The history of taxonomical studies on flora of Nepal dated back to more than 200 years. The early taxonomical studies of Nepalese plants were carried out by the Europeans mainly by the British botanists. As a result of which the first book on flora of Nepal 'Prodromus Florae Nepalensis' was prepared in 1825 by David Don. Although a few but notably important due to pioneer work of its kind on Nepalese flowering plants, taxonomical works on Nepalese plants were published from 1802 to 1947. Since 1949 many British, Japanese and Indian expeditions carried out plant explorations in Nepal and published many important findings. Many important works on Nepalese flowering plants were published between 1949 and 1982, especially three volumes of 'An Enumeration of flowering plants of Nepal' in 1978-1982 by Hara et al.