Jun No potential, outside 

range of species and 

no suitable habitat 

present.

Yellow ivesia

Ivesia arizonica var. 

arizonica

–/–/3/– /NE Inyo County; Arizona, Nevada, 

Utah

Rocky areas in pinyon-juniper 

woodland, subalpine and upper 

montane coniferous forest; 1200-3100 

meters

May-Aug No potential, outside 

range of species and 

no suitable habitat 

present.

Jaeger’s ivesia 

Ivesia jaegeri

–/–/1B.3/S/NE Clark Mountains, San Bernardino 

County; Nevada

Pinyon-juniper woodland, upper 

montane coniferous forest on 

carbonate, rocky substrates; 1830-

3600 meters

Jun-Jul No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Kingston Mtns. ivesia 

Ivesia patellifera

–/–/1B.3/S/NE San Bernardino County Pinyon-juniper woodland on granitic, 

rocky substrate; 1400-2100 meters

Jun-Oct No potential, no 

suitable habitat 

present.

Knotted rush 

Juncus nodosus

–/–/2.3/–/– Inyo, and possibly Tulare Counties Moist meadows and lake margins; 13-

1980 meters

Jul-Sep No potential, outside 

range of species

Hillside wheat grass

Leymus salinus ssp. 

mojavensis

–/–/2.3/–/– Desert mountains; Idaho, Colorado Rocky soils in pinyon-juniper woodland; 

1,350–2,135 meters

May–Jun No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Sand linanthus 

Linanthus arenicola

–/–/–/–/NE, W Inyo and San Bernardino Counties; 

Nevada

Joshua tree woodland, Mohavean 

desert scrub, and desert dunes, on 

sandy soils 366—1372 meters

Mar-Apr Potential, suitable 

habitat present.

Plains stoneweed

Lithospermum incisum

–/–/2.3/–/– Desert mountains in Keystone 

Canyon, New York mountains, San 

Bernardino County; Nevada, 

Montana, British Columbia

Pinyon-juniper woodland; 1,650–1,720 

meters

May No potential, no 

suitable habitat 

present.

Sagebrush loeflingia

Loeflingia squarrosa

var. artemisiarum

–/–/2.2/S/W Inyo, Kern, Lassen, and Los 

Angeles counties; Nevada, 

Oregon, Wyoming

Great Basin scrub and Sonoran desert 

scrub on sandy flats and dunes; 700-

1615 meters

Apr-May Potential, suitable 

habitat present.

F-Q-10
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Owens Peak lomatium

Lomatium shevockii

–/–/1B.3/–/W Kern County: known from two 

occurrences in Owens Peak and 

Mt. Jenkins area

Rocky areas in lower and upper 

montane coniferous forest; 1770-2200 

meters

Apr-May No potential, outside 

range of species and 

no suitable habitat 

present.

Scrub lotus

Lotus argyraeus var. 

multicaulis

–/–/1B.3/–/– Desert mountains in the New York 

mountains

Granitic soils in pinyon-juniper 

woodland; 1,200–1,500 meters

Apr–Jun No potential, no 

suitable habitat 

present.

Providence Mtns. lotus 

Lotus argyraeus var. 

notitius

–/–/1B.3/–/NE San Bernardino County: one 

occurrence in the Providence Mtns.

Pinyon-juniper woodland; 1200-2000 

meters

May-Aug No potential, outside 

range of species and 

no suitable habitat 

present.

Panamint Mountains 

lupine 

Lupinus magnificus var. 

magnificus

–/–/1B.2/S/NE Inyo County Great Basin scrub, Mohavean desert 

scrub, upper montane coniferous 

forest; 1000-2285 meters

Apr-Jun No potential, outside 

range of species

Wolftail 

Lycurus phleoides var. 

phleoides

–/–/2.2/–/NE San Bernardino County: known in 

California from occurrences in the 

New York Mountains; Arizona

Joshua tree woodland, pinyon-juniper 

woodland; 500 meters

Aug-Sep Potential but unlikely, 

suitable habitat 

present.

Spearleaf 

Matelea parvifolia

–/–/2.3/–/NE Sonoran desert, Riverside, San 

Bernardino, and San Diego 

Counties; Arizona, Baja California, 

Nevada, Texas

Dry rocky ledges and slopes in 

creosote bush scrub; 440-1095 meters

Mar-May Potential but unlikely, 

suitable habitat 

present.

Violet twining 

snapdragon 

Maurandya 

antirrhiniflora ssp. 

antirrhiniflora

–/–/2.3/–/NE San Bernardino County; Arizona, 

Sonora (Mexico), Texas

Joshua tree woodland, Mohavean 

desert scrub, on carbonate soils; 760-

1525 meters

Apr-May Potential, suitable 

habitat present.

Rock lady 

Maurandya petrophila

(syn. Holmgrenanthe 

petrophila)

–/R/1B.2/–/NE Inyo County: Titus and Fall 

canyons

Mohavean desert scrub on rocky 

carbonate soils; 515-1675 meters

Apr-Jun No potential, outside 

range of species.

Creamy blazing star

Mentzelia tridentata

–/–/1B.3/–/– Central Mojave desert Mojavean desert scrub; 700–1,160 

meters

Mar–May Potential, suitable 

habitat present, known 

to occur close to study 

area.

F-Q-11
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Utah monkeyflower 

Mimulus glabratus ssp. 

utahensis

–/–/2.1/–/NE Mono and Inyo Counties; Nevada Meadows, pinyon-juniper woodland; 

610-2000 meters

Apr No potential, no 

suitable habitat 

present.

Mojave monkeyflower

Mimulus mohavensis

–/–/1B.2/–/W Mojave desert near Barstow, San 

Bernardino County

Sandy or gravelly washes in Joshua 

tree woodland, Mojavean desert scrub; 

600–1,200 meters

Apr–Jun Potential, suitable 

habitat present; known 

to occur close to study 

area.

Kelso Creek 

monkeyflower

Mimulus shevockii

–/–/1B.2/–/W Kern County Joshua tree woodland, pinyon-juniper 

woodland, on sandy, granitic 

substrates; 800-1340 meters

Mar-May No potential, outside 

known range of 

species.

Sweet-smelling 

monardella 

Monardella beneolens

–/–/1B.3/S/W Inyo, Kern, and Tulare Counties: 

known from few occurrences on 

the eastern Sierran crest

Granitic substrates in alpine boulder 

and rock field, subalpine and upper 

montane coniferous forest; 2500-3500 

meters 

Jul-Sep No potential, outside 

range of species and 

no suitable habitat 

present.

Robison’s Monardella

Monardella robisonii

–/–/1B.3/S/W Riverside and San Bernardino 

Counties

Pinyon-juniper woodland; 610-1500 

meters

Apr-Oct No potential, no 

suitable habitat 

present.

Appressed muhly 

Muhlenbergia appressa

–/–/2.2/–/NE San Bernardino County, San 

Clemente Island, Arizona; Baja 

California

Rocky areas in coastal scrub, 

Mohavean desert scrub, valley and 

foothill grassland; 20-1600 meters

Apr-May Potential, suitable 

habitat present.

Tough muhly

Muhlenbergia arsenei

–/–/2.3/–/– Desert mountains in the Clark 

mountains; Utah, New Mexico, 

Baja California

Rocky or carbonate soils in pinyonjuniper woodland; 1,400–1,860 metersAug–Oct No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Delicate muhly 

Muhlenbergia fragilis

–/–/2.3/–/NE San Bernardino County; Arizona, 

Baja California, New Mexico, 

Sonora (Mexico), Texas

Pinyon-juniper woodland on carbonate, 

gravelly substrates; 1600 meters

Oct No potential, no 

suitable habitat 

present.

Few-flowered muhly 

Muhlenbergia pauciflora

–/–/2/–/NE San Bernardino County; Arizona Rocky areas in pinyon-juniper 

woodland; 1755-1860 meters

Sep No potential, no 

suitable habitat 

present.

Few-flowered muhly

Muhlenbergia pauciflora

–/–/2/–/– Desert mountains in the New York 

mountains; Colorado, Texas, 

Mexico

Rocky soils in pinyon-juniper woodland; 

1,755–1,860 meters

Sep–Oct No potential, no 

suitable habitat 

present.

F-Q-12
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

False buffalo-grass 

Munroa squarrosa

–/–/2.2/–/NE San Bernardino County; Arizona, 

Nevada,

Pinyon-juniper woodland on gravelly or 

rocky substrates; 1500-1800 meters

Oct No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Forked purple mat

Nama dichotomum var. 

dichotomum 

–/–/2.3/–/– Desert mountains in the New York 

mountains; Texas, Mexico

Granitic or carbonate soils in pinyonjuniper woodland; 1,900–2,200 metersSep–Oct No potential, no 

suitable habitat 

present.

Twisselmann’s 

nemacladus

Nemacladus 

twisselmannii

–/R/1B.2/–/NE Kern and Tulare Counties Upper montane coniferous forest on 

sandy or rocky, granitic substrates; 

2240-2450 meters

No potential, outside 

range of species and 

no suitable habitat 

present.

Amargosa nitrophila

Nitrophila mohavensis

E/E/1B.1/–/NE Inyo County: near Carson Slough 

in the Amargosa Desert; Nevada

Mesic playas, on clay soils; 425-750 

meters

May-Oct No potential, outside 

range of species.

Short-joint beavertail

Opuntia basilaris var.

brachyclada

–/–/1B.2/–/– Los Angeles and San Bernardino 

Counties

Chaparral, Joshua tree woodland, 

Mohavean desert scrub, pinyon-juniper 

woodland, desert washes, riparian 

woodland on dry slopes; 425-1800 

meters

Apr-Jun Potential, suitable 

habitat present.

Curved-spine beavertail

Opuntia curvospina

–/–/2.2/–/– Desert mountains in the New York 

mountains and eastern San 

Bernardino County

Chaparral, Mojavean desert scrub, 

pinyon-juniper woodland; 1,000–1,400 

meters

Apr–Jun Potential, suitable 

habitat present.

Beautiful cholla 

Opuntia pulchella

–/–/2.2/–/NE Inyo and Mono Counties; Arizona, 

Nevada, Utah

Desert dunes, Great Basin scrub, 

Mohavean desert scrub, on sandy 

soils; 1500-1980 meters

May-Jun No potential, outside 

range of species.

Cushenbury oxytheca 

Oxytheca parishii var. 

goodmaniana (syn. 

Acanthoscyphus)

E/–/1B.1 Cushenbury area in San 

Bernardino County

Pinyon-juniper woodland on sandy 

talus carbonate soils; 1300-2375 

meters

May-Sep No potential, no 

suitable habitat 

present.

Watson’s oxytheca 

Oxytheca watsonii

–/–/2.2/–/NE Inyo and Nevada Counties Joshua tree woodland, Mohavean 

desert scrub on sandy soils; 1200-2000 

meters

May-Jul No potential, outside 

range of species.

F-Q-13
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Cliff brake

Pellaea truncata

–/–/2.3/–/– Eastern Desert mountains in the 

New York and Providence 

mountains

Volcanic, granitic, or rocky soils in 

pinyon-juniper woodland; 1,200–2,150 

meters

Apr–Jun No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

White-margined 

beardtongue

Penstemon 

albomarginatus

–/–/1B.2/–/W San Bernardino County; Arizona, 

Nevada

Stabilized desert dunes, Mohavean 

desert scrub, on sandy soils; 640-1065 

meters

Mar-May Potential, suitable 

habitat present.

Rosy two-toned 

beardtongue

Penstemon bicolor ssp. 

roseus

–/–/2.3/–/– Northeastern San Bernardino

County

Joshua tree woodland, Mohavean 

desert scrub, pinyon-juniper woodland, 

on gravelly, rocky substrates; 700-1500 

meters

May Potential, suitable 

habitat present.

Limestone beardtongue 

Penstemon calcareus

–/–/1B.3/–/NE Inyo and San Bernardino Counties; 

Nevada

Joshua tree woodland, Mohavean 

desert scrub, pinyon-juniper woodland, 

on carbonate, rocky substrates; 1065-

2040 meters

Apr-May Potential, suitable 

habitat present.

Death Valley 

beardtongue 

Penstemon fruticiformis 

var. amargosae

–/–/1B.3/S/NE Inyo and San Bernardino Counties; 

Nevada

Mohavean desert scrub; 850-1400 

meters

Apr-Jun Potential, suitable 

habitat present.

