World Distribution : East Himalaya, Myanmar, Nepal, Thailand, Tibet, Vietnam, West Himalaya
Literature : Oleg P & Adam S (1984). Flowers of Himalaya. Oxford University Press: 307; Balakrishnan, N. P. (1983). Flora of Jowai Vol.2. Published BSI: 345; Uniyal B.P., Sharma J.R., Choudhery U., Singh D.K. (2007). Flowering Plants of Uttarakhand: A Checklist. Bishen Singh Mahendra Pal Singh: 191; GRIERSON A.J.C. & LONG D.G. (1983). FLORA OF BHUTAN INCLUDING A RECORD OF PLANTS FROM SIKKIM Vol. 2: Part 3. ROYAL BOTANIC GARDEN, EDINBURGH: 1303-1304