Streptanthus glandulosus is a species of flowering plant in the mustard family known by the common name bristly jewelflower.[2] It is native to California and southwestern Oregon, where it grows in many types of habitat, including grassland, chaparral, and woodlands. Genetic and other analyses indicate that it is a species complex with ten subspecies which evolved as populations were isolated from each other.[3] The complex includes subspecies previously considered separate species, such as the rare Tiburon jewelflower (ssp. niger) endemic to the San Francisco Bay Area.[4] Plants in the complex are variable. In general they are annual herbs growing 10 centimeters to over a meter in height. They may be hairless hairy to bristly. The ephemeral basal leaves have blades borne on winged petioles. Leaves higher on the stem are linear to lance-shaped and clasp the stem at their bases. Flowers occur at intervals along the upper stem. Each flower has an urn-shaped calyx of sepals one-half to over one centimeter long which can be almost any color from white to yellowish to pink or purple to nearly black. Purple, white, or purple-veined white petals emerge from the tip. The fruit is a straight or curving silique up to 11 centimeters long.
| Streptanthus glandulosus | |
|---|---|
| |
| Streptanthus glandulosus subsp. glandulosus | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Brassicales |
| Family: | Brassicaceae |
| Genus: | Streptanthus |
| Species: | S. glandulosus
|
| Binomial name | |
| Streptanthus glandulosus Hook. (1836)
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| Subspecies and varieties[1] | |
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Ten; see text | |
| Synonyms[1] | |
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Subdivisions
editTen subspecies and varieties are accepted:[1]
- Streptanthus glandulosus subsp. albidus (Greene) Al-Shehbaz, M.S.Mayer & D.W.Taylor
- 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
- 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
References
edit- ^ a b c Streptanthus glandulosus Hook. Plants of the World Online. Retrieved 13 December 2023.
- ^ NRCS. "Streptanthus glandulosus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 4 December 2015.
- ^ Mayer, M. S. and L. Beseda. (2010). Reconciling taxonomy and phylogeny in the Streptanthus glandulosus complex (Brassicaceae). Annals of the Missouri Botanical Garden 97:1 106-116.
- ^ Flora of North America