Leaf shoots usually short-stemmed, sometimes almost stemless. Inflorescence terminal (in Australia) or separate from leaves and precocious; bracts boat-shaped, each subtending a single flower; bracteoles open to base. Corolla lobes ±equal. Labellum showy, deeply bilobed. Lateral staminodes petaloid. Anther sessile or filament very short; crest prominent, usually strongly reflexed. Ovary trilocular. Fruit a thin-walled capsule.