coontail
Any aquatic plant of genus Ceratophyllum.
A western diamondback rattlesnake or Texas diamond-back (Crotalus atrox).
American perch (Perca flavescens).

copalxocotl
A plant used as soap in Aztec culture, probably Cyrtocarpa procera.

copei
The copaiba tree.

copey
An autograph tree (Clusia rosea).

copihue
An evergreen climbing plant, Lapageria rosea.

copihues
plural of copihue

copperweed
The plant Euphrosyne acerosa.

coprophyte
Any plant that lives on dung.

coprophytes
plural of coprophyte

coquilla
The nut of the Brazilian palm Attalea funifera.

coquillas
plural of coquilla

coracan
Finger millet (Eleusine coracana).

coralblow
Any of various plants in the genus Russelia.

coralbush
A plant of species Jatropha multifida.

coralwort
A parasitic plant of certain species of genus Lathraea (family Orobanchaceae).
Any plant now classified in the subgenus Cardamine subg. Dentaria (family Brassicaceae), formerly genus Dentaria.

coralworts
plural of coralwort

cordaitalean
Any of the order †Cordaitales of extinct gymnosperm plants.

cordaitaleans
plural of cordaitalean

cordaite
Any of genus †Cordaites of extinct gymnosperms with long, strap-shaped leaves.

cordgrass
Any of various species of coastal wetland grass in the genus Spartina.

cordgrasses
plural of cordgrass

coriamyrtin
A neurotoxin obtained from berries of the shrub Coriaria myrtifolia

cormophyte
Any plant having a proper stem or axis of growth, which is distinct from its leaves, phyllophyte

cormophytes
plural of cormophyte

cornalean
Any plant of the order Cornales

cornaleans
plural of cornalean

cornel
Any tree or shrub of the dogwood subgenera, Cornus subg. Arctocrania (syn. Cornus subg. Chamaepericlymenum) or Cornus subg. Cornus, especially Cornus mas, the European cornel.
The cherry-like fruit of such plants, certain of which are edible.

cornels
plural of cornel

cornhusk
The husk of an ear of corn (maize).

corollet
A floret in an aggregate flower.

corollets
plural of corollet

corossolone
An alkyl derivative of furanone, 4-[13-hydroxy-13-[5-(1-hydroxytridecyl)oxolan-2-yl]-8-oxotridecyl]-2-methyl-2H-furan-5-one, isolated from plants of the genus Annona.

correcte
Possibly a medicinal herb.

coryphoid
Any palm of the subfamily Coryphoideae

coryphoids
plural of coryphoid

corystosperm
Any extinct seed fern of the family Corystospermaceae

corystosperms
plural of corystosperm

cosahui
A shrub of the Sonoran Desert, Calliandra eriophylla, having pink or white powder-puff flowers, also known as fairy duster.
A shrub of arid lands, Krameria bicolor, known as white rhatany, used traditionally as a source of dye and medicine.

cotree
A tree that defines a cograph, its leaves corresponding to the nodes of the cograph.

cotrees
plural of cotree

cottonfield
a field in which the cotton plant is grown and harvested.

cottonfields
plural of cottonfield

cottonseed
The seed of the cotton plant.
The composite Micropus.

cottonseeds
plural of cottonseed

cotyledonoid
A germinating thread of a moss; a protonema.

cotyledonoids
plural of cotyledonoid

coumarou
The tree Dipteryx odorata, which bears the tonka bean.
The tonka bean itself.

coumarous
plural of coumarou

coutareagenin
A neoflavonoid found in the bark of Hintonia latiflora.

cowbind
Any plant of genus Bryonia, which form dense mats of vines when they are not overgrowing shrubs, trees, and structures, especially white bryony (Bryonia alba).

cowdie
The kauri tree.

cowdies
plural of cowdie

cowquake
quaking grass; Briza media, or other species of the genus Briza

cowquakes
plural of cowquake

coyotillo
A low rhamnaceous shrub (Karwinskia humboldtiana) of the southwestern United States and Mexico, with poisonous berries.

coyotillos
plural of coyotillo

crabweed
The annual herb Fatuoa villosa.

cranesbill
Any flowering plant of the genus Geranium found throughout the temperate zone.
A pair of long-beaked forceps.

