G.  King and Pantling, R., ?On some new orchids from Sikkim?, Journal of the Asiatic Society of Bengal, vol. 64, pp. 329 - 344, 1896.

G.  King and Pantling, R., ?A second series of new orchids from Sikkim?, J. Asiat. Soc. Bengal, vol. 65, pp. 118 - 134, 1896.

G.  King and Pantling, R., ?The orchids of the Sikkim-Himalaya?, Ann. Roy. Bot. Gard., Calcutta, vol. 8(1), pp. 1 - 342, 1898.