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Information Pyrophytic perennial. Stem pubescent, up to 30 cm high, emerging from an elongate carrot-shaped woody rootstock 3–10 mm thick. Leaflets 3, 3–7 cm long, 2–2.5 cm wide, ± pointed at the apex, cuneate at the base, with a spreading indumentum; tertiary venation closely parallel; petiole 4.5–5.5 cm long; rhachis 0.6–0.8 cm long; stipules 7–18 × 2.5–5.5 mm, slightly bilobed at the base, multinerved. Peduncle 4–13 cm × 0.5–0.8 mm, pubescent; rhachis 0.5–1.5 cm long, 2–6-noded, internodes 2–4 mm long. Flower pink to purple, 13–18 × 14–20 mm; pedicel 0.5–2.5 mm long, not expanding as the pod matures; bracteoles 1.5–3 × 0.5–1 mm, ovate, 3–4-nerved. Calyx pubescent; tube c. 3 mm long; lobes 2.5–5 mm long, the upper pair joined for half of their length, the lower equally long. Standard with 2 parallel widely spaced appendages; keel without a beak, slightly twisted towards the left. Ovary 12–15-ovuled. Pod 20–40 × 2–3 mm, linear-cylindrical, pubescent, with a curved beak. Seed c. 2 × 1.5–2 mm; hilum c. 0.5 mm long, central; aril not developed.

Information Short erect pyrophytic herb with several stems 3–15 cm tall, flowering when quite leafless, arising from slender underground rhizomes 1–1.5 mm thick (but sometimes swollen into a small knot at ground level) which in turn bear beneath them slender fusiform tubers up to 6 × 1 cm. Stem weakly pubescent. Leaflets 3, 1–8 × 0.5–3 cm, elliptic- to linear-oblong, acute at the apex, rounded or subcordate at the base, almost glabrous or with short appressed bristly pubescence on both surfaces; tertiary venation parallel; petiole 1.5–8 cm long; rhachis 1–6 mm long; stipules 2–11 × 1–1.8 mm, lanceolate, almost truncate or slightly bilobed at the base, 3-nerved to multinerved, much more reduced in size on leafless stems than on leafy stems. Inflorescence axillary although appearing terminal; peduncle 0–17 cm × 0.3–0.8 mm; rhachis 1–3-noded, internodes 1–20 mm long. Flower pale to deep mauve or violet, 9–12 mm long; pedicel 1–3 mm long, not expanding as the pod matures; bracteoles 1.2–1.5 × 0.5 mm, lanceolate, 3–5-nerved. Calyx glabrescent to densely covered with white and blackish-brown appressed or spreading bristly pubescence; tube 2–3 mm long; lobes subequal, 1–4 mm long, the upper pair joined for a half to a third of their length. Standard with 2 parallel widely spaced appendages and two smaller internal appendages; keel without a beak, slightly twisted towards the left. Ovary 8–11-ovuled. Pods 3–4 cm × 2.5–3 mm, linear-cylindrical, densely covered with short appressed or spreading bristly white and dark brown pubescence, with a curved beak. Seed 2–2.5 × 2–2.5 mm; hilum central, 0.5 mm long; rim aril not developed.