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Standard obovate-circular or obovate-elliptic, yellow, veined brown or maroon; wings ± as long as the keel; keel 6–8 mm long, strongly rounded about the middle, with a narrow sharp beak incurved at the tip.
Calyx 3.5–5 mm long, becoming basally truncate and deflexed against the pedicel, appressed pubescent; lobes narrowly triangular-acuminate, ± as long as the tube or longer.
Racemes 6–35 cm long, usually shortly pedunculate, dense, many-flowered; bracts 3–12 mm long, caudate; bracteoles inserted at base of the calyx, 3–5 mm long, filiform.
Erect generally well-branched annual or short-lived perennial, up to 0.5–2 m tall; branches appressed pubescent to tomentellous.
Pod very shortly stipitate, 1.2–1.6 × 0.5–0.7 cm, ellipsoid-oblong, shortly pubescent to tomentellous, 10–16-seeded.
Seeds c. 3 mm long, oblique-cordiform, smooth, brownish.
A stout erect herb, 5–6 ft. high
Flowers yellow and dark purple