Stephens’s beardtongue 

Penstemon stephensii

–/–/1B.3/S/NE Inyo and San Bernardino Counties Mohavean desert scrub, pinyon-juniper 

woodland, on rocky carbonate 

substrates; 60-1850 meters

Apr-Jun Potential, suitable 

habitat present.

Thompson's 

beardtongue

Penstemon 

thompsoniae

–/–/2.3/–/– Eastern Desert mountains in the 

New York and Clark mountains; 

Utah, Arizona

Gravelly, carbonate soils in pinyonjuniper woodland; 1,500–2,700 metersMay–Jun No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Utah beardtongue

Penstemon utahensis

–/–/2.3/–/– Eastern Desert mountains in the 

New York and Kingston mountains; 

Utah, Arizona

Rocky soils in chenopod scrub, Great 

Basin scrub, Mojavean desert scrub, 

pinyon-juniper woodland; 1,065–2,500 

meters

Apr–May Potential, suitable 

habitat present.

F-Q-14
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Inyo rock daisy 

Perityle inyoensis

–/–/1B.2/S/NE Inyo County: southern Inyo Mtns. Carbonate rocky areas in pinyonjuniper woodland, Great Basin scrub; 

1800-2710 meters

Jun-Aug No potential, outside 

range of species, no 

suitable habitat 

present.

Hanaupah rock daisy 

Perityle villosa

–/–/1B.3/S/NE Inyo County: endemic to mountains

of Death Valley National Park

Carbonate rocky areas in pinyonjuniper woodland, Great Basin scrub; 

1700-2600 meters

Jun No potential, outside 

range of species, no 

suitable habitat 

present.

Death Valley 

sandpaper-plant 

Petalonyx thurberi ssp. 

gilmanii

–/–/1B.3/S/NE Inyo County Desert dunes, Mohavean desert scrub; 

260-1445 meters

May-Sep No potential, outside 

range of species.

Saline Valley phacelia 

Phacelia amabilis

–/–/3.3–/NE Inyo County Riparian scrub, subalpine coniferous 

forest, in gravelly areas; 500-700 

meters

Apr-May No potential, outside 

range of species.

Aven Nelson's phacelia

Phacelia anelsonii

–/–/2.3/–/– Eastern Desert mountains in the 

New York mountains; Utah

Carbonate, sandy, or gravelly soils in 

Joshua tree woodland, pinyon-juniper 

woodland; 1,200–1,500 meters

Apr–May Potential, suitable 

habitat present; known 

to occur near the study 

area at Mountain Pass.

Sky-blue phacelia

Phacelia coerulea

–/–/2.3/–/– Eastern Mojave desert; Utah, 

Texas, Mexico

Mojavean desert scrub, pinyon-juniper 

woodland; 1,400–2,000 meters

Apr–May Potential, suitable 

habitat present.

Death Valley roundleaved phacelia 

Phacelia mustelina

–/–/1B.3/S/NE/ Desert mountains, Inyo and San 

Bernardino Counties; Nevada

In crevices on the face of limestone 

cliffs, volcanic outcrops, or gravel talus 

in Mohavean desert scrub and pinyonjuniper woodland; 730-2620 meters

May-Jul Potential but unlikely, 

suitable habitat 

present.

Charlotte’s Phacelia

Phacelia nashiana

–/–/1B.2/–/– Inyo, Kern, and Tulare Counties Joshua tree woodland, Mohavean 

desert scrub, pinyon-juniper woodland 

on granitic sandy or rocky areas on 

steep slopes or flats; 600-2200 meters

Mar-Jun No potential, outside 

range of species.

Nine Mile Canyon 

Phacelia

Phacelia novenmillensis

–/–/1B.2/–/– Inyo, Kern, and Tulare Counties Broadleaved upland forest, cismontane 

woodland, pinyon-juniper woodland, 

upper montane coniferous forest, on 

sandy or gravelly soils; 1645-2640 

meters

May-Jun No potential, outside 

range of species, no 

suitable habitat 

present.

F-Q-15
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Parish's phacelia

Phacelia parishii

–/–/1B.1/–/W Western Mojave desert in 

northwestern San Bernardino

County; Nevada

Clay or alkaline soils in playas, 

Mojavean desert scrub; 540–1,200 

meters

Apr–Jul Potential, suitable 

habitat present; known 

to occur near study 

area at Yermo.

Jaeger’s phacelia

Phacelia perityloides 

var. jaegeri

–/–/1B.3/–/– Northeastern San Bernardino 

County

Carbonate soils in pinyon-juniper 

woodland; 1,830–2,345 meters

May-Jul No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Goodding’s phacelia 

Phacelia pulchella var.

gooddingii

–/–/2.3/–/NE Inyo County; Arizona, Nevada, 

Utah

Mohavean desert scrub on clay, often 

alkaline soils; 800-1000 meters

Apr-Jun Potential, suitable 

habitat present.

Chambers's physaria

Physaria chambersii

–/–/2.3/–/– Northern desert mountains in the 

Clark and Grapevine mountains

Carbonate or rocky soils in pinyonjuniper woodland; 1,500–2,590 metersApr–May No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Two-needle pinyon pine 

Pinus edulis

–/–/3.3/–/NE San Bernardino County; eastern 

Nevada, Arizona

Lower montane coniferous forest, 

pinyon-juniper woodland; 1300-2700 

meters

No potential, no 

suitable habitat 

present.

Small-flowered rice 

grass 

Piptatherum 

micranthum

–/–/2.3/–/NE Inyo, Mono, and San Bernardino 

Counties, Idaho

Pinyon-juniper woodland, on gravelly, 

carbonate substrates; 700-2950 meters

Jun-Sep No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Parish's popcorn-flower

Plagiobothrys parishii

–/–/1B.1/–/– East of Sierra Nevada, Mojave 

desert: known from two 

occurrences at Rabbit Springs in 

San Bernardino Co. and north of 

Cartago in Inyo Co.

Alkaline or mesic areas in Great Basin 

scrub or Joshua tree woodland; 750–

1,400 meters

Mar-Jun 

(uncommonly

until Nov

Potential but unlikely, 

suitable habitat 

present.

Desert popcorn-flower 

Plagiobothrys salsus

–/–/2.2/–/NE Inyo and Modoc Counties; Nevada, 

Oregon

Alkaline playas; 700 meters May-Aug Potential but unlikely, 

suitable habitat 

present.

Thorny milkwort

Polygala acanthoclada

–/–/2.3/–/– Mojave Desert in Eagle and New 

York Mountains, Lucerne Valley; 

Utah, Arizona

Joshua tree woodland, chenopod 

scrub, pinyon-juniper woodland; 760–

2,285 meters

May–Aug Potential, suitable 

habitat present.

F-Q-16
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Notch-beaked milkwort 

Polygala heterorhyncha

–/–/2.3/–/NE Inyo County: Funeral Mtns.; 

Nevada

Mohavean desert scrub, on alkaline 

soils; 900-1600 meters

Apr-May No potential, outside 

range of species.

Narrow-leaved 

cottonwood

Populus angustifolia

–/–/2.2/–/NE Inyo and San Bernardino Counties; 

Arizona, Idaho, Nevada, Oregon

Riparian forest; 1200-1800 meters Mar-Apr Potential but unlikely, 

suitable habitat 

present.

Parish’s alkali-grass

Puccinellia parishii

–/–/1B.1/–/W Known only from Rabbit Springs, 

Kern Co; widely disjunct localities 

in California, Arizona, New Mexico

Alkaline springs and seeps; 700-1000 

meters

Apr-May No potential, no 

suitable habitat 

present.

Muir’s Raillardella

Raillardiopsis muirii

(syn. Carlquistia muirii)

–/–/1B.3/–/– Fresno, Kern, Monterey, and 

Tulare Counties

Montane chaparral, lower and upper 

montane coniferous forest; 1100-2500 

meters

Jul-Aug No potential, outside 

range of species and 

no suitable habitat 

present.

Abert’s sanvitalia 

Sanvitalia abertii

–/–/2.2/–/NE San Bernardino County; Arizona, 

Sonora (Mexico), Texas

Pinyon-juniper woodland on carbonate 

derived soils; 1570-1800 meters

Aug-Sep No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Many-flowered 

Schkuhria

Schkuhria multiflora var. 

multiflora

–/–/2.3/–/– Eastern Mojave desert; Texas, 

New Mexico

Sandy soils in pinyon-juniper woodland; 

1,500–1,700 meters

Sep–Oct No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

Burro grass

Scleropogon brevifolius

–/–/2.3/–/NE San Bernardino County; Arizona, 

Nevada

Mohavean desert scrub, in areas of 

decomposed granitic soils; 1585-1600 

meters

Oct Potential but unlikely -

occurs at higher 

elevations. 

Mojave fish-hook cactus

Sclerocactus 

polyancistrus

–/–/4.2/–/– Inyo, Kern, and San Bernardino 

Counties, Nevada

Joshua tree woodland, Mohavean 

desert scrub, usually on carbonate 

derived soils; 640-2320 meters

Apr-Jul Potential, suitable 

habitat present.

Southern skullcap

Scutellaria bolanderi

ssp. austromontana

–/–/1B.2/–/– San Bernardino Mountains, 

Peninsular Ranges, and adjacent 

Mojave desert in Riverside, San 

Bernardino*, and San Diego 

Counties

Along stream banks in oak or pine 

woodland and chaparral, on gravelly 

soils; 600-2000 meters

Jun-Aug No potential, no 

suitable habitat 

present; species occurs 

within ten miles.

F-Q-17
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

Desert wing-fruit 

Selinocarpus 

nevadensis

–/–/2.3/–/NE Inyo County: known from one 

occurrences in Kingston Range; 

Arizona, Nevada, Utah

Rocky areas in Joshua tree woodland, 

Mohavean desert scrub; 1160-1250 

meters

Jun-Sep No potential, outside 

range of species.

Rusby's desert mallow

Sphaeralcea rusbyi var. 

eremicola

–/–/1B.2/S/NE Death Valley region, eastern Inyo 

County, Clark Mountains, 

northeastern San Bernardino

County;

Mojavean desert scrub, Joshua tree 

woodland; 975–1,500 meters

May–Jun Potential, suitable

habitat present; known 

to occur close to study 

area.

Piute Mtns. jewel-flower

Streptanthus cordatus

var. piutensis

–/–/1B.2/ S/W Kern County Broadleaved upland forest, closedcone coniferous forest, and pinyonjuniper woodland along roadbanks and 

cliffs, on metamorphic red clay soils; 

1095-1735 meters

May-Jul No potential, outside 

range of species, no 

suitable habitat 

present.

San Bernardino aster

Symphotrichium 

defoliatum

–/–/1B.2/–/– Riverside, Orange, Los Angeles, 

San Diego, Kern, Ventura, and 

southeastern San Bernardino 

Counties

Wet areas within coastal scrub, 

cismontane woodland, lower montane 

coniferous forest, meadows, marshes, 

swamps, and valley/foothill grassland; 

2-2040 meters

Jul-Nov Potential but unlikely, 

suitable habitat 

present.

Holly-leaved 

tetracoccus

Tetracoccus ilicifolius

–/–/1B.3/–/NE Inyo County: Death Valley Rocky areas in Mohavean desert 

scrub, on carbonate derived soils; 600-

1830 meters

May-Jun No potential, outside 

range of species.

Dedecker’s Clover

Trifolium dedeckerae

(syn. T. macilentum var. 

dedeckerae)

–/–/1B.3/S/W Eastern Sierras in Tulare and Inyo 

Counties, the White Mountains in 

Inyo County, south to Spanish 

Needle area in Kern County

Rocky, gravelly slopes in variety of arid 

vegetation types including coniferous 

forest, pinyon-juniper woodland, and 

sagebrush scrub; 2100-3500 meters.

Jun-Jul No potential, outside 

range of species, no 

suitable habitat 

present.

Plummer's woodsia

Woodsia plummerae

–/–/2.2/–/NE Desert mountains; Texas, New 

Mexico

Granitic or rocky soils in pinyon-juniper 

woodland; 1,600–2,000 meters

May–Sep No potential, no 

suitable habitat 

present.

F-Q-18
Common Name 

Scientific Name

Federal/State/

CNPS/BLM/

HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study Area

a

Status explanations:

Federal

E = listed as endangered under the federal Endangered Species Act.

