糙苏 cao su

Leaf blade papery, orbicular-ovate to ovate-oblong, sparsely pilose or sometimes abaxially densely pilose and stellate pilose, margin serrate-dentate or irregularly crenate, terminal tooth not very long. Verticillasters inconspicuously pedunculate, compact; bracts rigid, linear-subulate, mostly longer than calyx. Flowers sessile or subsessile. Calyx ca. 10 × 3.5 mm, stellate puberulent except sometimes pilose on veins.

* Sparse forests, grassy slopes; 2000-3200 m. Gansu, Guangdong, Guizhou, Hebei, Hubei, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan

Used medicinally.