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A herb that keeps growing from year to year. It has a few branches. It is 15-30 cm long. It has turnip shaped roots. These are 1.5 cm across by 3 cm long. The stems are slender. They can have a white coating. The leaves have one leaflet. They are 2-10 cm long by 0.5-2 cm wide. They are broadly sword shaped and hairy above. The flowers are greenish-yellow. The pods are 6-7 mm long by 4-5 mm wide. They are oblong and covered with rusty hairs. The seeds are greenish-brown. They are speckled with dark purple. They are 2.5 mm long by 1.5 mm wide.
Leaves 1-foliolate; leaflet (1.5)2.2–10.2 × 0.4–1.8 cm, oblong-lanceolate, acute at the apex, ± rounded to cuneate at the base, pubescent above and on the nerves beneath, glandular beneath; main basal nerves extending over halfway up the blade; petiole c. 1–2 mm long; stipules 4.5–1.7 × 1.5–2 mm, lanceolate, hairy, veined.
Racemes axillary, the flowering part 1.5–4 × 1.2 cm; peduncle 1–2.5 cm long, with appressed and spreading hairs; pedicels c. 1 mm long; bracts 8 × 0.5 mm linear.
Standard greenish-yellow outside, yellow inside, the upper half often drying dark, 6–7 × 2–3.5 mm, oblong-cuneiform, pubescent and glandular in the median area.
Decumbent perennial herb, with a weak sparsely branched stem up to 15(30) cm long, from a globose or turnip-shaped tuber 2–3 × 1.5 cm.
Stems slender with sparse to dense white pubescence and often longer mostly ferruginous spreading hairs on the younger parts.
Pods 6–7 × 4–4.5 mm, oblong, covered with long ferruginous hairs c. 2 mm long, minute scaly hairs and scattered glands.
Seeds greenish-or pinkish-brown, speckled with dark blackish-purple, 2.5 × 1.5 × 1 mm; rim aril orange-brown.
Calyx c. 5–7 mm long with long spreading ferruginous hairs; lobes lanceolate, 2–4 times as long as the tube.
