Habit: saprophytic herbs
Tuber: absent
Stem: sheathing above middle, without leaf
Inflorescence: type: raceme
Inflorescence: position: terminal or subterminal
Sepal: free or similar
Petal: narrower than sepals or as long as dorsal sepal
Labellum: not lobed
Column: cylindrical
Anther: 2-loculed
Pollinia: number: 4
Pollinia: other characteristics: without caudicle
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