Joseph Dalton Hooker, M.D.
The Rhododendrons of Sikkim-Himalaya; being an Account, Botanical and Geographical of the Rhododendrons recently discovered in the Mountains of Eastern Himalaya, from Drawings and Descriptions made on the Spot, during a Government Botanical Mission to that Country.
Edited by Sir W.J. Hooker, Vice President of the Linnean Society and Director of the Royal Gardens of Kew. London: Reeve and Co., 1849-51.