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Genus Ceratostylis section Pleuranthemum

Genus Ceratostylis section Pleuranthemum

Genus Ceratostylis Blume section Pleuranthemum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) 242

Sympodial epiphytes, rooting at the base. Rhizomes elongated, pendulous. Pseudobulbs consisting of one internode, much reduced; shorter than the leaves, 1-leaved at the apex. Leaves not sheathing at the base, deciduous, duplicate, dorsoventrally flattened or (semi- or almost) terete, leathery, glabrous. Inflorescences terminal, usually very short, either with a single flower or often in clusters. Flowers small to very small, resupinate or not. Sepals spreading or not, partly connate or free; lateral sepals connate; mentum often resembling a spur. Petals usually narrower than the sepals. Lip not mobile, entire or 3-lobed, without spur; apex usually swollen. Column at the apex with two erect arms; column-foot abbreviated; pollinia 8, solid; caudicles absent; stipe absent; viscidium present.

Malesia (Malay Peninsula and Sumatra to The Philippines and Papua New Guinea),

Mainly montane forests

Genus Ceratostylis section Pleuranthemum in New Guinea contains 2 species

Ceratostylis bulbophylli
Ceratostylis maboroensis

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Genus Ceratostylis section Pleuranthemum

Ceratostylis maboroensis Schltr., from Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 93, fig. 346