Cephalophilon runcinatum (Buchanan-Hamilton ex D. Don) Tzvelev; Persicaria morrisonensis (Hayata) Nakai; P. runcinata (Buchanan-Hamilton ex D. Don) H. Gross; Polygonum morrisonense Hayata; P. panduriforme H. Léveillé & Vaniot.

Leaf blade sparsely strigose on both surfaces; lateral lobes 1-3 pairs. Capitulum usually geminate, 1-1.5 cm in diam.

Grassy slopes, wet valleys; 1200-3900 m. ?Fujian, Guangxi, Guizhou, Hubei, Hunan, Sichuan, Taiwan, Xizang, Yunnan [Bhutan, N India, Indonesia (Sumatra), ?Kashmir, Malaysia, Myanmar, Nepal, Philippines, Sikkim, Thailand].