Species Name (as per The IPNI) : Persicaria lapathifolia (L.) Delarbre
Common name : Pale Knotweed, Pale Persicaria, Pale smartweed, Curlytop knotweed, Willow weed
Vernacular name : Chaokhong-maan (Manipuri)
Habit : Herb
Habitat : Marshy ground
Key identification features : Leaves tomentose below. Spikes 2-5 cm long, dense.
Flower, Fruit : June-October
Distribution :
Uttarakhand : Uttarakhand
Sikkim : Sikkim
Native : Subarctic and Temperate Northern Hemisphere to West and Central Malesia, North Africa to Ethiopia
Exotic/Native : Native
World Distribution : Subarctic and Temperate Northern Hemisphere to West and Central Malesia, North Africa to Ethiopia and Argentina, Bolivia, Botswana, Chile, Free State, Juan Fernández Is., Malawi, Mozambique, New Zealand North, Paraguay, Uruguay, Zambia, Zimbabwe
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: 161-162