Terrestrial or epiphytic herbs with a scrambling habit. Stems superposed, new growth arising from near apex of previous stem, base covered by imbricate obtuse to acute sheaths, bearing a single leaf at apex. Leaf conduplicate, erect, linear-lanceolate to oblanceolate, acute, articulated to apex of pseudobulb. Inflorescence fasciculate; floral bract triangular. Flower campanulate, usually red or orange-red. Dorsal sepal free, ovate, porrect. Lateral sepals obliquely ovate, forming with column foot a saccate mentum. Petals free, oblong to oblong-elliptical. Labellum bipartite, base deeply saccate, apex triangular, callus a transverse ridge. Column shorter than column foot; anther eight-celled, pollinia eight, ovoid or obliquely ovoid, laterally compressed. (PC, YN).
Species are usually low-growing epiphytes in lower to upper montane cloud forests and on shrubby plants at elevations between 1600 and 3200 m. Most species prefer exposed windy locations where they are found growing on thickly mossy tree trunks. Epiblastus acuminatus Schltr. descends to 300 m in river valleys; E. auriculatus Schltr. is found between 500 and 1000 m; E. pullei J.J.Sm. grows terrestrially in upper montane forest of Nothofagus Blume (Nothofagaceae) between 2600 and 2800 m on Mount Jaya, Papua New Guinea; E. cuneatus J.J.Sm. grows epiphytically and terrestrially in Miscanthus Anderss. (Poaceae) grassland at 2600 m and between 3000 and 3100 m at the base of trees in the West Sepik district of Papua New Guinea. (PC, YN).