Habit: terrestrial herbs, lithophytic herbs
Tuber: present
Stem: sheathing below middle
Leaf: characteristics: 1
Leaf: shape: ovate, cordate
Flower: other characteristics: solitary
Sepal: free or similar
Labellum: with sac or spur or auricles at base
Pollinia: number: 2, 4
Pollinia: other characteristics: granular-farinaceous, without caudicle
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