Stylosanthes humilis Kunth

Herbs, often suffruticose; stems ascending to prostrate, to 0.5 m tall, branched, puberulent to hirsute. Leaflets lanceolate to elliptic, mucronate, acute, the adaxial surface and the margins sparsely setose to glabrous, 3-4 pairs of conspicuous nerves; terminal leaflet 5-15(-20) mm long, 2-4 mm wide; petioles 2.5-5.0 mm long, canaliform, setaceous, the rachis 1.5-4.0 mm long; stipular sheath 3-5 mm long, short bristly, 5-7 nerved, the teeth subulate, 2.5-3.5 mm long. Inflorescence spicate, 3-4 flowered; bracts 1-3 foliolate, the sheath 2.5-4.5 mm wide, bristly, 5-9 nerved, the teeth 2-3 mm long; outer bracteole 2.5-3.0 mm long, the apex ciliate; axis rudiment none; inner bracteole 1, 2.0-2.5 mm long, the apex ciliate. Flowers yellow; calyx tube 4-5 mm long, the lobes acute, ca. 1.5 mm long; standard suborbiculate, spurred within at the base, 3-4 mm long; wings 3-4 mm long, clawed and auriculate at the base; keel petals 3.0-3.5 mm long, falcate. Fruit a loment, 1.5-2.5(-4.0) mm long, 1.5-2.5 mm wide, reticulate nerved, usually puberulent, rarely pilose, only the distal articulation fertile, the beak strongly uncinate to coiled, 1.5-3.5(-5.5) mm long. Chromosomes n = 10.

It is a tropical plant.