Polygonum neofiliforme Nakai, Bot Mag. (Tokyo) 36: 117. 1922; Antenoron neofiliforme (Nakai) H. Hara; Persicaria neofiliformis (Nakai) Ohki; Polygonum filiforme subsp. neofiliforme (Nakai) Kitamura; P. filiforme var. neofiliforme (Nakai) Ohwi; Sunania neofiliformis (Nakai) H. Hara; Tovara filiformis (Thunberg) Nakai var. neofiliformis (Nakai) Makino; T. neofiliformis (Nakai) Nakai.

Leaves oblong, narrow, both surfaces shortly appressed hispid, apex long acuminate. Fl. Aug-Oct, fr. Sep-Nov.

One of us (Park) believes that this taxon is a closely allied yet distinct species on the basis of results from flavonoid analysis (see Mun & Park, Pl. Syst. Evol. 196: 153–159. 1995).

* Forests, moist valleys; 200-2300 m. Anhui, Fujian, S Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, S Shaanxi, Shandong, Sichuan, Yunnan, Zhejiang.