T = listed as threatened under the federal Endangered Species Act.

– = no listing.

California State

E = listed as endangered under the California Endangered Species Act.

– = no listing.

California Native Plant Society (CNPS)

1B = List 1B species: rare, threatened, or endangered in California and elsewhere.

2 = List 2 species: rare, threatened, or endangered in California but more common elsewhere

– = no listing.

BLM

S = plant species that are not on federal or state lists as endangered, threatened, candidate, or proposed, but are designated by the BLM State Director

for special management consideration

– = no listing.

HCP

W = species covered by the West Mojave Habitat Conservation Plan 

NE = species covered by the Northern and Eastern Mojave Plan.

– = no listing.

F-Q-19
Table 2. Special-status Plants with Potential to Occur in the Vicinity of the DesertXpress Project; Nevada Portion 

Common Name 

Scientific Name

Federal/State/

BLM/HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study 

Area

Rough angelica

Angelica scabrida

–/–/S/C Endemic to Spring Mountains Mixed conifer communities near springs, in 

moist, gravelly soils of washes, ephemeral 

streams, gullies, montane slopes, 

avalanche chutes, wash margins in riparian 

woodland and shrubland; 2,012–2,804 

meters 

Jun-Aug No potential, study 

area is outside the 

known range of 

species.

Menzies’ anacolia moss 

Anacolia menziesii

–/–/–/C Only Nevada occurrence found in Red 

Rock Canyon, Clark County.

A single location in pinyon-juniper and 

blackbrush habitat in the Spring Mountains 

at approximately 1600 meters.

Not 

applicable

No potential, study 

area is outside the 

known range of 

species.

Charleston pussytoes 

Antennaria soliceps

–/–/S/C Endemic to Spring Mountains Alpine and bristlecone pine habitat on 

gravelly, open ridge slopes; 2,652–3,536 

meters

Jul-Sep No potential, study 

area is outside the 

known range of 

species.

Sticky ringstem

Anulocaulis leisolenus

–/–/S/C Known primarily from Frenchman 

Mountain area east of Las Vegas and 

further east to Muddy Mountains and 

Gold Butte; Arizona, New Mexico, 

Texas

Mojave desert scrub and salt desert scrub, 

on gypsiferous soils on rolling hills and 

terraces.

Jun-Oct No potential, this 

species is known 

to occur north and 

east of Las Vegas 

on gypsiferous 

soils.

Las Vegas bear poppy

Arctomecon californica

–/FP/S/C Endemic to the eastern Mojave Desert 

in southeastern Nevada and 

northwestern Arizona. Majority of 

populations in Clark County, Nevada

Primarily within Mojave desert scrub and 

salt desert scrub habitats on gypsum 

outcrops

Feb-Jul Potential but 

unlikely to occur, 

species is known 

to occur on 

gypsiferous soils 

north and east of 

Las Vegas.

White bear poppy

Arctomecon merriamii

–/–/S/C Northeastern Mojave desert; southern 

Nevada

Rocky soils in chenopod scrub, Mojavean 

desert scrub; 490–1,800 meters

Apr-Jul Potential, suitable 

habitat present.

F-Q-20
Common Name 

Scientific Name

Federal/State/

BLM/HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study 

Area

Rosy king sandwort

Arenaria kingii ssp. rosea

–/–/–/C Endemic to Spring Mountains Dry, rocky hillsides in bristlecone pine, 

mixed conifer forest on limestone and 

carbonate-derived substrates; 1,798– 2,896 

meters

Jun-Aug No potential, study 

area is outside the 

known range of 

species.

Clokey eggvetch

Astragalus oophorus var.

clokeyanus

–/–/–/C Spring Mountains in Clark County, 

Nevada Test Site and Belted Range in 

Nye County

Pinyon-juniper and mixed conifer 

communities on moist to dry, often 

disturbed gravelly soils in openings of 

forests, shrublands, and woodlands.

May-Jun No potential, study 

area is outside the 

known range of 

species.

Clokey milkvetch

Astragalus aequalis

–/–/–/C Endemic to Spring Mountains Pinyon-juniper, mixed conifer, and 

sagebrush habitats on flat to gently sloping 

sites with dry, gravelly soils of alluvial fans; 

1,829–2,560 meters

May-Jun No potential, study 

area is outside the 

known range of 

species.

Threecorner milkvetch

Astragalus geyeri var.

triquetrus

–/–/–/C Endemic to southeastern Mojave 

Desert in Lincoln and Clark Counties in 

Nevada; Arizona

Mojave desert scrub communities; sandy 

soils formed from sedimentary formations 

adjacent to Lake Mead and its tributary 

valleys in Clark County, NV. Associated 

with Aztec sandstone outcrops

Feb-May No potential, 

species is known 

to occur on 

windblown sands 

deposits north of 

Las Vegas.

Mojave milk-vetch

Astragalus mohavensis 

var. mohavensis

–/–/–/– Occurs in Clark and Nye counties, 

Nevada.

Gravel soils on terraced hills and ledges, 

open slopes, and along washes in 

Mohavean desert scrub.

May Potential but 

unlikely to occur, 

suitable habitat 

present.

Spring Mountain milkvetch

Astragalus remotus

–/–/S/C Endemic to Spring Mountains Gravelly soils, rocky hillsides, and desert 

washes in pinyon-juniper, sagebrush, 

grassland, blackbrush, and Mojave desert 

scrub. 

Apr-May Potential, suitable 

habitat present.

Alkali mariposa lily

Calochortus striatus

–/–/S/C Western Mojave Desert, Kern, Los 

Angeles, San Bernardino, and Tulare 

Counties; Nevada

Alkaline mesic soils in chaparral, chenopod 

scrub, Mohavean desert scrub; 70-1,595 

meters

Apr-Jun Potential but 

unlikely to occur, 

suitable habitat 

present.

Clokey paintbrush

Castilleja martinii var.

clokeyi

–/–/–/C Inyo County; mountain ranges of 

southern Nevada: Sheep Range, 

Spring Mountains, and Quinn Canyon 

Range in Nye County 

Bristlecone pine and mixed conifer on dry 

gravelly slopes; 1,981–3,124 meters

May-Aug No potential, study 

area is outside the 

known range of 

species.

F-Q-21
Common Name 

Scientific Name

Federal/State/

BLM/HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study 

Area

Clokey thistle

Cirsium clokeyi

–/–/–/C Endemic to Spring Mountains Alpine, bristlecone pine, and mixed conifer 

communities on gravelly slopes, dry ridges, 

and around springs; 2,774–3,353 meters

Jun-Jul No potential, study 

area is outside the 

known range of 

species.

Un-named moss

Claopodium whippleanum

–/–/–/C Only Nevada occurrence found in Red 

Rock Canyon, Clark County.

Pinyon-juniper habitat at approximately 

1,600 meters.

Not 

applicable

No potential, study 

area is outside the 

known range of 

species.

Las Vegas catseye

Cryptantha insolita

–/FP/S/– Known only from the Las Vegas Valley 

and adjacent lower slopes of the 

Spring Mountains.

Alkaline clay flats and low hills in Mohavean 

desert scrub.

May Potential, suitable 

habitat present.

Un-named moss

Dicranoweisia crispula

–/–/–/C Southernmost population of a 

widespread western North American 

species; found in Lee Canyon in the 

Spring Mountains, Clark County.

Occurs on downed logs associated with 

mixed conifer and pinyon juniper.

Not 

applicable

No potential, no 

suitable habitat 

present.

Jaeger whitlowgrass

Draba jaegeri

–/–/S/C Endemic to Spring Mountains At or near the timberline in alpine and 

bristlecone pine communities in fell fields 

and talus rubble; 2,941–3,413 meters

Jun-Aug No potential, study 

area is outside the 

known range of 

species.

Charleston draba

Draba paucifructa

–/–/–/C Endemic to Spring Mountains At and above timberline in alpine and 

bristlecone pine communities in moist areas 

(e.g., seeps, late-lying snow drifts); 2,515–

3,475 meters

Jun-Jul No potential, study 

area is outside the 

known range of 

species.

Sheep fleabane

Erigeron ovinus

–/–/S/– Known from Mount Irish and the 

Sheep and Groom ranges, in Clark 

and Nye Counties, Nevada.

Crevices in carbonate cliffs and ridgeline 

outcrops in the pinyon-juniper and montane 

conifer habitats.

JuneAugustNo potential, study 

area is outside the 

known range of 

species.

Inch high fleabane

Erigeron uncialis ssp. 

conjugans

–/–/–/C Endemic to southern Nevada in the 

Spring Mountains and Sheep Range

Limestone cliffs (i.e., cracks in vertical 

faces) and boulders within bristlecone pine, 

mixed conifer, pinyon-juniper, and 

sagebrush communities; 2,194–3, 505 

meters

May-Jul No potential, study 

area is outside the

known range of 

species.

F-Q-22
Common Name 

Scientific Name

Federal/State/

BLM/HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study 

Area

Forked buckwheat

Eriogonum bifurcatum

–/–/S/C Inyo and San Bernardino Counties; 

Nevada

Sandy soils in chenopod scrub; 700-810 

meters

Aug-Sep Potential but 

unlikely to occur, 

species is not 

known to occur 

with the study 

area.

Las Vegas buckwheat

Eriognum corymbosum 

var. aureum

–/–/S/– Known occurrences in Clark County, 

Nevada.

On and near gypsum soils, often forming 

low mounds or outcrops in washes and 

drainages, or in areas of generally low 

relief; 579-1170 meters.

Sep-Nov Potential, the 

species and 

suitable habitat 

occur in the 

immediate project 

area.

Sticky buckwheat

Eriogonum viscidulum

–/–/S/C Endemic to the eastern Mojave Desert 

in Clark and Lincoln Counties, Nevada; 

Arizona

Loose, sandy soils in Mojavean desert 

scrub in low dunes, washes, beaches, and 

areas of aeolian accumulation; 457–762 

meters

Apr-Jun No potential, the 

species is known 

to occur on loose 

sand deposits 

northeast of Las 

Vegas.

Sticky greasebush

Glossopetalon clokeyi

–/–/–/C Endemic to Spring Mountains Cracks and crevices on northern side of 

vertical and near vertical limestone cliffs in 

mixed coniferous forest; 2,134–2,804 

meters

Jun-Sep No potential, study 

area is outside the 

known range of 

species.

Pungent glossopetalon 

Glossopetalon pungens

–/–/S/C San Bernardino County; Nevada Limestone soils in chaparral, pinyon-juniper 

woodland; 1675-2000 meters

Apr-Jul No potential, study 

area is outside the 

known elevation 

range of species.

Smooth pungent 

greasebush

Glossopetalon pungens

var. glabra

–/–/–/C Endemic to Mojave Desert mountains 

in San Bernardino County; Nevada

Pinyon-juniper and sagebrush communities 

on limestone cliffs and rocky slopes; 1,219–

1,981 meters

Apr-Jul No potential, study 

area is outside the 

known range of 

species.

Pungent dwarf greasbush

Glossopetalon pungens

var. pungens

–/–/–/C Endemic to southern Nevada in the 

Spring Mountains and Sheep Range

Pinyon-juniper and sagebrush communities 

on limestone cliffs and rocky slopes

Apr-Jul No potential, study 

area is outside the 

known range of 

species.

F-Q-23
Common Name 

Scientific Name

Federal/State/

BLM/HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study 

Area

Red rock canyon aster

Ionactis caelestis

–/–/S/C Endemic to Red Rock Canyon in Clark 

County, Nevada.

Open mixed conifer forest; occurs on rocky, 

sandstone outcrops within ponderosa pine -

potential habitat includes approximately 

6,400 acres of Red Rock escarpment in 

Aztec sandstone crevices.

Jun-Aug No potential, study 

area is outside the 

known range of 

species.

Hidden ivesia

Ivesia cryptocaulis

–/–/–/C Endemic to the Spring Mountains, 

found only on Charleston Peak 

ridgeline, Mummy Mountain.

Alpine at or just above tree line on talus 

and scree slopes, rocky ridge lines; 3600-

4000 meters

May-Aug No potential, study 

area is outside the 

known range of 

species.

Jaeger’s ivesia 

Ivesia jaegeri

–/–/–/C Endemic to Spring Mountains, 

Nevada, and Clark Mountains in San 

Bernardino, California.

