Dr. Sudhansu Sekhar Dash is serving as a Scientiest-E and Scientist In-charge, Publication Division, Botanical Survey of India, Kolkata.He has Special interest in Floristic study in Eastern Himalayan plants, Flora of Sikkim, Arunachal Pradesh, Flora of, Kurung Kumey district, Arunachal Pradesh; Leguminosae of Arunachal Pradesh, and Botanic Garden Education. Also, presentely he is involved in Editorial works, bringing out Nelumbo and other BSI publications.