Plants 5-25 cm, very variable in size. Stem creeping below, then erect, densely leafy throughout. Leaves sessile, linear-lanceolate. Inflorescence densely many-flowered, glabrous. Bracts lanceolate, diaphanous, exceeding flowers. Flowers white or pale rose. Sepals up to 5 mm long, the dorsal ovate, concave, laterals ovate-lanceolate; petals subequal in length, falcately-oblong. Labellum fleshy; saccate at base, inside with a tooth on each side and 2 parallel lamellae joining the mid-rib, in front transversely oval and yellow. Ovary fusiform-cylindric, sessile, glabrous.

Fl. Per.: March-April.

Type: “Habitat in Zeylona”; Burmann (G?).

Distribution: S. & SE.Asia, Westwards to Persia (Makran), eastwards Nepal, Assam, Burma, China, Japan. On wet places near rivers and on land temporarily flooded. A lowland plant.