Indigofera dumbeana M. Pignal & L. P. Queiroz

Small tree or shrub 3‒5 m high, branches mostly plagiotropic and horizontal (Veillon 7138, P), young stems flexuous, quadrangular or terete, internodes 10‒15 mm long (but c. 5 mm long for the flexuous parts); indumentum of young branches and leaves of straight, white, adpressed T-shaped hairs. Stipules 1‒1.5 × c. 0.2 mm, narrowly triangular to falciform, pubescent. Leaves 10.5‒11.3 cm long, pinnate, 15‒19-foliolate; petiole 10‒15 mm long, furrowed, sparsely pubescent; rachis yellowish to light brown, strongly furrowed, non articulated and with thin appressed hairs, thick brown multicellular hairs (colleters) at the leaflets attachments, segments at the leaflets attachments 10‒14 mm long; stipels 0.2‒0.3 mm long, setiform, early caducous, mostly absent; leaflets opposite, secondary veins visible on both sides of the lamina, upper and lower surfaces with dense, white hairs; terminal leaflet 27‒34 × 15‒19 mm, ovate to obovate, apex rounded to slightly emarginate, mucronate, base acute, secondary veins 7‒12 pairs, lateral leaflets 20‒17 × 12‒14 mm, obovate, apex slightly emarginate, mucronate, secondary veins 6‒7 pairs, petiolules 1.2‒2 × 0.4‒1.5 mm, dark brown on dry specimens, not furrowed. Inflorescence a c. 50 mm long raceme, with more than 40 flowers; peduncle pubescent, quadrangular, c. 10 mm long; pedicel c. 1.5 × 0.2 mm. Flower c. 6.5 mm long; calyx c. 1.5 mm long, campanulate, asymmetrical, 5-lobed, the vexillary (upper) lobes shorter and shallow deltoid, the carinal (lower) lobe longer and acuminate; petals white; standard petal c. 5–6 × 4.5 mm wide, obovate, apex slightly emarginate, pubescent outside with apressed T-shaped hairs; wing petals c. 4 × 1.5 mm, slightly shorter than the keel, narrowly obovate to oblong-linear, apex rounded; keel petals 5–5.5 × 2 mm, obovate, apex rounded, valvately connate along the lower margin halfway to the tip; androecium diadelphous (9 stamens fused and the vexillary one free), staminal tube c. 6 × 1.5 mm; ovary c. 5-ovulate, c. 5 mm long, sessile, glabrous, style c. 2.5 mm long, hook-shaped at apex, stigma capitate. Pod c. 38 × 3 mm, straight, linear, apex acuminate, indehiscent; valves brown, pubescent with appressed white T-shaped hairs. Seeds 5–7, c. 3.5 × 5 mm, ellipsoid; testa black.

Indigoferadumbeana grows in lowland forests, mostly in wood edges areas (fide Veillon 7138, P and Veillon 7482, P).