Etymology: Crotalaria: from Greek crotalon, meaning "rattle," referring to loose seeds inside inflated pod
Plants: erect, annual, 4"-16" tall, hairy forb
Leaves: hairy, almost stalkless, undivided, linear to lance-shaped
Flowers: yellow, 5-parted, 1/8"-1/2" long; inflorescence with 2-4 short-stalked flowers per cluster (raceme); blooms June-Sept.
Fruits: oblong, inflated, and mostly stalkless pod
Habitat: dry; disturbed sites
Conservation Status: Special Concern