Etymology: Trifolium: from tres for three; folium for leaves
Plants: erect, annual/biennial, 8"-20" tall forb with many branches; stems with close hairs
Leaves: palmately 3-parted; leaves stalked, all leaflets stalkless
Flowers: yellow, 5-parted, 1/4" long, very short-stalked, keel (top petal) grooved, calyx 2-lipped; inflorescence a short cylindrical, stalked, head-like cluster from the upper leaf axils; blooms May-Sept.
Habitat: disturbed sites
Conservation Status: Introduced - naturalized

USDA Plants Database: Federal Distribution and detailed information including photos David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions