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Information Erect herb 60–180 cm tall, arising from a perennial woody rootstock. Stems annual, ribbed, pubescent or with lines of appressed hairs along the ribs and pubescent in between. Leaves pinnately 3-foliolate; leaflets 1.8–7.2(11) × 1.6–4.2(5) cm, narrowly oblong-elliptic, subacute or rounded at the apex, mucronate and with an apical tuft of hairs, rounded at the base, appressed pubescent on both surfaces, more densely so on the veins of the lower surface, or sparsely pilose to velvety, discolorous; petiole 0.5–7 cm long; rhachis 0.3–5 cm long; petiolules 1.5–3 mm long; stipules 4–12 × 1–3 mm, lanceolate, striate, persistent. Flowers axillary, solitary, in pairs or in 3–4-flowered fascicles, the late or lack of development of the leaves giving these few-flowered fascicles the appearance of a terminal pseudoraceme; pedicels 5–10 mm long; bracts absent; bracteoles 1–2 mm long, lanceolate, persistent. Calyx pubescent; tube 3–5 mm long; lobes 2–5 mm long, triangular, upper pair completely fused. Standard purple, crimson inside at the base, greenish outside, sometimes mostly green or yellow, 11–14 × 10–12 mm, round or nearly so; wings mostly mauve or blue; keel green or cream-coloured. Ovary 6–9 mm long, linear-oblong, compressed, tomentose; style 3–5 mm long, stigma minute, terminal, capitate, penicillate. Pods 2.5–4.3 cm × 4–10 mm, oblanceolate, appressed pubescent with mixed short and very short hairs, 5–6-seeded. Seeds reddish-brown speckled black, 4–5 × 4–5 × 1–2 mm, square, compressed.

Information Erect herb to 1.3 m tall, arising from a perennial tuberous or woody rootstock. Stems annual, angled, sometimes ribbed, sparsely to densely white or golden pilose, young stems pale green becoming dark grey. Leaves pinnately 3-foliolate; leaflets narrowly elliptic, elliptic or ovate, pubescent on both surfaces, reddish-black gland-dotted on the upper surface (×10 magnification), with black glands on the leaflet lower surface, hence the upper surface is paler; terminal leaflet 2–7.3 × 1.1–4 cm, lateral leaflets 1.6–6.6 × 0.8–3.2 cm; petiole 0.5–6.2 cm long; rhachis 0.5–2.5 cm long; petiolules 2–5 mm long; stipules 6–12 × 2–4 mm, lanceolate, pubescent, striate, usually caducous; stipels 2 mm long. Inflorescences consisting of short, lax axillary pseudoracemes, sometimes aggregated into axillary and terminal congested panicles; peduncle of the pseudoraceme 4–22 mm long; rhachis of the pseudoraceme 3–50 mm long; peduncle of the panicle 4–12 mm long; rhachis of the panicle 5–55 mm long; pedicels 1–6(8) mm long, white pilose; bracts absent; bracteoles minute, caducous. Calyx pilose with gold coloured or white hairs; tube 3 mm long; lobes minute, 1–1.5 mm long, upper pair fused along most of their length. Standard purple, sometimes tinged greenish or yellowish outside with deep purple veining inside, 5–9 × 5–8 mm, almost round; wings and keel pale green or yellow, tinged with purple. Ovary 4 mm long, linear-oblong, compressed, white pilose; style 3 mm long; stigma minute, terminal, capitate, penicillate. Pods 1.5–3.1 × 0.6–1.6 cm, narrowly oblong, falcate, densely golden pilose, 4–5-seeded. Seeds reddish-brown speckled black, 4 × 3 × 2 mm; aril narrowly elliptic, creamy-white.