Species Name (as per The IPNI) : Rhododendron arboreum Sm.
Common name : Tree Rhododendron
Vernacular name : Burans, Lal buransh (Hindi); Billi (Tamil); Kattupoo varasu (Malayalam); Pu (Kannada); Lali gurans (Nepali); Kokluiwon (Tangkhul); Chhawkhlei (Mizo)
Habit : Tree
Habitat : Evergreen oak and Blue Pine forests, 1200 - 3000 m. altitude
Comments / notes : It is the state tree of Uttarakhand. It is extremely variable in stature, hardiness, flower color and leaf characteristics. This plant holds the Guinness Record for World's Largest Rhododendron.
Key identification features : Abaxial leaf surface with white to silvery-white indumentum; corolla red to carmine, rarely pink.
Flower, Fruit : March-July
Distribution :
Uttarakhand : Uttarakhand
Sikkim : East Sikkim (Gangtok) district
West Bengal : Darjeeling district
Meghalaya : East Khasi Hills (Shillong) district
Native : Bhutan, East Himalaya, India, Nepal, Pakistan, Tibet, West Himalaya
Exotic/Native : Native
World Distribution : North Pakistan to South Tibet and Assam
Literature : Uniyal B.P., Sharma J.R., Choudhery U., Singh D.K. (2007). Flowering Plants of Uttarakhand: A Checklist. Bishen Singh Mahendra Pal Singh: 166; GRIERSON A.J.C. & LONG D.G. (1983). FLORA OF BHUTAN INCLUDING A RECORD OF PLANTS FROM SIKKIM Vol. 2: Part 1. ROYAL BOTANIC GARDEN, EDINBURGH: 372-373; K. Sankara Rao photography