Shrub; extremities rachis of the leaves and peduncles thinly pubescent puberulous or glabrate. Leaves 5–10 in. long; leaflets usually 6–9-jugate, broadly lanceolate ovate or oblong-lanceolate, acute or acuminate, rounded at the base, glabrous and reticulate above, paler with sparse adpressed short hairs or glabrescent beneath, 1 1/2–2 1/2 in. long, 1/2–1 in. broad, shortly petiolulate; common petiole thinly pubescent or nearly glabrous, with a linear or subconical gland between the leaflets, which would seem to be occasionally either deciduous or obsolete. Stipules half-cordiform or -reniform, sessile, 1/2– 3/4 in. long, deciduous or partially persisting. Flowers in simple or branched corymbs or short racemes, terminal and from the upper axils, forming irregular leafy or much bracteate panicles at the ends of the branches. Bracts pubescent, the lower broadly rotundate, subcordate, apiculate, the upper ovate, cymbiform, with thickened gland-like curved bracteoles; the principal branches of the inflorescence subtended by rudimentary or obsolete leaves, the broad stipules of which are often fully developed. Pedicels 1/2–1 1/2 in., pubescent or puberulous. Sepals very unequal, the two outer much smaller, thinly pubescent, three inner subpetaloid. Petals clawed, the posterior smaller; anterior exceeding the stamens. Three anterior anthers much larger, linear, curved, 3–4 lines long; four intermediate dehiscing by terminal pores, three posterior abortive, cordate or ovate. Ovary silky-pubescent. Legume not seen.