IJSRP, Volume 3, Issue 5, May 2013 Edition [ISSN 2250-3153]
The family Orchidaceae is one of the largest groups among the angiosperms and distributed throughout the world. The genus Dendrobium is the second largest group among the orchid plant in India and exhibit diverse shapes, colour and morphological characters. They are widely distributed throughout the Northeastern states and recorded with 82 species from the region. The highest number of occurrence with 49 species has been recorded in Arunachal Pradesh and the least number with 5 species in Tripura state from the region. The present analysis reveals 71.95 per cent of the species require attention for conservation, 36.58 per cent of the total species are widely distributed throughout the region, while 26.89 per cent of the species are endemic confining to a particular state.