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FOC | Family List | FOC Vol. 25 | Orchidaceae | Bulbophyllum

20. Bulbophyllum ledungense Tang & F. T. Wang, Acta Phytotax. Sin. 12: 45. 1974.

乐东石豆兰 le dong shi dou lan

Rhizome creeping, 1-2 mm in diam., branched, rooting at nodes and from base of pseudobulbs, roots spreading. Pseudobulbs 1-4 cm apart on rhizome, cylindric or ellipsoid, 8-13 mm, 3-5 mm in diam., with a terminal leaf. Petiole short, 1-2 mm; leaf blade oblong, 1.5-3 × 0.3-0.8 cm, leathery, base contracted into petiole, apex obtuse-rounded and slightly emarginate. Scapes 1 or 2, from base of pseudobulb or nodes of rhizome, erect, 10-20 mm, slender; raceme shortened, umbel-like, 2-5-flowered; floral bracts oblong, small, ca. 2.5 mm, apex acuminate. Pedicel and ovary ca. 2.5 mm. Sepals free, lanceolate, 4-6 × ca. 1.2 mm, thickly textured, apical margins slightly incurved, apex acuminate; lateral sepals slightly longer than dorsal sepal, base adnate to column foot. Petals oblong, ca. 2 × 0.8 mm, entire, shortly acute; lip narrowly oblong, ca. 1.2 × 0.4 mm, fleshy, grooved at base, abaxially ± finely papillate, adaxially with a ridge on either side near margins, apex obtuse-rounded. Column ca. 0.8 mm, stout; stelidia subulate, ca. 0.4 mm; foot ca. 0.8 mm, with free part ca. 0.3 mm; anther cap mucronate at apex. Fl. Jun-Oct.

● Rocks in forests. S Hainan.


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