1. Aswal, B.S. and Mehrotra, B.N. (1994). Flora of Lahaul- Spiti. Bishen Singh Mahendra Pal Singh, Dehra Dun.
2. Chowdhery, H. J. and Wadhwa, B. M. (1984). Flora of Himachal Pradesh: An Analysis. Volume 1 – 3. Botanical Survey of India, Howrah.
3. Chowdhery, H.J. (1998). Orchid Flora of Arunachal Pradesh. Bishen Singh Mahendra Pal Singh, Dehra Dun.
4. Collett, H. (1902). Flora Simlensis. Rep. 1980. Bishen Singh Mahendra Pal Singh, Dehra Dun
5. Deva, S. and Naithani, H. B. (1986). The Orchid Flora of North-West Himalaya. Print and Media Associates, New Delhi.
6. Dhaliwal, D.S. and Sharma, M. (1999). Flora of Kullu District, Himachal Pradesh. Bishen Singh Mahendra Pal Singh, Dehra Dun.
7. Duthie, J.F. (1906). Orchids of the North-Western Himalaya. Ann. Roy. Bot. Gard. (Calcutta) 9: 81 – 211.
8. Kaur, H. and Sharma, M. (2004). Flora of Sirmour District (Himachal Pradesh). Bishen Singh Mahendra Pal Singh, Dehra Dun.
9. Lal, K. and Rawat, G. S. (2008). Additions to the flora of Himachal Pradesh from Sirmour District. Indian Journal of Forestry. 31(1): 113-115.
10. Nair, N.C. (1977). Flora of Bashahr Himalaya. International Bioscience Publishers, Hissar, Haryana.
11. Pearce, N.R and Cribb, P.J. (2002). Orchids of Bhutan. In: Flora of Bhutan 3(3): Royal Botanic Garden, Edinburgh and Royal Government of Bhutan, Thimpu.
12. Pusalkar, P. K. and Singh, D. K. (2008). New records for the flora of Himachal Pradesh. Ann. For. 16(1): 87 – 91.
13. Seidenfaden, G. and Arora, C. M. (1982). An Enumeration of the Orchids of North Western Himalaya. Nord. J. Bot. 2: 7 – 27. https://doi.org/10.1111/j.1756-1051.1982.tb01431.x
14. Singh, P.B., Aswal, B.S. and Gaur, R.D. (1993). New records of plants from Himachal Pradesh, India. Higher Plants of Indian Subcontinent, 4: 341-347. (Additional Series of Indian J. Forestry No. VII).
15. Singh, P.B., Aswal, B.S. and Gaur, R.D. (1994). New records of plants from Himachal Pradesh, India-II. Indian J. Forestry, 17: 78-79.
16. Singh, P.B. (1997). New records of plants from Himachal Pradesh, India-III. J. Econ. Taxon. Bot. 21(1):223-224.
17. Singh, S.K. and Rawat, G.S. (2000). Flora of Great Himalayan National Park, Himachal Pradesh. Bishen Singh Mahendra Pal Singh, Dehra Dun
18. Singh, H. and Sharma, M. (2006). Flora of Chamba District, Himachal Pradesh. Bishen Singh Mahendra Pal Singh, Dehra Dun.
19. Vij, S. P., Toor, I. S. and Sekhar, N. (1982). Observations on the orchidaceous flora of Simla and adjacent hills in the N. W. Himalayas (Ecology and Distribution). Res. Bull. Punjab Univ. (Sci.), 33: 163-175.