Orchidaceae is one of the largest families of monocots and includes about 850 genera and 25,000 species (Atwood 1986) prevalent in the tropics (Pabst & Dungs 1975, 1977).
Orchidaceae is one of the largestfamilies of monocots and includes about 850 generaand 25,000 species (Atwood 1986) prevalent in thetropics (Pabst & Dungs 1975, 1977).