1. High Altitude Plant Physiology Research Centre (HAPPRC), H.N.B. Garhwal University, Post Box 14, Srinagar Garhwal 246174, Uttarakhand, India
2. William L. Brown Center, Missouri Botanical Garden, P.O. Box 299, St. Louis, MO 63166, USA
3. Institute of Biodiversity and Environmental Conservation, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia