Habit: semi-epiphytic herbs, epiphytic herbs

Stem: branched, with leaves

Leaf: characteristics: sheathing or noding at base, base clasping

Leaf: position: in two rows

Inflorescence: position: laterally on stem

Inflorescence: other characteristics: branched, unbranched

Sepal: free or similar

Petal: similar to sepals

Labellum: 3-lobed, with longitudinal ridges or keels, adnate to column

Column: without column foot

Pollinia: number: 2, 4

Pollinia: shape: globose or subglobose

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

Stipe: shape: lanceolate

Viscidium:shape: sandlelike or subreniform