# Streptanthus

Streptanthus is a genus of plants within the family Brassicaceae. There are 58 known species within the genus Streptanthus, distributed through the western and south-central United States and northern Mexico. The common names for this genus are twistflower and jewelflower. Twenty-four of the species and eleven lesser taxa occur in California, thirty-two of which are California endemics; seventeen of these California taxa are classified as rare plants.

## Species and subspecies

58 species are accepted. The following are some of the species (or subspecies) of the genus Streptanthus (county locations are not intended to be exhaustive):
* Streptanthus amplexicaulis (S.Watson) Jeps.
* Streptanthus anceps (Payson) Hoover
* Streptanthus anomalus D.L.Smith, A.Arthur & R.E.Preston
* Streptanthus barbatus S.Watson – Pacific jewelflower
* Streptanthus barbiger Greene – Bearded jewelflower
* Streptanthus barnebyi (Rollins & P.K.Holmgren) Al-Shehbaz
* Streptanthus batrachopus J.L.Morrison – Mt. Tamalpais jewelflower
* Streptanthus bernardinus (Greene) Parish – Laguna Mountain jewelflower
* Streptanthus brachiatus F.W.Hoffm. – Socrates Mine jewelflower
* Streptanthus bracteatus A.Gray – Bracted twistflower
* Streptanthus breweri A.Gray – Brewer's jewelflower
* Streptanthus californicus (S.Watson) Greene
* Streptanthus callistus J.L.Morrison – Mt. Hamilton jewelflower
* Streptanthus campestris S.Watson – Southern jewelflower
* Streptanthus carinatus C.Wright ex A.Gray – Lyreleaf jewelflower
* Streptanthus cooperi (S.Watson) Al-Shehbaz
* Streptanthus cordatus Nutt. – Heartleaf twistflower
* Streptanthus coulteri (S.Watson) Greene
* Streptanthus crassicaulis Torr.
* Streptanthus cutleri Cory – Cutler's jewelflower
* Streptanthus diversifolius S.Watson – Variableleaf jewelflower
* Streptanthus drepanoides Kruckeb. & J.L.Morrison – Sicklefruit jewelflower
* Streptanthus farnsworthianus J.T.Howell – Farnsworth's jewelflower
* Streptanthus fenestratus (Greene) J.T.Howell – Tehipite Valley jewelflower (Fresno County, California)
* Streptanthus flavescens Hook.
* Streptanthus glandulosus Hook. – Bristly jewelflower, common jewelflower (Mendocino County to San Luis Obispo County, California)
** Streptanthus glandulosus subsp. albidus (Greene) Al-Shehbaz, M.S.Mayer & D.W.Taylor – Metcalf Canyon jewelflower (Santa Clara County, California), endangered
** Streptanthus glandulosus subsp. arkii M.S.Mayer
** Streptanthus glandulosus subsp. glandulosus
** Streptanthus glandulosus var. hoffmanii Kruckeb.
** Streptanthus glandulosus subsp. josephinensis Al-Shehbaz & M.S.Mayer
** Streptanthus glandulosus subsp. niger (Greene) Al-Shehbaz, M.S.Mayer & D.W.Taylor – Tiburon jewelflower (Marin County, California), endangered
** Streptanthus glandulosus subsp. pulchellus (Greene) Kruckeb.
** Streptanthus glandulosus subsp. raichei M.S.Mayer
** Streptanthus glandulosus subsp. secundus (Greene) Kruckeb.
** Streptanthus glandulosus subsp. sonomensis (Kruckeb.) M.S.Mayer & D.W.Taylor
* Streptanthus glaucus (S.Watson) Jeps.
* Streptanthus gracilis Eastw. – Alpine jewelflower
* Streptanthus hallii (Payson) Jeps.
* Streptanthus hammittii (S.Boyd & T.S.Ross) Al-Shehbaz, Hammitt's clay-cress (Riverside and San Diego counties, California)
* Streptanthus hesperidis Jeps.
* Streptanthus heterophyllus Nutt.
* Streptanthus hispidus A.Gray – Mt. Diablo jewelflower (Contra Costa County, California)
* Streptanthus howellii S.Watson – Howell's jewelflower
* Streptanthus hyacinthoides Hook. – Sandhill twistflower (Texas, Arkansas, Louisiana, Oklahoma, Nebraska)
* Streptanthus inflatus (S.Watson) Greene
* Streptanthus insignis Jeps. – Plumed jewelflower
* Streptanthus juneae N.Jensen (San Bernardino Mountains, San Bernardino County, California)
* Streptanthus lasiophyllus (Hook. & Arn.) Hoover
* Streptanthus lemmonii S.Watson
* Streptanthus longirostris (S.Watson) S.Watson – longbeak streptanthella, streptanthella (western US and northwestern Mexico)
* Streptanthus longisiliquus G.Clifton & R.E.Buck – Longfruit jewelflower
* Streptanthus maculatus Nutt. – Clasping jewelflower, type species, (Arkansas, Oklahoma, Texas)
* Streptanthus major (M.E.Jones) Jeps.
* Streptanthus medeirosii N.Jensen (Tehachapi Mountains, Kern County, California)
* Streptanthus morrisonii F.W.Hoffm. – Morrison's jewelflower
* Streptanthus oblanceolatus T.W.Nelson & J.P.Nelson
* Streptanthus oliganthus Rollins – Masonic Mountain jewelflower
* Streptanthus petiolaris A.Gray
* Streptanthus pilosus (S.Watson) Jeps.
* Streptanthus platycarpus A.Gray
* Streptanthus polygaloides A.Gray – Milkwort jewelflower
* Streptanthus purpureus Sánchez Mata, Fuente, Rufo, Nuria Rodr. & Amils
* Streptanthus simulans (Payson) Jeps.
* Streptanthus squamiformis Goodman
* Streptanthus tortuosus Kellogg – Mountain jewelflower, shieldplant
* Streptanthus vernalis R.O'Donnell & R.W.Dolan – Early jewelflower
* Streptanthus vimineus (Greene) Al-Shehbaz & D.W.Taylor