Night Fragrant Epidendrum, Utria National Park, Colombia

''Epidendrum nocturnum'' is the type species of the genus ''Epidendrum'' of the Orchidaceae .

It is usually autogamous and sometimes cleistogamous .

The haploid chromosome number of ''E. nocturnum'' has been determined as ''n'' = 20. The diploid chromosome number has been determined both as 2''n'' = 40 and as 2''n'' = 80

In 1984, the variety ''E. nocturnum'' var. ''guadeloupense'' was determined to have a diploid chromosome number of 2''n'' = 42—48. On November.. more