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Orchidantha N.E. Br.
Gard. Chron. II, 26: 519 (1886)

     Perennial herbs with thick roots, creeping rhizome and short stems. Leaves distichous with long petioles and sheathing base. Blade elliptic, glabrous with longitudinal nerves joined with numerous finer cross nervules. Inflorescence terminal, short, cymose, bearing few large short-lived flowers. Ovary inferior, prolonged into a ± solid structure often named calyx tube. Sepals 3, narrow. Petals 2 lateral short, and one median large, transformed into a labellum. Stamens 5. Style with 3-lobed stigma which is toothed or fringed in different ways. Ovary 3-locular, fruit a loculicidal capsule. Seeds hairy with a lacerate aril.
     Kai Larsen, Flora of Thailand, pp. 170-171, Vol. 2 Part 2, 1972.

Geographical Distribution:
     Species of the genus Orchidantha are endemic to Southeast Asia and Southwestern China.

Taxonomic Diversity:
     Includes about 18 species.

Ecology and Pollination Biology:
     Often found in moist humus soil in evergreen forests, where it covers the forest floor in large areas.

Orchidantha chinensis T.L.Wu
Orchidantha foetida Janjitt. & Larsen
Orchidantha siamensis K. Larsen

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