白马芥 bai ma jie

Herbs 0.5-2 cm tall; caudex many branched, to 3 mm in diam. Trichomes simple, to 1 mm, mixed with fewer, forked stalked ones, restricted to leaves. Basal leaves rosulate; petiole 2-5 mm, expanded base 0.5-1 mm wide, ciliate, persistent; leaf blade ovate or oblong, 2-4 × 1-2 mm, somewhat fleshy, densely pilose throughout, base subattenuate, margin entire, apex obtuse. Flowers solitary. Fruiting pedicels slender, 3-5 mm, ascending, glabrous. Sepals oblong, 1.5-2.5 × ca. 1 mm. Petals pink, spatulate, 3-4 × 1-1.5 mm; claw 1.5-2 mm. Filaments 2-2.5 mm; anthers 0.3-0.5 mm. Ovules 6-8 per ovary. Fruit linear, 4-8 × ca. 1.3 mm; valves longitudinally striate, without a distinct midvein; style 0.4-1 mm. Seeds 1-1.5 × 0.6-0.9 mm. Fl. Jun-Jul, fr. Jul-Aug.

* Moist gravelly meadows, limestone rock crevices; 4200-4600 m. NW Yunnan (Dêqên Xian: Baima Shan).