Plants 10-55(-85) cm. Stems sparsely branched proximally (central stem dominant); glabrous. Leaves: stipules 3-5-fid, 0.5-1 mm (scarious); petiole 2-6(-8) cm; leaflet blade elliptic, ovate, or ovate-oblong, 0.8-2.4 × 0.4-1.4 cm, thin, margins entire, apex obtuse to retuse, mucronulate, surfaces glabrous. Inflorescences racemes, terminating stems, 3-10 cm (2-20 cm in fruit); bracts unifoliate, 5-9 mm. Pedicels divergent in fruit, 5-12 mm (4.5-17 mm in fruit). Flowers: sepals green, ovate-lanceolate, 1-2 × 0.5-0.7 mm, glabrous; petals yellow, oblong, (3.5-)4-8 × 1.8-2.2 mm, glabrous; stamens (well-exserted), yellow, 8-12 mm; anthers 2.5-3 mm; gynophore ascending, 3.5-15 mm in fruit; ovary ovoid, 1-1.3 mm; style (0.7-)1-2 mm. Capsules rhomboidal, 3.5-6 × 4-10.5 mm, glabrous. Seeds (1 or) 2-6, stramin-eous, globose, 2-2.7 mm, smooth.
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