Pinyon-juniper woodland, upper montane 

coniferous forest on carbonate, rocky 

substrates; 1830-3600 meters

Jun-Jul No potential, study 

area is outside the 

known range of 

species.

Hitchcock bladderpod

Lesquerella hitchcockii

–/–/–/C Charleston Peak area in Kyle and Lee 

Canyons; extends from Clark County 

north to central eastern Nevada in 

White Pine County.

Alpine, bristlecone pine, and mixed conifer 

communities; on flat or sloping ground, 

talus slopes, dry ridges, and rocky hillsides; 

2,730-3,800 meters

Jun-Aug No potential, study 

area is outside the 

known range of 

species.

Blue diamond cholla

Opuntia whipplei var. 

multigeniculata

–/–/–/C Endemic to the Blue Diamond Hills 

west of Las Vegas, Nevada.

Restricted to dry limestone hills, underlain 

by gypsum, occurring mostly on northfacing slopes and exposed ridges in 

Mohavean desert scrub.

May No potential, study 

area is outside the 

known range of 

species.

Charleston pinewood 

lousewort

Pedicularis semibarbata

var. charlestonensis

–/–/–/C Southern Nevada endemic, all of 

range within Clark County.

Mixed conifer forest and bristlecone pine 

communities; 2800 - 3,300 meters

May-Aug No potential, study 

area is outside the 

known range of 

species.

White-margined 

beardtongue

Penstemon 

albomarginatus

–/–/S/C San Bernardino County; Arizona, 

Nevada.

Stabilized desert dunes, Mohavean desert 

scrub, on sandy soils; 640-1065 meters

Mar-May Potential, suitable 

habitat present. 

This species is 

known to occur in 

the project vicinity 

between Jean and 

Primm, NV.

F-Q-24
Common Name 

Scientific Name

Federal/State/

BLM/HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study 

Area

Yellow twotone 

beardtongue beardtongue

Penstemon bicolor ssp. 

bicolor

–/–/S/– Known from Clark County, Nevada. Calcareous or carbonate soils in washes, 

roadsides, rock crevices, outcrops, in 

creosote-bursage, blackbrush, mixedshrub, and lower juniper habitats.

Apr-May Potential, suitable 

habitat present.

Rosy twotone 

beardtongue

Penstemon bicolor ssp. 

roseus

–/–/–/– Clark and Nye counties, Nevada; also 

in Arizona and California.

Rocky calcareous, granitic, or volcanic soils 

in washes, roadsides, rock crevices, in 

creosote-bursage, blackbrush, and mixedshrub habitats; 700-1500 meters

Mar-May Potential, species 

and suitable 

habitat present.

Charleston beardtongue

Penstemon leiophyllus

var. keckii

–/–/–/C Endemic to the Spring Mountains at 

high elevations, above and in upper 

Kyle and Lee Canyons

Bristlecone pine and mixed conifer forest 

communities, aspen on gravelly or rocky 

slopes, or open meadows on ledges and 

talus slopes; 2,300 - 3,700 meters.

Jun-Aug No potential, study 

area is outside the 

known range of 

species.

Jaeger beardtongue

Penstemon thompsoniae 

var. jaegeri

–/–/–/C Southern Nevada endemic, all of 

range in Clark county.

Mixed conifer forest and pinyon-juniper 

woodlands on gravelly limestone banks and 

hillsides; 2,100 - 3,100 meters.

May-Aug No potential, study 

area is outside the 

known range of 

species.

Parish's phacelia

Phacelia parishii

–/–/S/C Western Mojave desert in 

northwestern San Bernardino County; 

Nevada

Clay or alkaline soils in playas, Mohavean 

desert scrub; 540–1,200 meters

Apr–Jul Potential, suitable 

habitat present.

Clokey Mountain sage

Salvia dorrii var. clokeyi

–/–/S/C Southern Nevada endemic: Spring 

Mountains and Sheep Range in Clark 

County.

Bristlecone pine, mixed conifer, and pinyonjuniper communities typically on shallow 

gravelly soils derived from limestone, 

dolomites, and sandstone, along ridges and 

where bedrock outcrops occur; and in rocky 

slope drainages; 2,300 - 9,300 meters

Jun-Sep No potential, study 

area is outside the 

known range of 

species.

Clokey catchfly

Silene clokeyi

–/–/–/C Endemic to the Spring Mountains, 

known on Mummy Mountain and along 

the Charleston Peak ridge line.

Alpine and bristlecone pine communities on 

fell-fields, steep eastern drop-offs of high 

ridge lines, and gently sloping plateaus; 

3,800 - 3,800 meters.

Jul-Aug No potential, study 

area is outside the 

known range of 

species.

Charleston tansy

Sphaeromeria compacta

–/–/–/C Endemic to the Spring Mountains. 

Known on Mummy Mountain and 

along the Charleston Peak ridge line.

Alpine and bristlecone pine, on talus and 

scree slopes, rocky ridge lines and slopes, 

and rock outcrops; 3,600 - 4,000 meters.

Jul-Aug No potential, study 

area is outside the 

known range of 

species.

F-Q-25
Common Name 

Scientific Name

Federal/State/

BLM/HCPa

Geographic Distribution/Floristic 

Province Habitat Requirements 

Blooming 

Period

Potential for 

Occurrence in the 

Biological Study 

Area

Charleston kittentails

Synthyris ranunculina

–/–/–/C Endemic to the Spring Mountains. 

Known to occur in upper Kyle and Lee 

Canyons, from the vicinity of Mummy 

Mountain, and on the ridgeline in the 

vicinity of Griffith Peak.

Alpine, bristlecone pine, and mixed conifer 

forest in high elevation springs and seeps 

and permanently damp areas; 2,800 -

3,900 meters

Jun-Sep No potential, study 

area is outside the 

known range of 

species.

Un-named moss

Syntrichia princeps

–/–/–/C Common West Coast species with the 

only two Nevada collections from the 

Spring and Virgin Mountains, Clark 

County.

Occurs in the pinyon-juniper zone at 

approximately 1,600 meters.

Not 

applicable

No potential, 

suitable habitat is 

not present.

Charleston grounddaisy

Townsendia jonesii var. 

tumulosa

–/–/S/C Southern Nevada endemic in the 

Spring Mountains, Sheep Mountains, 

and Sunnyside, Nye County.

Bristlecone pine, mixed conifer, and pinyonjuniper communities on shallow gravelly 

soils along ridges, rocky outcrops, and 

slopes; 2,200 - 3,200 meters.

May-Aug No potential, study 

area is outside the 

known range of 

species.

Limestone violet

Viola purpurea var. 

charlestonensis

–/–/–/C Southwestern desert endemic, found 

primarily in the Sheep Mountains.

Mixed conifer forest and pinyon-juniper 

communities; 2,200 - 3,200 meters.

May-Jun No potential, study 

area is outside the 

known range of 

species.

a

Status explanations:

Federal

– = no listing.

Nevada State

FP = Fully protected by the state of Nevada

– = no listing.

BLM

S = plant species that are not on federal or state lists as endangered, threatened, candidate, or proposed, but are designated 

by the BLM State Director for special management consideration

– = no listing.

HCP

C = species listed as ―Covered‖ by the Clark County Multiple Species Habitat Conservation Plan 

– = no listing.

F-Q-26
Table 3. Special-status Wildlife Species with Potential to Occur in the Vicinity of the DesertXpress Project: California 

Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Invertebrates

Shoshone cave 

whip-scorpion

Hubbardia 

(Trithyreus) 

shoshonensis

--/--/S/NE Known only from Shoshone cave in the 

northern Mojave desert

Occurs in and around wood debris in the 

warmer, humid regions of Shoshone cave.

No potential. The 

project study area is 

outside of known 

range for this species.

Fish

Amargosa River 

pupfish

Cyprinodon 

nevadensis 

amargosae

--/SSC/S/NE Found only in the Amargosa river in Death 

Valley National Park, Inyo County.

Occurs in both pools and fast-moving areas 

of the river, with a fine silt, mud, and clay 

substrate. 

No potential. Suitable 

habitat does not occur 

in the project study 

area and is outside the 

known range of this 

species.

Saratoga springs 

pupfish

Cyprinodon 

nevadensis 

nevadensis

--/SSC/--/-- Found in three open water ponds fed by 

Saratoga springs near the southern boundary 

of Death Valley National Park, Inyo County.

Found in open water ponds surrounded by 

hydrophytic vegetation.

No potential. Suitable 

habitat does not occur 

in the project study 

area.

Shoshone pupfish

Cyprinodon 

nevadensis 

shoshone

--/SSC/--/NE Historically occurred in Shoshone spring and 

its outlet creek; its range is now restricted to a 

pond near the creek and occasionally in 

portions of the heavily modified outlet creek.

Open water pond surrounded by hydrophytic 

vegetation.

No potential. Suitable 

habitat does not occur 

in the project study 

area.

Mohave tui chub

Gila bicolor 

mohavensis

E/E/--/W Historically occurred in the Mojave River, 

natural populations found also in Soda Spring 

at the Desert Studies Center, near Baker, 

California. Has been introduced into Lark Seep 

at the China Lake Naval Air Weapons Center, 

Camp Cady, and at the California Desert 

Information Center in Barstow.

Found in deep pools and slough areas in the 

Mojave River, also in relatively deep ponds 

that allow fish access to cool water. Often 

found in association with aquatic ditchgrass 

(Ruppia maritima).

Potential. Suitable 

habitat occurs in the 

Mojave River.

F-Q-27
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Arroyo chub

Gila orcutti

--/SSC/--/-- Although native to the Los Angeles, San 

Gabriel, San Luis Rey, Santa Ana, and Santa 

Margarita rivers (as well as their tributaries), 

they have been successfully introduced into 

the Santa Ynez, Santa Maria, Cuyama, and 

Mojave river systems.

Habitat generalists but prefer sand or mud 

bottoms in cool, clear water with abundant 

vegetation.

Potential. Suitable 

habitat occurs in the 

Mojave River.

Amargosa Canyon 

Speckled Dace

Rhinichthys osculus

--/SSC/S/NE Found in the Armargosa river, Willow creek, 

and Willow reservoir in southern Inyo County.

Prefers relatively deep pools with slowmoving water.No potential. Suitable 

habitat does not occur 

in the project study 

area.

Amphibians

Inyo Mountains 

slender salamander

Batrachoseps 

campi

--/SSC/S/NE Inyo mountains, Inyo County, from around 

1,800-8,600 feet

Found in isolated spring and stream areas 

below the pinyon-juniper belt, under stones 

and in crevices near water, surrounding 

slopes are arid

No potential. Suitable 

habitat does not occur 

in the project study 

area.

Black toad

Bufo exsul

--/T, FP/--/NE Deep Springs Valley, between Inyo and White 

Mtns., Inyo County, at around 5,000 feet

Found in springs, water courses, wet 

meadows, and marshes of grass, sedge, 

dwarf bulrush and watercress. Highly aquatic 

but found up to 40 feet from nearest water.

No potential. Suitable 

habitat does not occur 

in the project study 

area.

California redlegged frog

Rana aurora 

draytoni

T/SSC/--/-- Found along the coast and coastal mountain 

ranges of California from Marin County to San 

Diego County and in the Sierra Nevada from 

Tehama County to Fresno County.

Permanent and semi permanent aquatic 

habitats, such as creeks and cold-water 

ponds, with emergent and submergent 

vegetation. May estivate in rodent burrows or 

cracks during dry periods.

No potential. Suitable 

habitat does not occur

in the project study 

area.

Reptiles

Southwestern pond 

turtle

Clemmys 

marmorata pallida

--/SSC/S/W Occurs along the central coast of California 

east to the Sierra Nevada and along the 

southern California coast inland to the Mojave 

and Sonora Deserts; range overlaps with that 

of the northwestern pond turtle throughout the 

Delta and in the Central Valley

Woodlands, grasslands, and open forests; 

aquatic habitats, such as ponds, marshes, or 

streams, with rocky or muddy bottoms and 

vegetation for cover and food

Potential. Suitable 

habitat occurs in the 

Mojave River.

F-Q-28
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Desert tortoise

Gopherus agassizii

T/T/--/W, NE Southern California deserts in Inyo, San 

Bernardino, Kern, Los Angeles, Riverside, San 

Diego, and Imperial Counties

Desert areas from 300 to 900 feet with sandy 

loam to gravelly soils for digging dens; favors 

creosote and cactus scrub habitats with high 

densities of annual blooms in spring for 

feeding

Potential. Suitable

habitat occurs 

throughout the project 

study area in native 

vegetation.

