Polygonum polystachyum, Wall. ex Meissner

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 80

36. P. polystachyum Wall. ex Meissner in Wall., Pl. Asiat. Rar. 3: 61 (1832).

Stems 60-120 cm, stout, erect, arising from a creeping underground rhizome. Leaves 10-20 x 3-8 cm, oblonglanceolate, acuminate, truncate or shortly cuneate at the base, glabrous or hairy beneath, usually with red veins. Ochreae brown, thick, persistent, entire. Flowers white, in lax, somewhat leafy panicles with a red axis. Inner perianth-segments broadly obovate to orbicular; outer ones smaller, elliptical. Styles long and slender; stigmas small. Nut rarelyproduced in Europe. Cultivated in gardens and naturalized in C. & N. W. Europe. [Au Be Br D a G a Ge He Ho.] (Himalaya.)