Synonym(s) : Aconogonon polystachyum (Wall. ex Meisn.) M.Král; Aconogonon polystachyum var. pubescens (Meisn.) P.D.Sell; Persicaria polystachya (Wall. ex Meisn.) H.Gross; Persicaria wallichii Greuter & Burdet; Persicaria wallichii var. pubescens (Meisn.) Akeroyd; Persicaria wallichii var. tomentosa S.P.Hong; Peutalis polystachya (Wall. ex Meisn.) Raf.; Pleuropteropyrum hagei (Royle ex Bab.) Munshi & Javeid; Pleuropteropyrum polystachyum (Wall. ex Meisn.) Munshi & Javeid; Polygonum hagei Royle ex Bab.; Polygonum molle Wight; Polygonum polystachyum var. pubescens Meisn.; Reynoutria polystachya (Wall. ex Meisn.) Moldenke; Rubrivena polystachya (Wall. ex Meisn.) M.Král
Species Name (as per The IPNI) : Koenigia polystachya (Wall. ex Meisn.) T.M.Schust. & Reveal
Common name : Himalayan knotweed, Cultivated knotweed
Habit : Perennial herb
Habitat : Rocky areas, grassy slopes, irrigation channels, roadsides and damp ground amongst shrubs, 3000 - 3950 m. altitude
Flower, Fruit : July-October
Distribution :
Uttarakhand : Uttarakhand
Native : Afghanistan, Bhutan, China, East Himalaya, India, Nepal, Pakistan, Tibet, West Himalaya
Exotic/Native : Native
World Distribution : Afghanistan to South Central China and Austria, Belgium, British Columbia, California, Czechoslovakia, Denmark, France, Germany, Great Britain, Ireland, Korea, Massachusetts, Myanmar, Netherlands, Newfoundland, Norway, Oregon, Sweden, Switzerland
Literature : Uniyal B.P., Sharma J.R., Choudhery U., Singh D.K. (2007). Flowering Plants of Uttarakhand: A Checklist. Bishen Singh Mahendra Pal Singh: 208; GRIERSON A.J.C. & LONG D.G. (1983). FLORA OF BHUTAN INCLUDING A RECORD OF PLANTS FROM SIKKIM Vol. 1: Part 1. ROYAL BOTANIC GARDEN, EDINBURGH: 156-157