Arachis pintoi Karpov. & W.C. Gregory

Perennial herb; stems creeping. Leaves paripinnate, alternate, 4-foliolate; petioles 3−4 cm long; stipules membranous, apiculate, persistent and veined, linear-lanceolate, slightly falcate, apex acuminate, ciliate, 15−20 mm long; rachis up to 1 cm long. Leaflets opposite; petiolules ca. 1 mm long; lamina ovate or elliptic, 3−4 by 1−2 cm, apex obtuse or acute and mucronate, base rounded, margin entire, glabrous or sparsely pilose beneath. Flower solitary; pedicels 5−7 cm long, axillary, 1−1.5 cm long; bracts 10−12 by 2−3 mm, ovate-lanceolate, apex acuminate, base narrowly rounded; bracteoles lanceolate, 1−2 cm long. Calyx 2-lipped, pilose, up to 6 cm long; tube 1−2 cm long; lobe 5−6 mm long. Petals yellow; standard rounded, 10−15 by 8−10 mm, apex emarginate, base rounded; wings obovate to oblique, 7−10 by 4−6 mm; keel long ovate, inflexed, apex acuminate to beaked, 7−10 by 1−2 mm. Stamens 7−10 mm long, glabrous. Ovary oblong. Pods 11−12 by 6−7 mm. Seeds not seen.