Draba sierrae
Draba sierrae is an uncommon species of flowering plant in the family Brassicaceae known by the common name Sierra draba. It is endemic to the central Sierra [Nevada (U.S.)|Sierra Nevada] of California, where it is known from just a few occurrences in rocky alpine habitat. It is a perennial herb forming small, dense cushions of very hairy, oblong or lance-shaped grayish leaves each under centimeter long. The erect inflorescence bears several yellow flowers. The fruit is a flat, twisted, oval-shaped silique under a centimeter long containing a few unwinged seeds.