Cleisostoma filiforme

Cleisostoma filiforme
Systematics
Domain	Eukaryotes Eukaryotic
Kingdom	Plants Plantae
Division	Vascular plants Tracheophyta
Class	Monocot flowering plants Liliopsida
Order	Asparagales Asparagales
Family	Orchids Orchidaceae
Genus	Cleisostoma
Species	Cleisostoma filiforme
Scientific name
§cleisostoma filiforme

Plants pendulous. Stems more than 60 cm, rather slender, 3-4 mm in diam., branched or unbranched, laxly many leaved, internodes 4-6 cm. Leaves terete, to 33 cm × 2-2.5 mm, slender, fleshy, obtuse. Inflorescences 1 or 2, lateral, usually opposite to leaves, shorter than or sometimes nearly as long as leaves, branched or unbranched, densely many flowered; floral bracts narrowly ovate-lanceolate, ca. 2 mm. Flowers opening widely, sepals and petals yellowish green, with purplish brown stripes, lip with white lateral lobes and purple-red mid-lobe, column yellow; pedicel and ovary 4-5 mm, slender. Dorsal sepal ovate-elliptic, cymbiform, ca. 4 × 2 mm, obtuse; lateral sepals suboblong, ca. 4 × 2.5 mm, base adnate to column foot. Petals suboblong, much smaller than sepals, obtuse; lip lateral lobes erect, deltoid, obtuse and incurved, proximal margin inflexed; inflexed part square; mid-lobe sagittate-triangular, ca. 2 mm, with 2 basal backward narrow lobules, adaxially with longitudinal ridges triangularly thickened halfway; spur broadly conic, dorsiventrally compressed, concave, ca. 3 × 2 mm, interior inconspicuously septate, with a back wall callus; callus nearly stellate, triangularly thickened at center, base densely papillate-hairy. Column ca. 2 mm; anther cap elongate and triangular toward apex; stipe ovate-lanceolate, apical margin revolute; viscidium suborbicular, small. Fl. Sep-Oct. 2n = 38.

Epiphytic on tree trunks in broad-leaved evergreen forests; 400-1000 m. SW Guangxi, Hainan, S Yunnan [NE India, Myanmar, Nepal, Thailand, Vietnam].

CITIES category : Appendix II

References 

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