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

9. Bulbophyllum affine Lindley, Gen. Sp. Orchid. Pl. 48. 1830.

赤唇石豆兰 chi chun shi dou lan

Bulbophyllum kusukusense Hayata; Phyllorkis affinis (Lindley) Kuntze; Sarcopodium affine (Lindley) Lindley & Paxton.

Rhizome stout, 4-5 mm in diam., covered with scalelike sheaths, rooting at nodes. Pseudobulbs erect, 4-8 cm apart from each other, subcylindric, 3-4 cm, 5-8 mm in diam., with a terminal leaf. Petiole 1-2 cm; leaf blade oblong, 6-26 × 1-4 cm, leathery or fleshy, base contracted into petiole, apex obtuse and slightly emarginate. Scape from node of rhizome and base of pseudobulb, 4-8 cm; inflorescence 1-flowered, base with 3-5 sheaths. Pedicel and ovary 3.5-7.5 cm. Flower thickly textured; sepals and petals pale yellow with purplish stripes; lip purple. Dorsal sepal lanceolate, 17-20 × 4-5 mm, apex acute; lateral sepals falcate-lanceolate, similar in size to dorsal sepal, base adnate to column foot forming a broad mentum, apex acute. Petals lanceolate, 11-15 × 3-4 mm, margin entire, apex acute; lip lanceolate, 8-10 mm, fleshy, adaxially glabrous, grooved at base, hinged to end of column foot by a mobile joint, apex acuminate, slightly recurved. Column ca. 5 mm, stout; stelidia inconspicuous; foot ca. 5 mm, without free part; anther cap ca. 3 mm, adaxially finely papillate. Fl. May-Jul. 2n = 36.

Tree trunks or rocks in forests or along valleys; 100-600 m. S Guangdong, S Guangxi, Hainan, S Taiwan, S Yunnan [Bhutan, NE India, Japan (Ryukyu Islands), Laos, Nepal, Thailand, Vietnam].


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