Streptanthus tortuosus is a biennial or short lived perennial plant in the mustard family (Brassicaceae) known by the common names shieldplant, shieldleaf, and mountain jewelflower.
It is native to the mountains of northern and central California, its distribution extending just into Oregon and Nevada. It grows in rocky and sandy areas in forests and woodland habitat.
It is highly variable in appearance and some authors divide it into many subtaxa. In general, it is a biennial or perennial herb growing ...