Flora of North America species comparison

Varieties 2 (1 in the flora).

Both subspecies of Crotalaria incana are native to southeast Africa, where they are partially sympatric. Subspecies purpurascens (Lamarck) Milne-Redhead occurs also in Madagascar. Plants of the latter are characterized as shrubs or creeping herbs, the stems with long, yellow-brown, spreading hairs (versus shorter, more appressed hairs in subsp. incana), inflorescence bracts usually 4–10 (versus 1–3) mm, and calyx lobes pilose (versus glabrate).

(Discussion copyrighted by Flora of North America; reprinted with permission.)