Epidendrum adenoglossum is an orchid known primarily from its type herbarium specimen, Mathews 1073, collected in Peru near Pangoa.

[1] In 2005, Hágsater & Soto[2] designated this species as the lectotype of E. subg.

Epidendrum adenoglossum is a sympodial orchid with stems which show no tendency to produce pseudobulbs.

The elongate, densely many-flowered[3] racemose inflorescence grows from a terminal ancipitous spathe, 5.5 cm long.

The linear-oblong, obtuse lip is adnate to the column to its apex, and is not separated into lobes.