黑水华羽芥 hei shui hua yu jie

Cardamine heishuiensis W. T. Wang, Acta Bot. Yunnan. 9: 15. 1987.

Herbs annual, 15-45 cm tall, sparsely pilose with a mixture of simple and short-stalked, 1-forked trichomes to 1 mm. Stems erect, several branched along lower half, longitudinally striate, pilose. Basal leaves withered by flowering. Middle cauline leaves pinnatisect, 1.2-4.5 × 1-2.5 cm; petiole 3-15 mm, not auriculate at base; terminal lobe lanceolate, elliptic, or oblong, 0.3-2 cm × 2-12 mm, base decurrent with distal pair of lateral lobes or shortly petiolulate, margin dentate or subentire, apex acute or obtuse; lateral lobes 2-4 on each side of midvein, similar to terminal lobe but smaller. Uppermost cauline leaves much smaller and less divided than middle leaves. Racemes ebracteate. Fruiting pedicels divaricate or reflexed, (0.5-)0.7-1.5 cm, straight, slender, glabrous or sparsely pilose. Sepals oblong, 1.5-2.3 × 0.8-1 mm, glabrous or sparsely pilose, not saccate. Petals white, spatulate, 4-5 × 1.5-2 mm, base attenuate, apex obtuse; claw shorter than sepals. Median filament pairs 2-3 mm, dilated; lateral pair 1-1.5 mm; anthers ovate, 0.4-0.5 mm. Ovules 24-40 per ovary. Fruit linear, 1.5-3 cm × 0.7-1 mm; valves glabrous; style 0.4-1 mm. Seeds brown, oblong, 1.2-1.4 × 0.6-0.8 mm, plump, strongly reticulate, apically winged. Fl. and fr. Jun-Aug.

* Rock crevices; 2100-2500 m. Sichuan.