shrubby, rigid, erect, much-branched, subglabrous; branches virgate, angle-ribbed; leaves on very short petioles, trifoliolate; leaflets lanceolate-linear or subspathulate, acute, channelled, coriaceous, glabrous; stipules obsolete or tooth-like; racemes subsessile, scarcely longer than the leaf, few-flowered; calyx canescent, 5-toothed; petals pubescent; legumes terete, straight, glabrous. A densely branched, leafy shrub, with very pale bark and foliage; the young branches long and rodlike, very erect. Petioles sometimes scarcely any, sometimes 2–3 lines long. Leaflets 5–10 lines long, 1/2–1 line wide, mostly acute or subacute. Legumes 1 1/4 inch long, cylindrical or slightly nodose. Much more leafy than I. denudata, with longer and narrower leaflets, &c.
