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Inflorescences terminal or in upper axils, paniculate or pseudoracemose, dense and subcapitate, up to 3 cm long above a peduncle 1–15 cm long; flowers paired; primary pedicels 0–4 mm long; primary bracts 4–8 mm long, linear; secondary pedicels 1–2(4) mm long; secondary bracts linear, small; bracteoles 2–3 mm long, linear; all bracts persistent and somewhat accrescent.
Leaves 1-foliolate; leaflet (3.5)5–17 × (1.5)3.5–10 cm, ovate, ovate-oblong or ovate-lanceolate, subacute, or rounded and mucronulate at the apex, emarginate, truncate or cuneate at the base, sparsely to densely, shortly bristly pilose on both surfaces; venation raised and closely reticulate beneath; petiolules 3–5 mm long; stipules 7–12 mm long, linear-lanceolate.
Calyx puberulous and with appressed bristly white hairs; tube 2–3 mm long; lobes 2–3 mm long, narrowly triangular, the upper pair joined for about half their length.
Erect or rarely straggling herb or subshrub 12–90 cm tall, sometimes flowering when only 12 cm tall and leaves small, rarely attaining c. 2 m; rootstock woody.
Seeds grey-brown to dark reddish-brown, 3–4.3 × 2–3 × 1.5 mm, oblong-reniform, compressed; rim aril well developed and bearing remains of the funicle.
Pod 1.2–1.7 cm × 5.5–7.5 mm, oblong-elliptic, compressed, margined, densely covered with rather long bristly whitish or blackish tubercular hairs.
Stems 1–few, simple or little-branched, densely covered with spreading whitish hairs.
Standard white, 4–7 × 2–3 mm, oblong-obovate, appressed pubescent above outside.
