Shrubs, scandent, 2-5 m long. Stems grayish yellow, splitting, glabrous or puberulous. Leaves with 5 leaflets; leaflet blades lanceolate, oblong, or narrowly oblong, 5-15 X 1.5-6 cm, abaxially grayish glabrous, sparsely puberulous, or yellow hirsute, adaxially glabrous, midvein abaxially raised and adaxially sunken, secondary veins 6-9 on each side of midvein, reticulate veins evident on both surfaces or only abaxially, base rounded or sometimes subcordate, apex acute, acuminate, or rarely obtuse. Panicles terminal, 10-25(-40) cm, yellow puberulous; flowering branchlets 6--15 cm, spreading, nodes with 1 flower and close together. Flowers 1.2-2.4 cm; corolla purple; standard broadly ovate, outside silvery to rusty sericeous, without basal calluses, base subcordate; ovary linear, tomentose, with 8 or 9 ovules. Legume linear to oblong, 7-12 X 1.5-2 cm, flat, gray tomentose, with 3-5 seeds; valves thin or woody. Seeds oblong or subglobose, ca. 8 X 6 mm. |