Panamint alligator 

lizard

Gerrhonotus 

(=Elgaria) 

panamintinus

--/SSC/S/W, NE Found in the Panamint Mountains, the White 

Mountains, the Inyo Mountains, the Nelson 

Mountains, and the Cosos Mountains of Inyo 

and Mono Counties

Inhabits desert riparian areas and rocky 

canyons near seeps or springs, generally in 

association with creosote, sagebrush, and 

pinyon-juniper habitats.

No potential. The 

project study area is 

outside the known 

range of this species.

Banded gila 

monster (population 

west of Colorado 

River)

Heloderma 

suspectum cinctum

--/SSC/S/W, NE Eastern San Bernardino and Riverside 

Counties

Rocky areas in association with desert scrub 

and semi-desert grassland; found from 0-

3600 feet.

Potential, suitable 

habitat occurs in the 

rocky habitats of 

Eastern San 

Bernardino County.

San Diego horned 

lizard

Phrynosoma 

coronatum blainvillii

--/SSC/S/W, NE Transverse and Peninsular Ranges from 

Ventura County through San Diego County

Occurs in a variety of habitats, from brushlands to coniferous forests; requires open 

areas for sunning

Potential. Suitable 

habitat occurs 

between Victorville 

and Barstow.

Mojave fringe-toed 

lizard

Uma scoparia

--/SSC/S/W, NE Extreme northeastern Los Angeles, San 

Bernardino, western Riverside, and Inyo 

counties

Creosote bush scrub in areas of aeolian 

sand, typically no coarser than 0.75 mm in 

diameter

Potential. Suitable 

habitat occurs 

between Victorville 

and Barstow in dune 

habitat.

Birds

American white 

pelican

Pelecanus 

erythrorhynchos

(nesting colony)

--/SSC/--/W Historically, nested at large lakes throughout 

California; only breeding colonies in the state 

occur at lower Klamath National Wildlife 

Refuge, Siskiyou County, and at Clear Lake, 

Modoc County; winters along the California 

coast from southern Sonoma County to Baja.

Freshwater lakes with islands for breeding; 

inhabits river sloughs, freshwater marshes, 

salt ponds, and coastal bays during the rest 

of the year

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area and is 

outside the known 

range of this species.

F-Q-29
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Double-crested 

cormorant

Phalacrocorax 

auritus (rookery 

site)

--/SSC/--/W Winters along the entire California coast and 

inland over the Coast Ranges into the Central 

Valley from Tehama County to Fresno County; 

a permanent resident along the coast from 

Monterey County to San Diego County, along 

the Colorado River, Imperial, Riverside, Kern 

and King Counties, and the islands off San 

Francisco; breeds in Siskiyou, Modoc, Lassen, 

Shasta, Plumas, and Mono Counties; also 

breeds in the San Francisco Bay Area and in 

Yolo and Sacramento Counties 

Rocky coastlines, beaches, inland ponds, 

and lakes; needs open water for foraging, 

and nests in riparian forests or on protected 

islands, usually in snags

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Western least 

bittern

Ixobrychus exilis 

hesperis (nesting)

--/SSC/--/NE Permanent residents along the Colorado River 

and Salton Sea and in isolated areas in 

Imperial, San Diego, and Los Angeles 

Counties; summers at Tulare Lake and parts of 

Fresno, Merced, Madera, Siskiyou, and Modoc 

Counties; and in marshlands of Yolo, Sutter

Marshes and along pond edges, where tules 

and rushes can provide cover; nests are built 

low in the tules over the water

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

White-faced ibis

Plegadis chihi

(rookery site)

--/SSC/--/NE Both resident and winter populations on the 

Salton Sea and in isolated areas in Imperial, 

San Diego, Ventura, and Fresno Counties; 

breeds at Honey Lake, Lassen County, at 

Mendota Wildlife Management Area, Fresno 

County, and near Woodland, Yolo County.

Prefers freshwater marshes with tules, 

cattails, and rushes, but may nest in trees 

and forage in flooded agricultural fields, 

especially flooded rice fields

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Northern harrier

Circus cyaneus

--/SSC/--/W, NE Occurs throughout lowland California. Has 

been recorded in fall at high elevations

Grasslands, meadows, marshes, and 

seasonal and agricultural wetlands

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Golden eagle

Aquila chrysaetos

PR/SSC,FP/--/NE Foothills and mountains throughout California. 

Uncommon nonbreeding visitor to lowlands 

such as the Central Valley

Nest on cliffs and escarpments or in tall trees 

overlooking open country. Forages in annual 

grasslands, chaparral, and oak woodlands 

with plentiful medium and large-sized 

mammals

Potential. Suitable

nesting habitat occurs 

in areas containing 

cliffs and rocky 

outcrops.

F-Q-30
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Bald eagle

Haliaeetus 

leucocephalus

T/E/--/W Nests in Siskiyou, Modoc, Trinity, Shasta, 

Lassen, Plumas, Butte, Tehama, Lake, and 

Mendocino Counties and in the Lake Tahoe 

Basin. Reintroduced into central coast. Winter 

range includes the rest of California, except 

the southeastern deserts, very high altitudes in 

the Sierra Nevada, and east of the Sierra 

Nevada south of Mono County

In western North America, nests and roosts in 

coniferous forests within 1 mile of a lake, 

reservoir, stream, or the ocean

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Sharp-shinned 

hawk

Accipiter striatus

--/SSC/--/W Permanent resident in the Sierra Nevada, 

Cascade, Klamath, and north Coast Ranges at 

mid elevations and along the coast in Marin, 

San Francisco, San Mateo, Santa Cruz, and 

Monterey Counties. Winters over the rest of 

the state except at very high elevations

Dense canopy ponderosa pine or mixedconifer forest and riparian habitatsNo potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Cooper’s hawk

Accipiter cooperii

--/SSC/--/W, NE Throughout California except high altitudes in 

the Sierra Nevada. Winters in the Central 

Valley, southeastern desert regions, and plains 

east of the Cascade Range

Nests in a wide variety of habitat types, from 

riparian woodlands and digger pine-oak 

woodlands through mixed conifer forests

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

within the project 

study area.

Swainson’s hawk

Buteo swainsoni

--/T/--/W, NE Lower Sacramento and San Joaquin Valleys, 

the Klamath Basin, and Butte Valley. Highest 

nesting densities occur near Davis and 

Woodland, Yolo County

Nests in oaks or cottonwoods in or near 

riparian habitats. Forages in grasslands, 

irrigated pastures, and grain fields

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

within the project 

study area.

Ferruginous hawk

Buteo regalis

--/SSC/--/W, NE Does not nest in California; winter visitor along 

the coast from Sonoma County to San Diego 

County, east-ward to the Sierra Nevada 

foothills and south-eastern deserts, the InyoWhite Mountains, the plains east of the 

Cascade Range, and Siskiyou County

Open terrain in plains and foothills where 

ground squirrels and other prey are available

No potential. This 

species does not nest 

in California.

F-Q-31
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Prairie falcon

Falco mexicanus

--/SSC/--/NE Permanent resident in the south Coast, 

Transverse, Peninsular, and northern Cascade 

Ranges, the southeastern deserts, Inyo-White

Mountains, foothills surrounding the Central 

Valley, and in the Sierra Nevada in Modoc, 

Lassen, and Plumas Counties. Winters in the 

Central Valley, along the coast from Santa 

Barbara County to San Diego County, and in 

Marin, Sonoma, Humboldt, Del Norte, and Inyo 

Counties

Nests on cliffs or escarpments, usually 

overlooking dry, open terrain or uplands

Potential. Suitable 

nesting habitat occurs 

in areas containing 

cliffs and rocky 

outcrops.

Yuma clapper rail

Rallus longirostris 

yumanensis

E/E/--/W Permanent resident in the Salton Sea and 

along the Colorado River in San Bernardino, 

Riverside, and Imperial Counties

Freshwater marshes and brackish marshes; 

requires regenerating marsh for foraging and 

mature cattail and bulrush for nesting

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Mountain plover

Charadrius 

montanus

PT/SSC/--/W Does not breed in California; in winter, found in 

the Central Valley south of Yuba County, along 

the coast in parts of San Luis Obispo, Santa 

Barbara, Ventura, and San Diego Counties; 

parts of Imperial, Riverside, Kern, and Los 

Angeles Counties

Occupies open plains or rolling hills with short 

grasses or very sparse vegetation; nearby 

bodies of water are not needed; may use 

newly plowed or sprouting grain fields

No potential. This 

species does not nest 

in California.

Western snowy 

plover (inland 

population)

Charadrius 

alexandrinus 

nivosus

--/SSC/--/W, NE Nests at inland lakes throughout northeastern, 

central, and southern California, including 

Mono Lake and Salton Sea

Barren to sparsely vegetated ground at 

alkaline or saline lakes, reservoirs, ponds and 

riverine sand bars; also along sewage, saltevaporation, and agricultural waste-water 

ponds

Potential. Suitable 

nesting habitat occurs 

near several alkaline 

lakes within the project 

study area.

Long-billed curlew

Numenius 

americanus

--/SSC/--/W Nests in northeastern California in Modoc, 

Siskiyou, and Lassen Counties. Winters along 

the coast and in interior valleys west of Sierra 

Nevada

Nests in high-elevation grasslands adjacent 

to lakes or marshes. During migration and in 

winter; frequents coastal beaches and 

mudflats and interior grasslands and 

agricultural fields

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

F-Q-32
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

California gull

Larus californicus

(nesting colony)

--/SSC/--/W Winters along the Pacific coast from British 

Columbia to Mexico; in the interior of 

California, it frequents the Sacramento River 

Delta and Central Valley, the plains east of the 

Cascade Range, northern Plumas County and 

southwestern Mono County. A small nesting 

colony has also become established along the 

southern shores of the Salton Sea in Imperial 

and Riverside Counties

Forages in a variety of habitats, including 

beaches, mudflats, freshwater and alkali 

marshes, rivers, lakes, and urban areas; 

nests colonially on islands isolated from 

mainland predators

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Western yellowbilled cuckoo

Coccyzus 

americanus 

occidentalis

--/E/--/W, NE Nests along the upper Sacramento, lower 

Feather, south fork of the Kern, Amargosa, 

Santa Ana, and Colorado Rivers

Wide, dense riparian forests with a thick 

understory of willows for nesting; sites with a 

dominant cottonwood overstory are preferred 

for foraging; may avoid valley-oak riparian 

habitats where scrub jays are abundant

No potential. Suitable 

nesting habitat was 

determined not to 

occur in the riparian 

forest within the 

project study area.

Western burrowing 

owl

Athene cunicularia 

hypugea

--/SSC/S/W, NE Lowlands throughout California, including the 

Central Valley, northeastern plateau, 

southeastern deserts, and coastal areas. Rare 

along south coast

Level, open, dry, heavily grazed or low 

stature grassland or desert vegetation with 

available burrows

Potential. Suitable

nesting habitat occurs 

throughout the project 

study area.

Long-eared owl

Asio otus

--/SSC/--/W, NE Permanent resident east of the Cascade 

Range from Placer County north to the Oregon 

border, east of the Sierra Nevada from Alpine 

County to Inyo County. Scattered breeding 

populations along the coast and in 

southeastern California. Winters throughout 

the Central Valley and southeastern California

Nests in abandoned crow, hawk, or magpie 

nests, usually in dense riparian stands of 

willows, cottonwoods, live oaks, or conifers

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

and scrub within the 

project study area.

Vaux’s swift

Chaetura vauxi

--/SSC/--/W Coastal belt from Del Norte County south to 

Santa Cruz County and in mid elevation forests 

of the Sierra Nevada and Cascade Range

Nests in hollow, burned-out tree trunks in 

large conifers

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area..

Brown-crested 

flycatcher

Myiarchus 

tyrannulus

--/SSC/--/W, NE Known to nest in California along the Colorado 

and Mojave rivers as well as a few other 

localities scattered in the southern deserts

Breeds in cottonwood and/or willow riparian 

forests dominated by large trees. Has been 

known to nest in residential areas with large 

trees near the Colorado river. Nests in tree 

cavities made by excavating species such as 

woodpeckers.

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

within the project 

study area.

