Streptanthus

Life-forms

Classification System: APG IV

Superregnum: Eukaryota
Cladus: Orthokaryota
Cladus: Neokaryota
Cladus: Photokaryota
Cladus: Diaphoretickes
Cladus: CAM
Regnum*: Archaeplastida
Regnum: Plantae
Regnum*: Viridiplantae
Cladus: Streptophyta
Cladus: Phragmoplastophyta
Cladus: Embryophyta
Cladus: Polysporangiophyta
Divisio*: Tracheophyta
Cladus: Eutracheophyta
Cladus: Euphyllophytina
Cladus: Megaphylla
Cladus: Radiatopses
Cladus: Lignophyta
Cladus: Metalignophyta
Diviso*: Spermatophyta
Classis*: Angiospermae
Cladus: Mesangiospermae
Cladus: Eudicota
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Brassicales

Familia: Brassicaceae
Tribus: Thelypodieae
Genus: Streptanthus
Species: S. amplexicaulis – S. anceps – S. barbatus – S. barbiger – S. barnebyi – S. batrachopus – S. bernardinus – S. brachiatus – S. bracteatus – S. breweri – S. californicus – S. callistus – S. campestris – S. carinatus – S. cooperi – S. cordatus – S. coulteri – S. crassicaulis – S. cutleri – S. diversifolius – S. drepanoides – S. farnsworthianus – S. fenestratus – S. flavescens – S. glandulosus – S. glaucus – S. gracilis – S. hallii – S. hammittii – S. hesperidis – S. heterophyllus – S. hispidus – S. howellii – S. hyacinthoides – S. inflatus – S. insignis – S. lasiophyllus – S. lemmonii – S. longirostris – S. longisiliquus – S. maculatus – S. major – S. morrisonii – S. oblanceolatus – S. oliganthus – S. petiolaris – S. pilosus – S. platycarpus – S. polygaloides – S. purpureus – S. simulans – S. squamiformis – S. tortuosus – S. vernalis – S. vimineus
Source(s) of checklist:

Koch, M.A. et al. 2019. Streptanthus in BrassiBase Tools and biological resources to study characters and traits in the Brassicaceae. Published online. Accessed: 2019 Jun 14.

Unresolved names: S. albidus – S. niger
Name

Streptanthus Nutt.
Synonyms

Heterotypic
Agianthus Greene
Cartiera Greene
Caulanthus S. Watson
Disaccanthus Greene
Euklisia Rydb. ex Small
Guillenia Greene
Icianthus Greene
Mesoreanthus Greene
Microsemia Greene
Microsisymbrium O.E. Schulz
Mitophyllum Greene (1904), non O.E. Schulz (1933)
Pleiocardia Greene
Sibaropsis S. Boyd & T.S. Ross
Stanfordia S. Watson
Streptanthella Rydb.

References

Nuttall, T., 1825. J. Acad. Nat. Sci. Philadelphia 5(Sig. 4): 134.

Links

Koch, M.A. et al. 2019. Streptanthus in BrassiBase Tools and biological resources to study characters and traits in the Brassicaceae. Published online. Accessed: 2019 Jun 14.
International Plant Names Index. 2019. Streptanthus. Published online. Accessed: Jun 14 2019. Reference page.
Govaerts, R. et al. 2019. Streptanthus in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2019 Jun 14. Reference page.
Tropicos.org 2019. Streptanthus. Missouri Botanical Garden. Published online. Accessed: 14 Jun 2019.
USDA, ARS, Germplasm Resources Information Network. Streptanthus in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: Twistflower, Jewelflowers, Californian Wild Cabbage
Streptanthus is a genus of plants within the family Brassicaceae.[2] There are 58 known species within the genus Streptanthus, distributed through the western and south-central United States and northern Mexico.[1] The common names for this genus are twistflower[3] 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.[1] 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)[4]
Streptanthus glandulosus subsp. albidus (Greene) Al-Shehbaz, M.S.Mayer & D.W.Taylor – Metcalf Canyon jewelflower (Santa Clara County, California), endangered[5]
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)[6]
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)[6]
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

References

Streptanthus Nutt. Plants of the World Online. Retrieved 12 December 2023.
Kruckeberg & Morrison 1983 Madroño 30:230–244
NRCS. "Streptanthus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 4 December 2015.
David Rogers, The Double Cone Register, Vol IX, no. 1, Spring, 2006
Andy Kratter, Summary of Rare Plant Search along the Western California University Access Road Alignment, Los Gatos, County of Santa Clara, California, prepared for City of Los Gatos and State of California Environmental Clearinghouse, Earth Metrics Inc. Report 7965.W0, May, 1989
Nick Jensen "Two New Species of Streptanthus (Brassicaceae) in Southern California, and Notes on their Conservation," Madroño, 67(1), 19-34, (23 April 2020) https://doi.org/10.3120/0024-9637-67.1.19