(1798) had the lower part of the inflorescences covered in imbricate sheathes, Reichenbach placed them in the section Amphiglotium Polycladia.

Because E. floribundum Kunth 1816 had no imbricate sheaths on the lower part of the inflorescence, Reichenbach placed it in the subsection Euepidendrum Planifolia Paniculata.

According to the World Checklist of Selected Plant Families published by Kew,[4] E. fastigiatum Lindl.

1853 and E. floribundum Kunth 1816 are both synonyms for Epidendrum paniculatum Ruiz & Pav.

In 1984, the diploid chromosome number of an individual identified as E. floribundum Kunth was determined as 2n = 40.