Without the unfailing support of the Trustees of the Horticultural Development Foundation Sharvashri S. K. Birla, M. K. Saharia, S. K. Datta, H. P. Kanoria and B. D. Bose, this project of publishing the Encyclopedia of Himalayan Medicinal Flora would not have been possible. We also received enormous support from the President and Council of  the Agri Horticultural Society of India for carrying on the project. Special word of thanks to our Trustee of HDF Shri S. K. Datta who devoted his time in searching few rare photographs of medicinal plants, for which we are highly indebted. The Research and Development sub committee of AHSI provided the laboratory facilities to the research workers in this project. We would also like to mention the few who stood by us all through, both in our triumphs and in our travails.

Our grateful thanks goes to Dr.M Sanjappa, Director Botanical Survey of India, who not only helped us with his suggestions but allowed our research workers to study all relevant publications on Himalayan flora by the Botanical Survey of India from its different units in and around Kolkata and other branches. Our gratitude to Jadavpur University specially Dr. T. K. Chatterjee of Deptt. of Pharmaceutical Technology and Dr. Sabita Bhattacharya of Bose Research Institute, Kolkata for their inspiration and unstinted support. We also received help from the Regional Research Laboratory Jorhat Assam, Director National Institute of Traditional Medicine, Ministry of Health, Thimpu, Director Tibetian Medicinal & Astro Institute of H. H. Dalai Lama Himachal Pradesh, Shri P. Pramanik, Advisor and Dr. C. M. Ghosh Director State Medicinal Plants Board West Bengal, Dr. Debashish Panja, Editor-Ayush Tomorrow, Ramkrishna Mission-Narendrapur, Dr. G. S. Giri, Jt. Dir. Indian Botanic Garden Howrah, Dr. P. Sur, Shri Saibal Basu of Botanical Survey of India and Dr. P. K. Das former Jt. Secretary AHSI, who was one of the think tank of our Herbal Medicinal Plants course. We also thank Shri S. N. Datta for his sharing of rare photographs and Shri Subhojit Lahiri for making the book literally smooth.

Last but not the least we must thank our Editorial advisors Dr. S. K. Chatterjee, former Director, Medicinal Plants, Govt. of West Bengal, Dr. U. C. Bhattachrya, former Additional Director Central National Herbarium, BSI Kolkata and Dr. D. N. Guha Bakshi, former Dep. Director Library and Documentation Botanical Survey of India for their expert advice during the progress of the work. Shri B.K. Daga, who extended his sincere support in finalizing the printing of this book, we are grateful to him. Special mention to our office staff and peon for helping us in various other ways.

The endeavour for publication of this book would not have been successful without the untiring services of Dr. S. K. Basu, Dr. D. C. Pal, Smt Jayashri Datta for editing the manuscript and tireless effort of Smt. Anupama Mitra, in coordinating with the editing job inspite of other work of HDF. We thank each one of them for their contributions.