赤唇石豆兰（中国高等植物图鉴）
高士佛豆兰（台湾植物志）
恒春石豆兰（台湾兰科植物彩色图鉴）
Bulbophyllum affine Lindl., Gen. Sp. Orch. Pl.: 48. 1830; Rchb. f. in Walp. Ann. Bot. Syst. 6: 246. 1861; Hook. f., Fl. Brit. Ind. 5: 756. 1890; King et Pantl. in Ann. Bot. Gard. Calcutta 8: 67, pl. 91. 1898; S. Y. Hu in Quart. J. Taiwan Mus. 25 (1, 2): 60. 1972; Garay et Sweet, Orch. South. Ryukyu Isl.: 134. 1974; 中国高等植物图鉴 5: 730. 图8289. 1976; 海南植物志 4: 239. 1977; 台湾植物志 5: 890, 图1552. 1978; H. Hara et al., Enum. Flow. Pl. Nepal 1: 32.1978; Seidenf. in Dansk Bot. Ark. 33 (3): 18, fig. 3. 1979, et in Opera Bot. 114: 307. 1992; Averyanov, Iden. Guide Vietnam. Orch.: 257. 1994; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 289. 1995; 台湾兰科植物彩色图志 1: 104, 107. 图9. 1996; Z. H. Tsi, S. C. Chen et K. Mori, Wild Orch. China: 92, pl. 128. 1997. ——B. kusukuensis Hayata, Icon. Pl. Formos. 4: 48, fig. 19. 1914.
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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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. |
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Petiole 1-2 cm; leaf blade oblong, 6-26 × 1-4 cm, leathery or fleshy, base contracted into petiole, apex obtuse and slightly emarginate. |
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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.
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