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Annual or short-lived perennial, up to 1 m. tall, with a taproot.. Hairs on stems white or fulvous, appressed or spreading.. Leaves unifoliolate; stipules narrowly triangular, 2–5 mm. long; petiolule 1–3 mm. long with no sign of a petiole beneath it; blade up to 14 cm. long and 13 mm. wide, recurved apiculate at the tip, glabrous or almost so above, appressed pilose beneath; lateral nerves ± 16, prominent on both surfaces.. Flowers in lax terminal pseudoracemes and 2–3 together in upper leaf-axils; pedicels 1–2 mm. long; bracts triangular, ± 2 mm. long, persistent.. Calyx densely brown pubescent; tube ± 1.5 mm. long; teeth triangular, the lowest ± 3 mm., the lateral ± 2 mm., the upper ± 1.5 mm. long and united for half their length.. Standard fulvous outside, ovate, 7–9 mm. long; keel glabrous.. Upper filament lightly attached, dilated but not callous near the base; filament-sheath 5 mm., free parts 1–2 mm., anthers 0.5 mm. long.. Style glabrous, curved, twisted, tapering, penicillate, ± 2 mm. long.. Pod somewhat upcurved near the apex, ± 5 mm. long by 3 mm. wide, densely pubescent, silvery at the sides, dark brown on the sutures.. Seeds 8–12, longitudinal, well spaced, ± 2.8 × 1.8 × 0.8 mm.; hilum one-third along the side, hardly arillate.
Erect, ascending shrub, 0.4-0.6 m high; stems several, from rootstock, simple or laxly branched, densely grey or ferruginous-downy. Leaves linear, 25-175 mm long, mucronate, pinnately parallel-veined with midrib ferruginous; upper surface glabrous; lower surface grey-downy; subsessile. Stipules linear, setaceous. Inflorescences of terminal racemes. Flowers in pairs, purplish, downy; pedicels short; bracts minute, setaceous. Calyx densely silky, lobes narrowly triangular, long-acuminate, shortly and thickly ciliate, unequal. Petals: standard suborbicular, densely silky on outside. Flowering time Dec.? Pod 4-55 x 3 mm, densely grey-silky along middle, dark brown along sutures.
Leaves unifoliolate; petiole 0–2 mm long; lamina 5–17 × 0.4–1.7 cm (or those on shorter branches somewhat smaller), linear-lanceolate to linear, (5)7–14(18) times as long as broad, the upper surface glabrous, the lower surface appressed-or rarely spreading-pubescent; stipules up to 5 mm long, triangular-linear.
Petals orange to red or pink, 2–3 times as long as the calyx; standard conspicuously brown pubescent on outside, 8–11(12) mm long, the limb suborbicular, subtruncate at the base; wings and keel slightly shorter than the standard.
Flowers in elongate lax racemes up to 15 cm long, or commonly the lower flowers in the axils of the upper 1–2 foliage leaves, rarely with foliage leaves in the middle of the inflorescence; pedicels 1–3 mm long.
Pods (25)40–60 × 2.5–3.5 mm, closely to loosely appressed-pubescent, the hairs on the sutures dark brown to blackish and conspicuously darker than the grey or whitish hairs covering the surfaces.
Calyx (2.5)3–5(6) mm long, brown pubescent, the teeth acute, equal or up to twice as long as the tube, the two upper ones joined for ½–? their length.
Annual or short-lived perennial herb up to 60(130) cm high, with simple to much branched stems.
Ovary pubescent; style glabrous, with pencillate tip.
Stems closely appressed-to ascending-pubescent.
Stamen tube rather loosely fused dorsally.
