Streptanthus glandulosus subsp. niger

(Greene) Al-Shehbaz

Novon 18: 280. 2008.

Basionym: Streptanthus niger Greene Bull. Torrey Bot. Club 13: 141. 1886
Synonyms: Euklisia nigra (Greene) Greene Streptanthus glandulosus var. niger (Greene) Munz
Treatment appears in FNA Volume 7. Treatment on page 714. Mentioned on page 712.

Stems 2–11 dm, glabrous throughout. Cauline leaves: blade conduplicate distally, margins entire, surfaces glabrous. Racemes not secund; rachis flexuous. Fruiting pedicels 10–32 mm, glabrous. Flowers: sepals dark purple-black, 7–8 mm, glabrous; petals dark purple, 10–12 mm; adaxial filaments 8–10 mm. Fruits divaricate-ascending, straight; valves glabrous. 2n = 28.


Phenology: Flowering May–Jul.
Habitat: Serpentine grasslands

Discussion

Of conservation concern.

Subspecies niger is known from the Tiburon Peninsula, Marin County.

Selected References

None.

Lower Taxa

None.