Habit: terrestrial herbs

Rhizome: retrose or transverse or creeping or ascending

Stem: sheathing below middle, leafy

Leaf: characteristics: plicate or plicate-venous

Leaf: shape: lanceolate, elliptic

Inflorescence: type: raceme

Inflorescence: position: terminal or subterminal

Flower: other characteristics: recurved, spreading

Sepal: free or similar

Petal: shorter or smaller than sepals, similar to sepals

Labellum: divided into epichil and hypochil, sessile

Rostellum: glabrous

Pollinia: number: 4

Pollinia: other characteristics: granular-farinaceous, neither caudicle nor viscidium

Fruit:type: capsule

Fruit:shape: obovate, elliptic

Fruit: other characteristics: pendulous or ascending