Polygonum pauciflorum Maximowicz, Ind. Sem. Hort. Petrop. 3. 1866; Bilderdykia pauciflora (Maximowicz) Nakai; Fagopyrum pauciflorum (Maximowicz) H. Gross; Fallopia pauciflora (Maximowicz) Kitagawa; P. convolvulus var. pauciflorum (Maximowicz) V. N. Voroschilov; Tiniaria pauciflora (Maximowicz) Nakai ex T. Mori.

Flowers few; bracts each 1- or 2(or 3)-flowered. Fl. Jun-Jul, fr. Jul-Aug.

One of us (Park) notes that this appears to be a poorly developed form of the typical variety that is often found in harsh environments, and that it can hardly be considered a variety.

* Mixed forests in valleys, thickets; 400-1000 m. Hebei, Heilongjiang, Shandong.