Shrubs, erect. Branchlets obviously ribbed, densely clothed with adpressed hairs. Leaves digitately 3-foliolate; stipules ovate-lanceolate, ca. 2 cm, adpressed hairy, apex long acuminate, deciduous; petiole 2.5-4.5 cm, narrowly winged, adpressed hairy; petiolules 1-2 mm, densely hairy; leaflets papery, subequal; terminal leaflet oblong to oblong-lanceolate, 6.5-10 × 1.8-3.5 cm, abaxial surface with black sessile glands, glabrous or almost glabrous except for veins, basal veins 2, lateral veins 7-9 pairs, base unequal at 2 sides, apex acuminate. Raceme axillary, 3-5.5 cm; bracts lanceolate, 6-8 mm, deciduous; peduncle ca. 1.5 mm. Flowers clustered. Calyx 5-lobed, densely adpressed hairy; lobes linear-lanceolate, much longer than tube, densely covered with black glands, lower one longest, ca. 1 cm. Corolla yellowish green, petals subequal; standard oblong, ca. 8 mm, base acuminate, auricles toothlike; wings narrowly elliptic, long clawed, one with acute auricle; keel elliptic, slightly curved, wider than wings, long clawed, apex obtuse. Legume elliptic, purple, ca. 8 × 6 mm, pubescent, inflated, with dense black glands. Seeds 1 or 2, black, suborbicular, ca. 1.5 mm in diam. Fl. and fr. Sep-Oct.
Home