F-Q-33
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Vermilion flycatcher

Pyrocephalus 

rubinus (nesting)

--/SSC/--/ W, NE A rare, year-long resident along the Lower 

Colorado River, especially near Blythe, 

Riverside County. A few breed at Morongo 

Valley and the Mojave Narrows, San 

Bernardino County

Nests in desert riparian habitats dominated 

by cottonwood, willow, and mesquite trees 

adjacent to open areas

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

and scrub within the 

project study area.

Southwestern 

willow flycatcher

Empidonax traillii 

extimus

E/E/--/W, NE Breeds in coastal southern California in the 

Los Angeles Basin, the San 

Bernardino/Riverside area, and San Diego 

County; no longer breeds along the Colorado 

River and is known to exist only in eight widely 

disjunct nesting populations

Densely vegetated riparian habitat with 

streamside associations of cottonwoods and 

willows

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

and scrub within the 

project study area.

Bank swallow

Riparia riparia

--/T/--/W Occurs along the Sacramento River from 

Tahama County to Sacramento County, along 

the Feather and lower American Rivers, in the 

Owens Valley; and in the plains east of the 

Cascade Range in Modoc, Lassen, and 

northern Siskiyou Counties. Small populations 

near the coast from San Francisco County to 

Monterey County. Deemed extirpated from 

southern California

Nests in bluffs or banks, usually adjacent to 

water, where the soil consists of sand or 

sandy loam

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Le Conte’s thrasher

Toxostoma lecontei

--/SSC/--/W, NE Resident of the deserts of southern California 

from Inyo County south to the Mexican border

Occurs in desert scrub habitats, open 

washes, and in Joshua tree habitat

Potential. Suitable 

nesting habitat occurs 

throughout the project 

study area.

Bendire’s thrasher

Toxostoma bendirei

--/SSC/S/W, NE Breeding distribution occurs exclusively in the 

Mojave Desert

Habitat in the California portion of the Mojave 

is characterized by Joshua trees and/or other 

yucca spp. and cholla cactus.

Potential. Suitable 

nesting habitat occurs 

in the Joshua tree 

woodland within the 

project study area.

Crissale thrasher

Toxostoma crissale 

(=dorsale)

--/SSC/--/NE Occurs throughout southeastern deserts but 

most common along the Lower Colorado river

Inhabits the dense understory of desert 

riparian and desert wash habitats. In the 

eastern Mojave Desert of San Bernardino 

and Inyo counties, occurs in shrubs of 

washes in pinyon-juniper habitats

Potential. Suitable 

nesting habitat occurs 

in desert washes 

within the project 

study area.

F-Q-34
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Loggerhead shrike

Lanius ludovicianus

--/SSC/--/W Resident and winter visitor in lowlands and 

foothills throughout California. Rare on coastal 

slope north of Mendocino County, occurring 

only in winter

Prefers open habitats with scattered shrubs, 

trees, posts, fences, utility lines, or other 

perches

Potential. Suitable 

nesting habitat occurs 

throughout the project 

study area.

Gray vireo

Vireo vicinior

(nesting)

--/SC/S/W, NE Summer resident throughout the mountains of 

the southeastern deserts from 600-2,000 m 

including the northeastern slopes of the San 

Bernardino Mountains, the San Jacinto 

Mountains, and the southern slopes of the 

Laguna Mountains

Breeds in arid, shrub covered slopes with 

moderate cover and small trees including 

oaks, pinyon pine, and juniper

Potential. Suitable 

nesting habitat occurs 

in desert scrub 

habitats within the 

project study area.

Least Bell’s vireo

Vireo bellii pusillus

E/E/--/W, NE Small populations remain in southern Inyo,

southern San Bernardino, Riverside, San 

Diego, Orange, Los Angeles, Ventura, and 

Santa Barbara Counties

Riparian thickets either near water or in dry 

portions of river bottoms; nests along margins 

of bushes and forages low to the ground; 

may also be found using mesquite and arrow 

weed in desert canyons

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

and scrub within the 

project study area.

Hepatic tanager

Piranga flava

--/SSC/--/W, NE Breeds in the mountain ranges of eastern San 

Bernardino County

Often found in mixed montane woodlands in 

association with oak and pine trees, but also 

observed breeding in arid coniferous 

woodland.

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Summer tanager

Piranga rubra

(nesting)

--/SSC/--/W, NE Along the Colorado river valley and in 

scattered locations inland in the desert, 

including northeastern Los Angeles county

Breeds in mature, desert riparian habitats 

dominated by cottonwood and willow

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

within the project 

study area.

Yellow-breasted 

chat

Icteria virens

--/SSC/--/W, NE Nests locally in coastal mountains and Sierra 

Nevada foothills, east of the Cascades in 

northern California, along the Colorado river, 

and very locally inland in southern California

Nests in dense riparian habitats dominated 

by willows, alders, Oregon ash, tall weeds, 

blackberry vines, and grapevines

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

within the project

study area.

Yellow warbler

Dendroica petechia 

brewsteri (nesting)

--/SSC/--/W, NE Nests over all of California except the Central 

Valley, the Mojave Desert region, and high 

altitudes and the eastern side of the Sierra 

Nevada. Winters along the Colorado River 

and in parts of Imperial and Riverside 

Counties. Two small permanent populations in 

San Diego and Santa Barbara Counties

Nests in riparian areas dominated by willows, 

cottonwoods, sycamores, or alders or in 

mature chaparral; may also use oaks, 

conifers, and urban areas near stream 

courses

Potential. Suitable 

nesting habitat occurs 

in the riparian forest 

within the project 

study area.

F-Q-35
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Virginia’s warbler

Vermivora virginiae

--/SSC/--/W, NE Five breeding populations in California: one on 

the border of Mono and Inyo Counties and four 

in San Bernardino County

Desert mountains with open stands of pinyon 

pine and white fir; scattered shrubs required 

for cover on the ground

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Inyo California 

towhee

Pipilo crissalis 

cromophilus

T/E/--/W, NE Restricted to a 95-square-mile area of the 

Mojave Desert west of Death Valley, Inyo 

County

Nests in dense stands of riparian vegetation, 

especially arroyo willow and desert olive; 

forages in sparsely vegetated desert scrub

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

California grayheaded junco

Junco hyemalis 

caniceps (nesting)

--/SSC/--/W,NE Nests in the White Mountains, Grapevine 

Mountains, and Clark Mountain of San 

Bernardino County

Observed breeding in association with pinyon 

pine and juniper woodlands

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Tricolored blackbird

Agelaius tricolor

--/SSC/S/W, NE Permanent resident in the Central Valley from 

Butte County to Kern County. Breeds at 

scattered coastal locations from Marin County 

south to San Diego County; and at scattered 

locations in Lake, Sonoma, and Solano 

Counties. Rare nester in Siskiyou, Modoc, and 

Lassen Counties

Nests in dense colonies in emergent marsh 

vegetation, such as tules and cattails, or 

upland sites with blackberries, nettles, 

thistles, and grain fields. Habitat must be 

large enough to support 50 pairs. Probably 

requires water at or near the nesting colony

No potential. Suitable 

nesting habitat does 

not occur in the project 

study area.

Mammals

Bats

Pallid bat

Antrozous pallidus

--/SSC/S/W, NE Occurs throughout California except the high 

Sierra from Shasta to Kern County and the 

northwest coast, primarily at lower and mid 

elevations

Occurs in a variety of habitats from desert to 

coniferous forest. Most closely associated 

with oak, yellow pine, redwood, and giant 

sequoia habitats in northern California and 

oak woodland, grassland, and desert scrub in 

southern California. Relies heavily on trees 

for roosts

Potential. Suitable 

habitat occurs in the 

desert scrub habitats 

within the project 

study area.

Pacific Townsend’s 

(=western) bigeared bat

Corynorhinus 

townsendii 

townsendii

--/SSC/S/W, NE Coastal regions from Del Norte County south 

to Santa Barbara County

Roosts in caves, tunnels, mines, and dark 

attics of abandoned buildings. Very sensitive 

to disturbances and may abandon a roost 

after one onsite visit

Potential. Suitable 

habitat occurs in the 

desert scrub habitats 

within the project 

study area.

F-Q-36
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Greater western 

mastiff bat

Eumops perotis 

californicus

--/SSC/--/W, NE Occurs along the western Sierra primarily at 

low to mid elevations and widely distributed 

throughout the southern coast ranges. Recent 

surveys have detected the species north to the 

Oregon border

Found in a wide variety of habitats from 

desert scrub to montane conifer. Roosts and 

breeds in deep, narrow rock crevices, but 

may also use crevices in trees, buildings, and 

tunnels

Potential. Suitable 

habitat occurs in the 

desert scrub habitats 

within the project 

study area.

Spotted bat 

Euderma maculata

--/SSC/S/W, NE Occurs throughout eastern and southern 

California, the central Sierra Nevada, and the 

Sierra Nevada foothills bordering the San 

Joaquin Valley. One recent record from 

northern California in the Trinity Alps. Probably 

occurs in other portions of the state where 

habitat is suitable

Found in a wide variety of habitats from low 

desert to high elevation coniferous forest, 

primarily in areas associated with cliff and 

canyon habitat. Females may favor 

ponderosa pine forests during reproduction

Potential. Suitable 

roosting habitat occurs 

in areas containing 

cliffs and rocky 

outcrops.

Silver-haired bat

Lasionycteris 

noctivagans

--/SSC/--/-- Occurs along the coast and inland from 

Monterey and Fresno northward into the 

Pacific Northwest. Has been known to winter in 

xeric areas of southern California and 

southward into Mexico

Roosts in tree cavities, under bark, or in old 

snags in coniferous and deciduous forest. 

Forages over water or in openings in the 

forest.

Potential. Suitable 

roosting habitat occurs 

in riparian habitat.

Hoary bat

Lasiurus cinereus

--/SSC/--/-- Occurs in wooded habitat throughout California 

except at higher elevations in the Sierra 

Nevada Mountain Range

Roosts under foliage in trees, in cavities, or 

under bark in heavily forest areas of both 

coniferous and deciduous woodland.

No potential. Suitable 

habitat does not occur 

in the project study 

area.

California leafnosed bat

Lasiurus cinereus

SC/SSC/S* Found throughout Imperial County and in the 

eastern portions of San Bernardino, Riverside, 

and San Diego

Day roosts are usually large caves or deep 

mine tunnels with high ceilings and humid 

conditions.

Potential. Suitable 

roosting habitat occurs 

in areas containing 

cliffs and rocky 

outcrops.

Western smallfooted myotis

Myotis ciliolabrum

--/--/S/NE Occurs in the Sierra Nevada, south Coast, 

Transverse, and Peninsular Ranges, and in 

the Great Basin

Open stands in forests and woodlands, as 

well as shrub lands and desert scrub. Uses 

caves, crevices, trees, and abandoned 

buildings

Potential. Suitable 

habitat occurs in the 

desert scrub habitats 

within the project 

study area.

Long-eared myotis

Myotis evotis

--/--/S/NE Occurs throughout California except the 

southeastern deserts and the Central Valley

Occurs primarily in high elevation coniferous 

forests, but also found in mixed 

hardwood/conifer, high desert, and humid 

coastal conifer habitats

No potential. The 

project study area is 

outside the known 

range of this species.

F-Q-37
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Fringed myotis

Myotis thysanodes

--/--/S/W, NE Occurs throughout California except the 

southeastern deserts and the Central Valley

Found in a wide variety of habitats from low 

desert scrub to high elevation coniferous 

forests. Day and night roosts in caves, 

mines, trees, buildings, and rock crevices

No potential. The 

project study area is 

outside the known 

range of this species.

Cave myotis

Myotis velifer

--/SSC/S/-- Found in the Colorado River Valley and 

adjacent mountain ranges in San Bernardino, 

Riverside, and Imperial Counties

Typically roosts in caves, but may also use 

mines and buildings; hibernation and nursery 

caves are relatively warm and humid with 

standing or running water.

No potential. The 

project study area is 

outside the known 

range of this species.

Long-legged 

myotis

Myotis volans --/--/--/W

Found in the mountains of the Mojave Desert, 

central San Diego County, the Coast Ranges, 

and the Tehachapi’s.

Roost in abandoned buildings, mines, rock 

crevices and trees in coniferous montane 

forest habitats.

No potential. Suitable 

habitat does not occur 

in the project study 

area.

