I know about Dr Raman Sukumar's group working in Buxa on Asian elephants. 

Dear Nishith,

Mr. Partha Partim Ghoshal of Botanical Survey of India, Howrah worked on the flora of Buxa Tiger Reserve.

With best wishes,

Subir.

Dear Nishith,

You can also contact Gopal Krishna and Anant Kumar who are involved in floristic studies of Buxa Tiger Reserve for  their Ph.D. They are both from Botanical Survey of India.

Thank you Subir for your reply, Sorry for my delayed response as I was away from RG since long due to extensive field.

Thank you so much, lets connected my email is [email protected]

Phone: 09998981560

Thank you Nishith.

My email is [email protected]