Liane, sometimes many-stemmed woody shrub/scrambler, ascending trees and climbing into canopy. Branchlets with relatively few and scattered prickles, hairy with a mixture of short and moderately long hairs. Stipules inconspicuous. Leaves bipinnate: petiole 2–9 cm long, a raised gland usually present shortly above pulvinus; rachis 2–18 cm long, with or without scattered prickles below, densely clothed with long straight and crisped hairs on upper surface (also on pinna-rachis), with a gland usually present at or near junction of each of top 1 or 2 pairs of pinnae; pinnae 2–9 pairs; pinnules 16–28 pairs per pinna, obliquely oblong, 6–17 mm long, (1.5–) 2–4 mm wide, acute, often with scattered hairs on lower surface, with midrib excentric basally and nearly central above. Inflorescences capitate, axillary, racemosely or paniculately arranged. Flowers yellowish white, reddish in bud; calyx minutely pubescent. Pods straight or twisted, 6–8 cm long, 1.2–1.8 cm wide, coriaceous, tardily dehiscent; margins irregularly constricted. Seeds oblong, 9–10 mm long, 4–4.5 mm wide, c. 3.5 mm thick, blackish; areole inconspicuous.
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