Yuma myotis

Myotis yumanensis

--/--/S/--

Common and widespread throughout most of 

California except the Colorado and Mojave 

deserts

Found in a wide variety of habitats from sea 

level to 11,000 ft., but uncommon above 

8,000 ft. Optimal habitat is open forests and 

woodlands near water bodies

No potential. The 

project study area is 

outside the known 

range of this species.

Pocketed free-tailed 

bat

Nyctinomops 

femorosaccus

--/SSC/--/W, NE

Occurs in Riverside, San Diego, and Imperial 

Counties

Favors rocky desert areas with high cliffs or 

rock outcrops for roosts; roosts in crevices; 

reproduces in crevices, caverns, or buildings

No potential. The 

project study area is 

outside the known 

range of this species.

Rodents

Pallid San Diego 

pocket mouse

Chaetodipus 

(=Perognathus) 

fallax pallidus

--/SSC/-- San Diego County, Riverside County west of 

Palm Springs, San Bernardino County from 

Cactus Flat and Oro Grande east to Twenty 

Nine-Palms

Occurs in arid coastal and desert habitats 

including coastal scrub, chaparral, chamiseredshank, desert scrub, pinyon-juniper, and 

annual grassland

No potential. The 

project study area is 

outside the known 

range of this species.

Mojave River vole

Microtus 

californicus 

mohavensis

--/SSC/--/W Mojave River near Victorville and Oro Grande, 

San Bernardino County

Weedy herbaceous growth in wet areas 

along river

Potential. Suitable 

habitat occurs along 

the Mojave river.

Tehachapi pocket 

mouse

Perognathus 

alticola 

inexpectatus

--/SSC/--/W Known only near Tehachapi Pass and Mount 

Pinos in Kern and Los Angeles Counties

Annual grassland and desert scrub 

communities from 3,500 to 6,000 feet

No potential. The 

project study area is 

outside the known 

range of this species.

F-Q-38
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

Yellow-eared 

pocket mouse

Perognathus 

xanthonotus

--/--/S/W Restricted to a single locality near Walker 

Pass, Kern County

Pinyon-juniper, Joshua Tree and mixed 

montane chaparral habitats

No potential. The 

project study area is 

outside the known 

range of this species.

Mohave ground 

squirrel

Spermophilus 

mohavensis

--/T/--/W, NE Southwestern Inyo County, eastern Kern 

County, northwestern San Bernardino County, 

and northeastern Los Angeles County

Saltbush, alkali desert, and creosote bush 

scrub at elevations from 1,800 to 5,000 feet

Potential. Suitable 

habitat occurs in the 

desert scrub habitats 

within the project 

study area.

Argus Mountain 

Kangaroo Rat

Dipodomys 

panamintinus

argusensis

--/--/--/W Observed on the western slopes of the Argus 

Mountains in Inyo County

Creosote scrub, saltbush scrub, Joshua tree 

and juniper woodland habitats, generally on 

course sandy and gravelly soils.

No potential. The 

project study area is 

outside the known 

range of this species.

Mustelids

American badger

Taxidea taxidus

–/SSC/--/-- Found throughout most of California except in 

the northern North Coast area. Suitable 

habitat is characterized by herbaceous, shrub, 

and open stages of most habitats with dry, 

friable soils.

Dig burrows in friable soils for cover. 

Frequently uses old burrows.

Potential. Suitable 

habitat occurs 

throughout the project 

study area.

Ungulates

Nelson’s (Desert) 

bighorn sheep

Ovis canadensis 

nelsoni

--/ FP/S/W, NE Desert mountain ranges from white mountains 

of Mono & Inyo Co. south to San Bernardino

Mtns and southeast to the Mexican border

Pinyon-juniper, desert scrub and sagebrush 

habitats

Potential. Suitable 

habitat occurs in the 

cliff areas within the 

project study area.

F-Q-39
Common and 

Scientific Name Federal/State/BLM/HCPa California Distribution Habitats

Occurrence in 

Project Study Area

a

Status explanations:

Federal

E = listed as endangered under the federal Endangered Species Act.

T = listed as threatened under the federal Endangered Species Act.

PE = proposed for federal listing as endangered under the federal Endangered Species Act.

PT = proposed for federal listing as threatened under the federal Endangered Species Act.

C = species for which USFWS has on file sufficient information on biological vulnerability and threat(s) to support issuance of a proposed rule to list, but 

issuance of the proposed rule is precluded.

FS = U.S. Forest Service sensitive species (Region).

-- = no listing.

State

E = listed as endangered under the California Endangered Species Act.

T = listed as threatened under the California Endangered Species Act.

FP = fully protected under the California Fish and Game Code.

SSC = species of special concern in California.

-- = no listing.

BLM

S = listed as sensitive by the Bureau of Land Management.

-- = no listing.

HCP

W = species covered by the West Mojave Habitat Conservation Plan.

NE = species covered by the Northern and Eastern Mojave Plan

-- = no listing.

F-Q-40
Table 4. Special-status Wildlife Species with Potential to Occur in the Vicinity of the DesertXpress Project: Nevada 

Common and 

Scientific Name

Federal/State/

BLM/HCPa Nevada Distribution Habitats

Occurrence in Project 

Study Area

Invertebrates

Gastropods

Spring Mountains 

springsnail

Pyrgulopsis 

deaconi

--/--/S/C Endemic to southern Nevada, with 

known occurrences at Willow and 

Red Springs in Red Rock Canyon 

NCA, and Kiup Spring in the Spring 

Mountains.

Found in spring and seep habitats. No potential. Project study 

area is outside of species’ 

range.

Southern Nevada 

springsnail

Pyrgulopsis 

turbatrix

--/--/S/C Endemic to the Spring Mountains in 

southern Nevada. Found only on 

the eastern slopes of the Spring 

Mountains.

Found in spring and seep habitats. No potential. Project study 

area is outside of species’ 

range.

Insects

Spring Mountains 

acastus 

checkerspot

Chlosyne acastus 

robusta

--/--/S/C Endemic to the Spring Mountains in 

southern Nevada.

Mixed conifer and pinyon-juniper; also found in sagebrush. 

Larval host plants previously believed to be 

Chrysothamnus, however, current research indicates 

other species may be used. The nectar species is 

believed to be Viguiera multiflora.

No potential. Project study 

area is outside of species’ 

range.

Dark blue butterfly

Euphilotes enoptes 

ssp.

--/--/S/C Endemic to the Spring Mountains in 

southern Nevada.

Mixed conifer and pinyon-juniper; also uses sagebrush 

and wet areas near springs. Larval host plants: Eriogonum 

umbellatum var. subaridum; known nectar species: E. 

umbellatum. Found at mid elevations (5,900 to 8,200 feet)

No potential. Project study 

area is outside of species’ 

range.

Morand’s 

checkerspot 

butterfly

Euphydryas anicia 

morandi

--/--/S/C Endemic to the Spring Mountains in 

southern Nevada.

Primarily meadows within bristlecone pine; also occurs in 

mixed conifer and pinyon-juniper forest. Larval host plants: 

Castilleja linearifolia and C. martinii var. clokeyi. Known 

nectar species: Taraxacum officinale, Erysimum asperum.

No potential. Project study 

area is outside of species’ 

range.

F-Q-41
Common and 

Scientific Name

Federal/State/

BLM/HCPa Nevada Distribution Habitats

Occurrence in Project 

Study Area

Spring Mountains 

comma skipper

Hesperia comma 

mojavensis

--/--/S/C Endemic to the Spring Mountains in 

southern Nevada.

Primarily bristlecone pine; also occurs in mixed conifer, 

pinyon-juniper, sagebrush, and wet areas near highelevation springs. Larval host plants: perennial 

grasses/Carex, which are common in the Spring 

Mountains. Known nectar species: Cirsium sp., 

Chaenactis douglasii, Apocynum androsaemifolium, 

Chrysothamnus sp., Taraxacum officinale, Sarcostemma 

cynanchoides, Penstemon palmeri, Erysimum asperum.

No potential. Project study 

area is outside of species’ 

range.

Spring Mountains 

icarioides blue

Icaricia icarioides 

austinorum

--/--/S/C Endemic to the Spring Mountains in 

southern Nevada.

Open stands and meadows, primarily in bristlecone pine 

and mixed conifer; also uses pinyon-juniper, sagebrush, 

and wet areas near high-elevation springs. Larval host 

plants: Lupinus argenteus. Known nectar species: 

Eriogonum umbellatum, Chaenactis douglasii, Potentilla 

sp., Lupinus sp., Linum lewisii, Melilotus albus, Erigeron 

sp., Senecio douglasii.

No potential. Project study 

area is outside of species’ 

range.

Mount Charleston 

blue butterfly

Icaricia shasta 

charlestonensis

--/--/--/C Endemic to the Spring Mountains in 

southern Nevada.

Primarily bristlecone pine, but also in mixed conifer 

between 6,000 and 8,000 ft. Known larval host species: 

Astragalus calycosus var. mancus, which prefers shallow 

rocky soils. Nectar plants: Hymenoxys lemmonii, Aster 

sp., and Eriogonum sp.

No potential. Project study 

area is outside of species’ 

range.

Nevada admiral 

Limenitus 

weidemeyerii 

nevadae

--/--/S/C Endemic to southern Nevada, 

specifically the Spring and Sheep 

Mountains

Primarily bristlecone pine, but also mixed conifer, pinyonjuniper, and wet areas near high-elevation springs. Larval 

host plants: Populus tremuloides, Salix sp., Prunus 

virginiana, and Amelanchier utahensis, and possibly 

Populus angustifolia and/or P. fremontii. Nectar species: 

Eriodictyon angustifolium, Cirsium sp., Clematis 

ligusticifolia, Marrubium vulgare

No potential. Project study 

area is outside of species’ 

range.

Carole’s silverspot 

butterfly

Speyeria zerene 

carolae

--/--/S/C Endemic to the Spring Mountains in 

southern Nevada

Primarily bristlecone pine; also occurs in mixed conifer, 

pinyon-juniper, and sagebrush. Larval host plants: Viola 

purpurea var. charlestonensis. Known nectar species: 

Cirsium arizonicum, Erysimum asperum, Apocynum 

androsaemifolium, Rosa woodsii, Angelica scabrida, 

Chaenactis sp., Lupinus sp.

No potential. Project study 

area is outside of species’ 

range.

F-Q-42
Common and 

Scientific Name

Federal/State/

BLM/HCPa Nevada Distribution Habitats

Occurrence in Project 

Study Area

Vertebrates

Amphibians

Arizona toad

Bufo microscaphus 

microscaphus

--/--/S/E Along the Virgin and Muddy Rivers, 

Meadow Valley Wash, and the 

Colorado River to Hoover Dam.

Inhabits a range of habitats including riparian washes, 

rocky streams, basins, agricultural, and urban areas up to 

6,000 ft. They burrow in loose gravelly areas or sandy 

banks and range up to 500 ft from water.

No potential. Project study 

area is outside of species’ 

range.

Relict leopard frog

Rana onca

--/--/--/C Endemic to Clark County. Clark 

County populations remain within 

small areas on National Park 

Service Lands, in the Rogers/Blue 

Point Springs area south of Overton, 

and in springs in Black Canyon 

below Hoover Dam.

Desert riparian habitat along permanent streams, 

tributaries, and springs and other water impoundments up 

to 2,500 ft elevation.

No potential. Project study 

area is outside of species’ 

range.

Reptiles

Banded gecko

Coleonyx 

variegatus

--/--/--/C Endemic to the southwestern 

deserts, found in southern Nevada; 

widespread throughout Clark 

County.

Inhabits blackbrush, Mojave desert scrub, mesquite, and 

catclaw acacia habitats. Less commonly found in pinyonjuniper, sagebrush, and desert riparian habitats. Rocks, 

crevices, fallen logs, limbs, and rubbish piles provide 

shelter.

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Great Basin 

collared lizard

Crotaphytus 

insularis bicinctores

--/--/--/C Endemic to the Great Basin and 

southwestern deserts, found in 

western and southern Nevada; 

widespread throughout Clark 

County.

Found in Mojave desert scrub, salt desert scrub, 

mesquite, catclaw acacia, desert riparian, blackbrush, 

sagebrush, and pinyon-juniper habitats in rocky terrain: 

arroyos, hill slopes, washes with sparse vegetative cover, 

up to 7,500 ft.

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Desert iguana

Dipsosaurus 

dorsalis

--/--/--/C Found in the southwestern deserts 

south into Mexico. Species is found 

in southern Nevada; widespread 

throughout Clark County.

