Streptanthus glandulosus subsp. niger

Streptanthus glandulosus subsp. niger
Tiburon jewelflower
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Brassicaceae
Genus: Streptanthus
Species:
S. glandulosus
Subspecies:
S. g. subsp. niger
Trinomial name
Streptanthus glandulosus subsp. niger
(Greene) Al-Shehbaz, M.S.Mayer & D.W.Taylor (2008)
Synonyms[1]
  • Euklisia nigra (Greene) Greene (1904)
  • Streptanthus glandulosus var. niger (Greene) Munz (1958)
  • Streptanthus niger Greene (1886)

Streptanthus glandulosus subsp. niger is an endangered subspecies of flowering plant within the family Brassicaceae.[1] Like other genus members, this herb has wavy petal margins with perimeter calluses that discourage larval herbivory.[2] This plant is endemic to the Tiburon Peninsula[3] of Northern California, and occurs at elevations below 150 m on serpentine grasslands.[4] The common name for this subspecies is Tiburon jewelflower[5] or black jewelflower. This annual herb blooms in May and June and displays dark purple sepals. The etymology of this genus scientific name derives from the Greek word streptanthus, meaning twisted flower, with reference to the notable wavy margins of the petals. The subspecies name niger relates to the color of the seeds being black, although an alternate account cites the dark color of the petals as the source of the appellation.

  1. ^ a b Streptanthus glandulosus subsp. niger. Plants of the World Online. Retrieved 13 December 2023.
  2. ^ Kruckeberg & Morrison 1983 Madroño 30:230–244
  3. ^ Marinero Estates Environmental Impact Report, Tiburon, California, Earth Metrics Inc., prepared for the city of Tiburon, Ca (1989)
  4. ^ Jepson Manual, University of California Press (1993)
  5. ^ USDA, NRCS (n.d.). "​Streptanthus niger​". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 4 December 2015.