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

2. Dendrolirium lasiopetalum (Willdenow) S. C. Chen & J. J. Wood, Fl. China. 25: 351. 2009.

白绵绒兰 bai mian rong lan

Basionym: Aerides lasiopetala Willdenow, Sp. Pl. 4: 130. 1805; Dendrobium albidotomentosum Blume; D. pubescens Hooker; Epidendrum lasiopetalum (Willdenow) Poiret; Eria albidotomentosa (Blume) Lindley; E. flava Lindley; E. lasiopetala (Willdenow) Ormerod; E. pubescens (Hooker) Lindley ex Loudon; Octomeria pubescens (Hooker) Sprengel; Pinalia albidotomentosa (Blume) Kuntze; P. pubescens (Hooker) Kuntze.

Rhizome creeping, ca. 5 mm in diam. Pseudobulbs borne 1.5-5 cm apart on rhizome, fusiform, 3-7.5 × 1.5-3.5 cm, apex with 3-5 leaves. Leaf blade elliptic or oblong-lanceolate, 12-30 × 1.5-5 cm, with 8-14 main veins, apex acuminate. Inflorescences 1 or 2, arising from near base of an old pseudobulb, 10-20 cm, laxly flowered; rachis densely white or grayish yellowish cottony-hairy; floral bracts ovate-lanceolate, ca. 1 cm, abaxially with white or grayish yellowish cottony hairs, apex long acuminate; pedicel and ovary 2-3 cm, densely hairy. Sepals densely white or grayish yellowish cottony-hairy abaxially; dorsal sepal lanceolate, ca. 12 × 2 mm, obtuse; lateral sepals triangular-lanceolate, slightly oblique, ca. 13 × 5 mm. Petals linear, ca. 14 × 1 mm, acuminate; lip ovate in outline, ca. 11 × 5 mm, base contracted into a claw, 3-lobed; margins of lobes undulate; lateral lobes subobovate; mid-lobe suboblong; disk with an obovate-lanceolate thickened area extending from base to mid-lobe. Column ca. 4 mm, thick, foot ca. 4 mm, arcuate. Capsule cylindric, 2.5-4 cm × ca. 4 mm, with white cottony hairs when young. Fl. Jan-Apr, fr. Aug. 2n = 38, 40.

Epiphytic in shaded places in forests, epiphytic on trees along streams, lithophytic on rocks; 1200-1700 m. SE Hainan, Hong Kong [Bhutan, Cambodia, India, Laos, Myanmar, Nepal, Thailand, Vietnam].


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