Perennials; glabrous or sparsely pubescent. Rhizomes (tuberiform, fragile), with ovoid to oblong or cylindrical nodal swellings, slender, 2-5 mm diam., (fleshy). Stems erect, unbranched, 0.5-2(-3) dm, glabrous or sparsely pubescent distally. Rhizomal leaves simple or 3 (or 5)-foliolate, (3-)4-20(-25) cm, leaflets petiolulate or subsessile; petiole (2-)3-18(-21) cm; lateral leaflets (when present) petiolulate to subsessile, blade similar to terminal, sometimes smaller; terminal leaflet (subsessile or petiolule 0.2-3 cm), blade (simple leaf or terminal leaflet) reniform to suborbicular or ovate to oblong, (0.9-)1.3-4(-5.2) cm × (8-)12-50(-70) mm, base cordate to obtuse, margins crenate, dentate, or 5-7-lobed, (apiculae terminating teeth or lobes, surfaces glabrous). Cauline leaves 1-3, 3 (or 5)-foliolate, (appearing palmate), petiolate, leaflets petiolulate or sessile; petiole (0.2-)0.5-2(-3) cm, base not auriculate; lateral leaflets sessile, blade similar to terminal, smaller; terminal leaflet petiolulate or sessile, blade broadly ovate to oblong or linear, (0.5-)1-3.5(-6) cm, margins usually entire or dentate, rarely lobed. Racemes ebracteate. Fruiting pedicels ascending to divaricate, 10-35 mm. Flowers: sepals oblong, 3.5-5 × 1.5-2 mm, lateral pair saccate basally; petals usually purple to pale pink, rarely white, obovate, 10-15 × 4-7.5 mm, (not clawed, apex rounded); filaments: median pairs 5-8 mm, lateral pair 3.5-5 mm; anthers oblong, 1.5-2 mm. Fruits linear, 2.5-5.6 cm × 2-2.3 mm; ovules 8-16 per ovary; style 4-8 mm. Seeds dark brown, oblong, 2-2.5 × 1.4-1.6 mm.
Home