Hypocalyptus

Shrubs, or rarely trees, up to +/- 3(-6) m tall, generally stiff in habit. Leaves digitately 3-foliolate, petiolate, stipulate; leaflets oblanceolate to broadly obovate, entire. Flowers violet, 2 to more than 50 in terminal racemes or racemose panicles; bracts setaceous, usually caducous. Calyx brown, membranous, with campanulate tube, intruse at base; upper 2 lobes +/- united to +/- 1 mm from apices; lower lobes deltoid to narrowly triangular. Petals: vexillum broadly ovate, reflexed, shortly clawed, with callus on inner side of claw; wings oblong-spatulate, eared at base, with short claw bent at right angle to limb; keel incurved, shorter than vexillum, with rather prominent upper ear, shortly clawed. Stamens monadelphous; tube closed; anthers unequal, alternately versatile and basifixed. Ovary subsessile, curved, with few to many ovules, glabrous; style incurved, with small, capitate stigma. Pod linear, flat or sometimes somewhat inflated, 2-valved, with upper suture thickened. Seeds 5 or 6, dark, with a whitish, annular, collar-like strophiole. x= 10 (B-chromosomes).