Habit: epiphytic herbs

Stem: tufted or separate, with leaves, noded

Leaf: characteristics: sheathing or noding at base

Leaf: position: distichous

Leaf: shape: lanceolate, oblong

Inflorescence: position: terminal or subterminal

Labellum: with sac or spur or auricles at base, divided into epichil and hypochil

Column: without column foot

Pollinia: number: 8

Pollinia: other characteristics: with caudicle or viscidium