Herb up to 25 cm. Stem glabrous, somewhat ribbed, towards apex trichotomously branched. Leaves ovate to elliptic, 6-55 by 4-30 mm, acute, base attenuate, laxly short-hairy, ciliate, 0.5-1.5 cm petioled. Racemes terminal or in a fork, including the peduncle 1.5-14 cm; bracts and bracteoles early caducous. Flowers c. 3 mm long, glabrous, orange-yellow to bright yellow. Outer sepals short-mucro-nate, alae broadly obovate, rounded, 3-nerved. Upper petals oblong, slightly longer than the keel; keel with 2 rounded appendages. Filaments free for ¼-½. Ovary obcordate, the upper cell smaller; style curved and widened in apical half, obliquely truncate apically. Capsule asymmetric, broadly obcordate, c. 2.5 by 3.5 mm, provided with 2 unequal cross-veined wings. Seed ± ellipsoid, tuberculate, shortly hairy, at micropylar side with a minute oblique appendage covered by a rather small, obliquely lobed aril, at chalazal side with a minute appendage.
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