Potentially arborescent, bushy or broad-crowned, microphyllidious shrubs flowering when (1—)2—8 (once reported -18) m tall, the young stems, lf-axes and peduncles pilosulous with shorter curved and long ± spreading, gray or bronze hairs to 0.2-1.2 mm, rarely glabrescent, the multifoliolate lvs strongly bicolored, the lfts above dull lurid gray and papillate or papillate-puberulent or dull dark brown and smooth, commonly but not invariably pilosulous or puberulent beneath, the relatively few-fld capitula of ± silky fls at first solitary or fasciculate in primary lf-axils, later pseudoracemose along short efoliate (but not thatched) terminal or lateral axes, the densely silky-pilose pods erect; phyllotaxy distichous. Stipules firm, ovate or lanceolate 1-6.5 x 0.6-2 mm, usually dorsally pubescent and weakly nerved when young, becoming dry, pallid, glabrate, tardily deciduous. Lf-formula iii-xi (—xiii)/l 6—36; lf-stks of primary lvs 1.2-9(-14) cm, the petiole including pulvinus 3.5—14(—16) mm, at middle 0.4-1.2 mm diam, the longer interpinnal segments 3—10(—11) mm; pinnae accrescent from base upward or the furthest pair sometimes abruptly shorter than those next below, the rachis of longer ones (1—)1.2—6(—8) cm, the longer interfoliolar segments 0.4—1.4(—1.7) mm; lfts usually decrescent near each end of rachis and subequilong between, the pulvinules 0.1-0.3 x 0.2-0.35 mm; lft-blades oblong to broad-linear from semicordate base, straight or almost so, broadly obtuse or depressed-deltate at apex, those near mid-rachis 3.4-7.5 x l-1.9(-2.4) mm, (2.2-)2.4-4- (-4.6) times as long as wide; venation of lfts externally simplified, the midrib scarcely excentric, ventrally immersed, finely prominulous dorsally, often simple, sometimes faintly branched on each side, the posterior primary nerves usually imperceptible. Peduncles 1-3 per node, 4-18 mm, at base discolored quasi-pulvinulate, ebracteate, disarticulating if not fertile but commonly retained on the branch by entangled filaments; capitula 5—9(—10)-fld, the receptacle including very short terminal pedestal ±1-2 mm diam; floral bracts 0.3-1.5 mm, persistent; pedicels (sometimes imperceptible in external view) 0.3-1 x 0.5-1.1 mm; fls either homomorphic as to androecium and then either staminate or bisexual, with short androecial tube and lacking nectary, or dimorphic, one central fl broader but scarcely longer than the peripheral ones, staminate, with long-exserted androecial tube and lobed intrastaminal disc 0.45-1.5 mm, the perianth of either sort of flower either 4- or 5-merous, the calyx glabrous or puberulent distally, the corolla at least thinly, commonly densely white-silky externally; PERIPHERAL FLS: calyx campanulate or turbinate-campanulate (1.4-) 1.8-3.2 x 1.2-2.3 mm, weakly 8-10-nerved, the subulate, ± incurved teeth 0.35-0.8 mm; corolla white, 4.5-7.1 mm, the ovate-lanceolate lobes (1.2-)1.6-2.7 mm, commonly spreading-recurved at late anthesis; androecium (8-) 10-15-merous, ±30-39 mm, the tube 2-3.4 mm, the tassel pink-carmine; stemonozone obscure; ovary at anthesis silky-barbate; TERMINAL FL: sessile or almost so, the calyx hemispherical, the white staminal tube 10-12.5 mm, at orifice 3-4 mm diam, the free filaments ± twice as many as those of peripheral fls. Pods in broad profile 4.5-12 x 1.1-2.3 cm, silky- pilose overall with erect, either white or partly bronze hairs, the sutural ribs ±4.5-6 mm wide in dorsal view, the sublignescent valves densely subhorizontally venulose with coarse subcontiguous fibers, at maturity convex over the 2-5 seeds; seeds (few seen) ±6.5-12 x 4—8 mm, the testa smooth, brown dark-speckled, finely pleurogrammic.