Streptanthus glandulosus

Streptanthus glandulosus is a species of flowering plant in the mustard family known by the common name bristly jewelflower.[1] 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.[2] The complex includes subspecies previously considered separate species, such as the rare Tiburon jewelflower (ssp. niger) endemic to the San Francisco Bay Area.[3] 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 to 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 most 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. secundus
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Brassicaceae
Genus: Streptanthus
Species:
S. glandulosus
Binomial name
Streptanthus glandulosus

References
  1. "Streptanthus glandulosus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 4 December 2015.
  2. 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.
  3. Flora of North America
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.