Habit: terrestrial herbs

Tuber: present

Stem: with leaves

Leaf: characteristics: sessile or subsessile, base clasping

Leaf: shape: ovate, cordate

Inflorescence: position: terminal or subterminal

Floral bract: leaflike

Sepal: dorsal sepal connivent with petals forming a hood, lateral sepals spreading or oblique or reflexed or connivent

Labellum: 3-lobed, adnate to column

Anther: 2-loculed

Stigma: 2

Rostellum: with 2 arms

Pollinia: number: 2

Pollinia: other characteristics: granular-farinaceous, with caudicle or viscidium