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

36. Bulbophyllum crassipes J. D. Hooker, Fl. Brit. India. 5: 760. 1890.

短耳石豆兰 duan er shi dou lan

Rhizome stout, 3-4 mm in diam., rooting from base of pseudobulbs. Pseudobulbs 2-30 cm apart from each other, ovoid or conic, 3-4 cm, 1.5-2.5 cm in diam., usually 4- or 5-veined, with a terminal leaf. Petiole 1-2 cm; leaf blade oblong, 12-17 × 2-3.5 cm, fleshy or thickly leathery, apex obtuse and slightly emarginate. Scape from base of pseudobulb, arching, 4-17 cm; raceme 2-7 cm, densely many flowered; peduncle stout, base with 3 or 4 sheaths; floral bracts pale brown, ovate-lanceolate, 5-7 mm, apex acute. Pedicel and ovary 4-5 mm. Flowers yellowish brown. Dorsal sepal oblong, concave, ca. 6 × 3 mm, apex obtuse-rounded; lateral sepals ovate-lanceolate, much longer than dorsal sepal, base ca. 3.5 mm wide, their lower edges connate and upper edges incurved near apex to form an ovoid sac, apex acute. Petals obliquely triangular, 2.5-3 × ca. 2 mm, decurrent to column foot, margins often irregularly denticulate, apex shortly caudate; lip ligulate, longer than petals, fleshy, margin finely papillate, grooved at adaxial base, with 2 auricles on both basal sides; auricles subsquare, ca. 1 mm, apex truncate and slightly retuse. Column ca. 2 mm; stelidia deltoid, ca. 1 mm, apex acute; foot ca. 2 mm, with free part ca. 1 mm; anther cap glabrous. Fl. Apr. 2n = 38.

Tree trunks in evergreen broad-leaved forests; 1100-1200 m. S Yunnan [Bhutan, NE India, Malaysia (Penang), Myanmar, Thailand].


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