单花荠(原亚种) dan hua ji (yuan ya zhong)

Cochlearia scapiflora J. D. Hooker & Thomson, J. Proc. Linn. Soc., Bot. 5: 154. 1861; Pegaeophyton scapiflorum var. pilosicalyx R. L. Guo & T. Y. Cheo.

Caudex slender, 1-8(-12) mm in diam., few to many branched, sometimes simple and somewhat stout. Petals (3.5-)5-7 × (1.5-)2-3(-3.5) mm, length (1.8-)2-2.5(-3) × width. Seeds 1.5-2(-2.5) × 1-1.6(-1.8) mm. Fl. May-Sep, fr. Jul-Oct.

Alpine tundra, alpine meadows, muddy gravelly slopes, gravel near glaciers, grassy slopes, lake shores, moist pastures, stony slopes with unconsolidated screes, seepage areas in screes, moss by streamlets, rock crevices, boggy ground by lakes, sandy stream edges, by melting snow or running water; 4000-5400(-5600) m. Gansu, Qinghai, Sichuan, Xinjiang, Xizang, Yunnan [Bhutan, India (Assam), Kashmir, Myanmar, Nepal, Sikkim].