Isatis tinctoria (Dyer's Woad) is a species of biennial herb in the family crucifers. They have a self-supporting growth form. They are native to Western North America. They have simple, broad leaves. Flowers are visited by (page not found), Attalus minimus, Grammoptera ruficornis, and diamondback moth. Individuals can grow to 0.72 m.
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