Senegalia membranacea

Senegalia membranacea Britton & Rose, sp. nov
A vigorous clambering vine, very prickly. Leaves 2-3 dm. long, the petiole and rachis prickly; pinnae 6-8 pairs; leaflets 25-40 pairs, oblong, 6-12 mm. long, glabrous except a tuft of hairs on the midvein beneath, acute, membranous, very pale beneath, the midvein excentric; legume 16 cm. long, 2.5 cm. broad, glabrous; seeds flat, black, short-oblong, 10-11 mm. long.
Ramulatero, Veracruz, April, 1922, C. A. Purpus 8716.