Persicaria palmata (Dunn) K. Yonekura & Hiroyoshi Ohashi

Herbs perennial. Stems erect, 60-100 cm tall, stout, angulate, much branched upward, strigose, shortly stellate hairy. Petiole 5-12 cm; leaf blade greenish abaxially, green adaxially, orbicular or broadly ovate, 7-15 × 6-14 cm, both surfaces shortly stellate hairy, sparsely strigose, margin sparsely ciliate, sometimes decurrent along petiole forming narrow wing, palmatipartite; lobes 5-7, ovate, base constricted, apex acuminate; ocrea lax, tubular, 1.5-2.5 cm, membranous, shortly stellate hairy, strigose, oblique, margin sparsely ciliate. Inflorescence terminal or axillary, capitate, ca. 1 cm in diam., several capitula aggregated and panicle-like; peduncle densely shortly stellate hairy, sparsely strigose; bracts lanceolate, each 2- or 3-flowered. Pedicels shorter than bracts, glabrous. Perianth pinkish, 5-parted; tepals elliptic, 2.5-3 mm. Stamens 8. Styles 3, connate to below middle. Achenes included in persistent perianth, brown, opaque, ovoid, trigonous, 3-3.5 mm, minutely punctate. Fl. Jul-Aug, fr. Sep-Oct.

Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Yunnan [India].

Valleys along stream banks, moist forests; 400-1500 m.

Cephalophilon palmatum (Dunn) Borodina; Persicaria palmata (Dunn) Yonekura & H. Ohashi; Polygonum meeboldii W. W. Smith; P. pseudopalmatum G. Hoo.