cranesbills
plural of cranesbill

crassula
Any plant of the genus Crassula, often succulents native to southern Africa.

crassulas
plural of crassula

crataegus
Any plant of the genus Crataegus, the hawthorns.

crataeguses
plural of crataegus

crayweed
A species of brown algae, Phyllospora comosa, that forms extensive underwater forests, native to the coastal waters of eastern Australia.

creamcup
Alternative form of creamcups.

creamcups
Platystemon californicus, an ornamental flowering plant in the Papaveraceae family, found growing wild throughout the American southwest and especially on the Pacific Coast.

creashak
The bearberry, Arctostaphylos uva-ursi.

cremnophyte
Any plant that is adapted to growing on cliffs, especially in crevices.

cremnophytes
plural of cremnophyte

crepis
A plant of the genus Crepis in the family Compositae.
The central spicule of a sponge, upon which silica is deposited.

crestmarine
The plant rock samphire.

crinitol
A linear diterpenoid derived from the seaweed Cystoseira crinita, (2E,6E,9R,10E)-3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraene-1,9-diol

crinkleawn
Any grass in the genus, Trachypogon
Crinkleawn fescue, Festuca subuliflora

crisphead
A lettuce (such as iceberg lettuce) with crisp tightly packed light-green leaves in a firm head.

crispheads
plural of crisphead

cristamonad
Misspelling of chrysomonad.

cropmark
A sign of the former location of some feature (such as a wall or a ditch) revealed by variations in plant growth on the surface.
Any of the marks placed at the corners of a form to indicate where the page is to be trimmed.

cropmarks
plural of cropmark

crotalism
A condition caused by poisonous plants in the genus Crotalaria.

crowtoe
A perennial herbaceous plant, Lotus corniculatus, native to temperate Eurasia and North Africa.
An unidentified plant, probably the crowfoot.

crummock
A staff with a crooked head or stem.
skirret, a root vegetable

crummocks
plural of crummock

cryophyte
Any plant whose buds overwinter below ground
Any plant that grows on ice or snow

cryophytes
plural of cryophyte

cryosere
A sere originating when moss colonizes ice.

cryptogam
Any plant that reproduces using spores (rather than seeds), formerly placed in the taxonomic group Cryptogamae, which included ferns, mosses, algae, fungi, lichens and liverworts.

cryptogame
Alternative form of cryptogam.

cryptogames
plural of cryptogame

cryptogams
plural of cryptogam

cryptomerin
A sesquiterpene, C₁₅H₂₄O₂, derived from coniferous trees in the genus Cryptomeria, which are commonly found in East Asia.

cryptophyte
Any plant whose buds overwinter either below ground, or under water
A cryptomonad

cryptophytes
plural of cryptophyte

cryptospora
Any plant of the genus Cryptospora, of the flowering plant family Brassicaceae.
Any of a genus Cryptospora of fungi, of the family Gnomoniaceae, now genus Cryptosporella

cryptotanshinone
A quinoid diterpene, isolated from the root of the Asian medicinal plant Salvia miltiorrhiza (red sage), 1,2,6,7,8,9-hexahydro-1,6,6-trimethyl- (R)-phenanthro(1,2-b)furan-10,11-dione

ctenanthe
Any flowering plant of the genus Ctenanthe, family Marantaceae, native to Central and South America; commonly cultivated as an indoor plant.

ctenanthes
plural of ctenanthe

cudraflavone
Any of a certain group of prenylated flavones found in plants of the genus Cudrania.

cudraflavones
plural of cudraflavone

cuichunchulli
The plant Hybanthus parviflorus.

culilawan
An aromatic bark from the tree of species Cinnamomum culilawan.

cultigen
A plant that has been deliberately altered or selected by humans, that is it has resulted from artificial rather than natural selection.

cultigens
plural of cultigen

cultivar
A cultivated (not necessarily botanical) variety of a plant species or hybrid of two species.

cultivars
plural of cultivar

culverkey
An English meadow plant, perhaps the columbine or the bluebell squill (Hyacinthoides non-scripta).

culverkeys
plural of culverkey

cumaru
Alternative form of coumarou.

cumarus
plural of cumaru