Unarmed tree or shrub, the branchlets tomentulose when young becoming sub-glabrous, moderately lenticellate, terete.-Leaves 2-ranked, large, bipinnate, the pinnae normally 3-4 pairs opposite on the rachis, the leaflets 3-5 (mostly 4) pairs per pinna; petiole about 2-3 cm. long, terete, tomentulose, becoming subglabrous, bearing a sessile, conic gland slightly below insertion of the lower pair of pinnae; rachis about 6 cm. long, similar to the petiole, eglandular or with a solitary gland at insertion of' terminal pinnae; pinnular rachis 2-8 cm. long, puberulent or sub-glabrous, bearing a conic gland apically just below insertion of the terminal pair of leaflets; leaflets ovate or elliptic, 15-50 mm. long and 7-25 mm. wide, broadly and somewhat inequilaterally acute basally, acute apically (occasionally rounded on same leaf), dull, densely canescent-puberulent below (at least in young leaflets) and to a lesser extent above, lighter below than above; stipules caducous. Inflores-cence thrice compound, consisting of several terminal and subterminal racemes of few-fasciculate pedunculate heads; peduncles about 1 cm. long, tomentose, ebracteate except just below the head; head orbicular, less than 1 cm. in diameter, dense, beset (in bud) with pubescent, peltate bracts. Flowers whitish, sessile, small; calyx funnelform-campanulate, little more than 1 mm. long puberulent on the teeth, the 5 teeth about as broad as long; corolla of 5 linear-oblong or linear-spatulate petals, these about 2 mm. long, glabrous; stamens 10, free, 3-4 mm. long, glabrous, the anthers ovate, somewhat less than 1 mm. long, pubescent or glabrous; ovary inequilateral, glabrous, short-stipitate, the style stout, the stigma obliquely truncate. Legume broadly linear, about 12 cm. long and almost 3 cm. wide, flat and thin, glabrous.
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