Mojave desert scrub flats with sandy hummocks, 

mesquite, and salt desert scrub habitats are most 

common, but also found in rocky stream beds, on bajadas, 

and in rocky hilly areas below 5,000 feet.

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

F-Q-43
Common and 

Scientific Name

Federal/State/

BLM/HCPa Nevada Distribution Habitats

Occurrence in Project 

Study Area

Western red-tailed 

skink

Eumeces gilberti 

rubricaudatus

--/--/--/C Found in southern Nevada in 

isolated montane populations 

(Spring, Sheep, and Newberry 

Mountains) as well as in the eastern 

Mojave Desert in limited montane 

habitats.

Inhabits pinyon-juniper and riparian habitat including 

canyon bottoms near water. Less common in higherelevation habitats including mixed conifer, sagebrush, 

blackbrush, mesquite, catclaw acacia, and desert riparian 

habitats in rocky areas or where logs or leaf cover are 

proximate to permanent or intermittent streams.

No potential. Project study 

area is outside of species’ 

range.

Large-spotted 

leopard lizard

Gambelia wislizenii 

wislizenii

--/--/--/C Endemic to the Great Basin and 

southwestern deserts, widespread 

throughout Clark County.

Primarily inhabits Mojave desert scrub and salt desert 

scrub, but also occurs in blackbrush, sagebrush, and 

pinyon-juniper habitats. Prefers hardpan, gravelly, or 

sandy open ground where vegetation is sparse or in small 

clumps; below 6,000 ft.

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Desert tortoise

Gopherus agassizii

T/P/--/C Endemic to the Mojave desert, found 

in lowland desert habitat in Clark 

County.

Desert areas from 300 to 4500 feet with sandy loam to 

gravelly soils for digging dens; favors creosote and cactus 

scrub habitats with high densities of annual blooms in 

spring for feeding

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Banded gila 

monster (population 

west of Colorado 

River)

Heloderma 

suspectum cinctum

--/--/S/E Found in the eastern Mojave and 

northern Sonoran deserts, with 

historical records occurring in Clark 

and Lincoln Counties.

Rocky areas in association with desert scrub and semidesert grassland; found from 0-3600 feet.Potential. Suitable habitat 

occurs where project study 

area crosses lower mountain 

passes.

Western chuckwalla

Sauromalus obesus 

obesus

--/--/--/C Endemic to the Mojave and Sonoran 

deserts, found in southern Nevada; 

widespread throughout Clark 

County.

Found within desert scrub including Mojave desert scrub, 

blackbrush, salt desert scrub, mesquite, and catclaw 

acacia on areas with rocky cover or boulder outcrops 

typically on slopes and open flats below 6,100 ft.

Potential. Suitable habitat 

occurs where project study 

area crosses lower mountain 

passes.

Sidewinder

Crotalus cerastes

--/--/--/C Endemic to the Mojave desert, found 

in southern Nevada; widespread 

throughout Clark County.

Mojave desert scrub, mesquite, catclaw acacia, and salt 

desert scrub habitats are most common, but also found in 

rocky stream beds, on bajadas, hardpan, barren dunes, 

and in rocky areas below 5,500 ft elevation.

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

F-Q-44
Common and 

Scientific Name

Federal/State/

BLM/HCPa Nevada Distribution Habitats

Occurrence in Project 

Study Area

Speckled 

rattlesnake

Crotalus mitchelli

--/--/--/C Endemic to the Mojave and Sonoran 

deserts, found in southern Nevada; 

widespread throughout Clark 

County.

Pinyon-juniper, sagebrush, Mojave desert scrub, and 

blackbrush habitats up to 7,800 ft. Primarily found in rocky 

terrain on outcrops and boulders, but will also occupy 

loose soil and sand.

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Mojave green 

rattlesnake

Crotalus scutulatus 

scutulatus

--/--/--/C Found in the Mojave and Sonoran 

deserts south into central Mexico. 

Species is found in southern 

Nevada; widespread throughout 

Clark County.

Mojave desert scrub and blackbrush flats Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Glossy snake

Arizona elegans

--/--/--/C Endemic to the southwestern 

deserts, found in southern Nevada; 

widespread throughout Clark 

County.

Mojave desert scrub and salt desert scrub habitats with 

open sandy surface, scattered brush, and rocky areas; 

extending into grasslands and pinyon-juniper habitats to 

7,000 ft.

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Common king 

snake

Lampropeltis 

getulus californiae

--/--/--/C Found in southern Nevada, 

throughout Clark County.

Wide ranging, most commonly found in Mojave desert 

scrub and salt desert habitats in the vicinity of rock 

outcrops or clumps of vegetation; can range up to 7,000 ft

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Western leaf-nosed 

snake

Phyllorhynchus 

decurtatus

--/--/--/C Found in southern Nevada, 

throughout Clark County.

Mojave desert scrub and salt desert scrub habitats in 

rocky areas and sandy flats.

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Western longnosed snake

Rhinocheilus 

lecontei lecontei

--/--/--/C Found throughout Nevada, except in 

the extreme northern regions of the 

state.

Mojave desert scrub and salt desert scrub with open 

sandy surface, scattered brush, and in rocky areas below 

5,000 ft.

Potential. Suitable habitat 

occurs throughout project 

study area outside of urban 

areas.

Sonoran lyre snake

Trimorphodon 

biscutatus lambda

--/--/--/C Found in the eastern Mojave and

Sonoran deserts, in the 

southernmost region of Nevada.

Rocky areas in Mojave desert scrub, pinyon-juniper, and 

mixed conifer habitat in lowlands, mesas, and lower 

mountain slopes up to 7,400 ft.

Potential. Suitable habitat 

occurs where project study 

area crosses lower mountain 

passes.

F-Q-45
Common and 

Scientific Name

Federal/State/

BLM/HCPa Nevada Distribution Habitats

Occurrence in Project 

Study Area

Birds

American peregrine 

falcon

--/P/S/C Known to occur in the Spring 

Mountains, Logandale, Overton 

State Wildlife Management Area, 

Newberry Mountains, Desert 

National Wildlife Range, Black 

Mountains, Mormon Farm, 

Henderson, Lake Mead, and Black 

Canyon.

Inhabit mixed conifer, pinyon-juniper, sagebrush, lowland 

riparian, and grassland habitats, as well as agricultural 

and urban areas. Nests in rocky areas, cliffs, and on manmade structures.

Potential. Suitable habitat 

occurs where project study 

area crosses lower mountain 

passes.

Western yellowbilled cuckoo

Coccyzus 

americanus 

occidentalis

--/P/--/C Habitat occurs along the Virgin, 

Muddy, and Colorado River 

systems, Las Vegas Valley Wash, 

and Corn Creek.

Wide, dense riparian forests with a thick understory of 

willows for nesting; sites with a dominant cottonwood 

overstory are preferred for foraging; may avoid valley-oak 

riparian habitats where scrub jays are abundant

No potential. No suitable 

habitat in project study area.

Vermilion flycatcher

Pyrocephalus 

rubinus (nesting)

--/--/--/C Resident along the Colorado River, 

Virgin River system, and desert 

oases. Winters in desert scrub.

Nests in desert riparian habitats dominated by 

cottonwood, willow, and mesquite trees adjacent to open 

areas

No potential. No suitable 

habitat in project study area.

Southwestern 

willow flycatcher

Empidonax traillii 

extimus

E/P/S/C Southern Nevada, southern 

California, Arizona, New Mexico, 

southern Utah, western Texas, 

northwestern Mexico, and 

southwestern Colorado.

Densely vegetated riparian habitat with streamside 

associations of cottonwoods and willows

No potential. No suitable 

habitat in project study area.

Blue grosbeak 

Guiraca caerulea

--/--/--/C Habitat for this species occurs along 

the Virgin, Muddy, and Colorado 

River systems and Las Vegas Valley 

Wash.

Occurs in desert riparian, grassland habitats, agricultural 

and urban areas. They are primarily found in riparian 

habitat, such as thickets of willow, young cottonwood, 

arrowweed, tamarisk along watercourses or oases and 

forage in adjacent openings, grasslands, and croplands.

Potential. Potential habitat 

may occur where project 

study area crosses larger 

washes.

F-Q-46
Common and 

Scientific Name

Federal/State/

BLM/HCPa Nevada Distribution Habitats

Occurrence in Project 

Study Area

Phainopepla

Phainopepla nitens

--/--/--/C Resident in the Mojave region of 

southern Nevada.

Found in lowland riparian and mesquite and catclaw 

acacia habitats, as well as agricultural fields. In deserts 

they are found primarily in washes, riparian areas, and 

other habitats that support brushy growth of mesquite, 

catclaw, ironwood, and palo verde. Often in association 

with mistletoe.

Potential. Potential habitat 

may occur where project 

study area crosses larger 

washes.

Summer Tanager

Piranga rubra

--/--/--/C Found throughout the southwestern 

United States into Mexico.

Found in desert riparian habitat, particularly mature 

cottonwood-willow associations along streams.

No potential. No suitable 

habitat in project study area.

Arizona Bell’s vireo

Vireo bellii pusillus

--/--/--/C The Arizona subspecies occurs 

along the Colorado River and in 

riparian and mesic habitats in 

southern Arizona and northern 

Mexico.

Riparian thickets either near water or in dry portions of 

river bottoms; nests along margins of bushes and forages 

low to the ground; may also be found using mesquite and 

arrow weed in desert canyons

No potential. No suitable 

habitat in project study area.

Summer tanager

Piranga rubra

(nesting)

--/--/--/C Rare yearlong resident along the 

Colorado River, Virgin River system, 

and desert oases. Winter resident in 

desert scrub, permanent resident in 

riparian areas.

Breeds in mature, desert riparian habitats dominated by 

cottonwood and willow. May also be found in mesquite, 

catclaw acacia habitats adjacent to mesic areas including 

irrigated fields, ditches, and pastures

No potential. No suitable 

habitat in project study area.

Mammals

Bats

Silver-haired bat

Lasionycteris 

noctivagans

--/--/--/C Occurs from northern Mexico 

throughout the U.S. to southern 

Canada, with a wide distribution 

throughout Nevada.

Roosts in tree cavities, under bark, or in old snags in 

coniferous and deciduous forest. Forages over water or in 

openings in the forest.

No potential. No suitable 

habitat in project study area.

Long-eared myotis

Myotis evotis

--/SS/--/C Found throughout the state and is 

thought to be fairly common in 

southern Nevada with the exception 

of the extreme southern portion of 

the state.

Occurs primarily in high elevation coniferous forests, but 

also found in mixed hardwood/conifer, high desert, and 

humid coastal conifer habitats

No potential. No suitable 

habitat in project study area.

F-Q-47
Common and 

Scientific Name

Federal/State/

BLM/HCPa Nevada Distribution Habitats

Occurrence in Project 

Study Area

Long-legged 

myotis

Myotis volans

--/SS/--/C Found throughout Nevada with the 

exception of the southeastern corner 

of the state in low desert habitat.

Roost in abandoned buildings, mines, rock crevices and 

trees primarily in coniferous montane forest habitats. May 

also use habitats such as ponderosa pine/mountain shrub, 

juniper, sagebrush, and sagebrush/perennial grassland.

Potential. Suitable habitat 

occurs in Joshua tree 

woodland.

Rodents

Palmer’s chipmunk

Tamias palmeri

--/--/--/C Endemic to the Spring Mountains 

range of southern Nevada and is 

found in a small, isolated area of the 

Charleston Mountains

Occurs in bristlecone pine, mixed conifer, and pinyonjuniper habitats with rocky slopes or areas with freeflowing water.No potential. Project study 

area is outside of species’ 

range.

a

Status explanations:

Federal

E = listed as endangered under the federal Endangered Species Act.

T = listed as threatened under the federal Endangered Species Act.

-- = no listing.

State

P = protected by the state of Nevada.

SS = special status species by the state of Nevada.

-- = no listing.

BLM

S = listed as sensitive by the Bureau of Land Management.

-- = no listing.

HCP

C = species listed as a ―Covered‖ species by the Clark County Multiple Species Habitat Conservation Plan

E = species listed as an ―Evaluation‖ species by the Clark County Multiple Species Habitat Conservation Plan

W = species listed as a ―Watch List‖ species by the Clark County Multiple Species Habitat Conservation Plan

-- = no listing.

F-Q-48