Habit: epiphytic herbs

Stem: branched, with leaves, noded

Leaf: characteristics: sheathing or noding at base, margin recurved or apex lobed, midvein carinate, base clasping

Leaf: position: distichous

Leaf: shape: ovate, lanceolate, falcate

Inflorescence: type: raceme

Inflorescence: position: laterally on stem

Flower: other characteristics: spreading

Sepal: free or similar

Petal: narrower than sepals or as long as dorsal sepal

Labellum: 2-lobed, with longitudinal ridges or keels, adnate to column

Column: without column foot

Pollinia: number: 4

Pollinia: shape: globose or subglobose

Pollinia: other characteristics: with caudicle or viscidium, with stipe

Stipe: shape: triangular or subtriangular