Annuals; glabrous. Stems unbranched or branched basally, 1-3 dm. Basal leaves (soon withered); not rosulate; shortly petiolate; blade broadly obovate, 2-3 cm, margins coarsely and bluntly dentate distally. Cauline leaves: blade (mostly yellowish), ovate to lanceolate, 1-4 cm × 5-15 mm, (smaller distally), base amplexicaul, margins often entire. Racemes ebracteate, (secund, rachis flexuous). Fruiting pedicels divaricate-ascending, (straight), 1-2 mm. Flowers: calyx urceolate; sepals yellow-green, (ovate-lanceolate), 5-8 mm, keeled, (apex recurved or flaring); petals whitish (with purplish veins), 6-8 mm, blade 2-3 × 1-1.3 mm, margins not crisped, claw 4-5 mm, about as wide as blade; stamens in 3 unequal pairs; filaments: abaxial pair (connate 1/2 their length), 3-5 mm, lateral pair 2-3.5 mm, adaxial pair (connate entire length, recurved), 6-9 mm; anthers: abaxial and lateral pairs fertile, 1.7-2.5 mm, adaxial pair sterile, 0.7-1.2 mm; gynophore 0.2-0.5 mm. Fruits divaricate-ascending, somewhat torulose, nearly straight to, rarely, arcuate, flattened, 3-6 cm × 0.9-1.1 mm; valves each with obscure midvein; replum straight; ovules 26-38 per ovary; style 0.1-0.3 mm; stigma entire. Seeds oblong, 1.2-1.5 × 0.6-0.8 mm; wing (0-)0.05-0.1 mm wide, distal. 2n = 28.
Home