Bunias tcheliensis Debeaux.

Herbs annual or perhaps biennial, 9-40 cm tall, glabrous throughout or rarely sparsely pilose, multicellular glandular tubercles absent. Stems branched near base and above. Basal leaves withered by fruiting; petiole 0.5-2.5 cm, expanded at base; leaf blade pinnatifid, lyrate, or coarsely dentate, 2-10 × 0.5-2.5 cm. Cauline leaves oblong or lanceolate, 0.7-3.5 cm × 2-15 mm, sessile, auriculate, margin dentate, repand, or subentire, apex obtuse to subacute. Fruiting pedicels 4-8(-10) mm, slender, divaricate or slightly recurved, straight. Sepals pale green, oblong, 1.4-1.7 × 0.7-1 mm, spreading, glabrous. Petals white, obovate, 3-4 × 1.5-2 mm; claw slender, 0.5-1 mm. Filaments white, 1.2-1.6 mm, dilated at base; anthers ovate, 0.3-0.5 mm. Fruit ovoid or subglobose, usually quadrangular, 3-5 × 1.7-3 mm, glabrous, woody, tapering to apex; valves flat, smooth; style obsolete or rarely to 0.3 mm; stigma entire. Seeds 2, oblong or suborbicular, flattened, 1.2-1.5 × 1-1.2 mm. Fl. and fr. May-Jul.

Sandy deserts, grasslands, steppe, meadows. Hebei, Heilongjiang, Liaoning [Kazakhstan, Mongolia, Russia].