鸡爪大黄(原变种) ji zhua da huang (yuan bian zhong)

Rheum palmatum Linnaeus var. tanguticum Maximowicz ex Regel, Gartenflora 23: 305. 1874; R. palmatum subsp. dissectum Stapf; R. tanguticum var. viridiflorum Y. K. Yang & D. K. Zhang.

Plants 1.5-2 m tall. Stem glabrous or strigose at nodes of upper part. Basal leaves orbicular or broadly ovate, large, 30-60 cm. Panicle much branched; branches connivent.

* Valleys; 1600-3000 m. Gansu, Qinghai, Shaanxi, Xizang.