Presence of multiseriate velamen, parenchymatous cortex and defined endodermis was observed in roots of all the presently studied species of tribe Coelogyneae (Coelogyne breviscapa, C. corymbosa, C. flaccida, C. nervosa, C. nitida, C. ovalis, C. prolifera, C. stricta, and Pholidota pallida). The geographical conditions and type of habitat, besides the host-tree on which orchid grows has a vital role in survivability of epiphytic orchids. The orchids that are getting poor supply of nutrients from the host plant undergo adaptations so as to survive under extreme environmental conditions