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Leaves subsessile, simple; blade (7)10–22 × 3–6 mm, oblong, rounded at both ends, appressed pubescent beneath; stipules mostly 1–2 mm long, subulate, but enlarged on flowering branches (leaflet proportionally reduced), 2–4 mm long, linear-lanceolate to obliquely lanceolate-acuminate.
Standard broadly elliptic, yellow, lined red, puberulous medially near apex outside; wings as long as the keel; keel 5 mm long, subangular, with a rather short twisted beak.
Calyx 3.5–4 mm long, deeply divided into 2 lips, appressed pubescent; lobes narrowly triangular-lanceolate, c. 3 times as long as the tube.
Seeds 1.2–1.5 mm long, very obliquely cordiform, minutely pitted, greenish to reddish-brown.
Erect, sometimes diffuse, annual, 15–50 cm tall; branches slender, appressed pubescent.
Pod shortly stipitate, 1.2–1.6 × 0.35–0.45 cm, oblong-fusiform, glabrous, 10–16-seeded.
A slender ascending herb up to 2 ft. high
Flowers red and yellow.
