Epidendrum difforme (the "Differently Formed Epidendrum") is a species of orchid in the genus Epidendrum. In 1861, Müller classified this species in the subsection Umbellata of the section Planifolia of subgenus Euepidendrum <small>Lindl.</small> of the genus Epidendrum.
The diploid chromosome number of E. difforme has been determined both as 2n = 40 and as 2n = 39.
Reichenbach, H. G. "Orchides" in Müller, C. Ed. Walpers Annales Botanices Systematicae 6(1861)402-403. Berlin.