false indigo

Any of various North American perennial flowering plants of the genus Baptisia in the pea family (Fabaceae), having clover-like foliage and producing tall, upright racemes of showy pea-like blossoms in shades of violet-blue, yellow, or white; historically used by Indigenous peoples and early colonists as a substitute for true indigo dye.

Any of several deciduous flowering shrubs or subshrubs of the genus Amorpha in the pea family (Fabaceae), native to North America and bearing pinnate leaves and dense, terminal spikes of small, dark purple flowers with protruding orange-gold anthers.