Epidendrum adenoglossum Lindl. (1841) is an orchid

Orchidaceae

The Orchidaceae, commonly referred to as the orchid family, is a morphologically diverse and widespread family of monocots in the order Asparagales. Along with the Asteraceae, it is one of the two largest families of flowering plants, with between 21,950 and 26,049 currently accepted species,...

 known primarily from its type herbarium specimen, Mathews 1073, collected in Peru

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

 near Pangoa

Pangoa District

Pangoa District is one of eight districts of the province Satipo in Peru.-References:...

. When Lindley published the name, he placed the species in the subgenus E. subg. Spathium Lindl. (1841)

Epidendrum subg. Spathium

John Lindley published Epidendrum subg. Spathium of the Orchidaceae. According to Lindley's diagnosis,, the E. subg. Spathium is recognizable by is sympodial habit with individual stems being slender and covered by the bases of the distichous leaves, by the lip of the flower being...

. In 2005, Hágsater & Soto designated this species as the lectotype of E. subg. Spathium Lindl. (1841).

Description

Epidendrum adenoglossum is a sympodial

Sympodial

Sympodial means "with conjoined feet", and in biology is often used to refer to the outward morphology or mode of growth of organisms.-In botany:...

 orchid with stems which show no tendency to produce pseudobulb

Pseudobulb

The pseudobulb is a storage organ derived from the part of a stem between two leaf nodes.It applies to the orchid family , specifically certain groups of epiphytic orchids, and may be single or composed of several internodes with evergreen or deciduous leaves along its length.In some species, it is...

s. The stems are covered with imbricating sheathes, which bear sessile leaves on the upper part of the stem. The fleshy, distichous, linear-oblong obtuse leaves grow up to 15 cm long by 2 cm wide. The enlongate, densely many-flowered racemose

Raceme

A raceme is a type of inflorescence that is unbranched and indeterminate and bears pedicellate flowers — flowers having short floral stalks called pedicels — along the axis. In botany, axis means a shoot, in this case one bearing the flowers. In a raceme, the oldest flowers are borne...

 inflorescence grows from a terminal ancipitous spathe, 5.5 cm long. The sepals are ovate and acute, the dorsal 5 mm long, the laterals oblique and larger than the dorsal. The linear-acute petals are three-veined. The linear-oblong, obtuse lip

Labellum

Labellum is the Latin diminutive of labium, meaning lip. These are anatomical terms used descriptively in biology, for example in Entomology and botany.-Botany:...

 is adnate

Adnation

Adnation in plants is the "union of unlike parts; organically united or fused with another dissimilar part, e.g. an ovary to a calyx tube, or stamens to petals". This is in contrast to connation, the fusion of similar organs....

 to the column

Column (botany)

The column, or technically the gynostemium, is a reproductive structure that can be found in several plant families: Aristolochiaceae, Orchidaceae, and Stylidiaceae....

to its apex, and is not separated into lobes. The callus consists of three short keels.

Mathews did not note the colors of the flowers.