凤蝶兰（植物分类学报）
Papilionanthe teres (Roxb.) Schltr. in Orch. 9: 78. 1915; Garay in Bot. Mus. Leaf. Harvard Univ. 23 (10): 372. 1974; Seidenf. in Opera Bot. 95: 230, fig. 143. 1988; Averyanov, Vasc. Pl. Syn. Vietnam. Fl. 1: 134. 1990; Seidenf., l. c. 114: 422. 1992; Averyanov, Iden. Guide Vietnam. Orch.: 349. 1994; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 295. 1995; Z. H. Tsi, S. C.Chen et K. Mori, Wild Orch. China: 109. pl. 248. 1997. ——Dendrobium teres Roxb., Fl. Ind. ed. 2, 3: 485. 1832. ——Vanda teres (Roxb.) Lindl., Gen. Sp. Orch. Pl.: 217. 1833, et Bot. Reg. 21: t. 1809. 1836; 中国高等植物图鉴 5: 770. 图8370. 1976.
Epiphytic on tree trunks in open forests or at forest margins; 500-900 m. S Yunnan [Bangladesh, Bhutan, India, Laos, Myanmar, Nepal, Thailand, Vietnam].
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Stems scrambling, terete, usually to 1 m, stout, branching. |
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Leaves well spaced, terete, 8-18 cm × 4-5 mm, fleshy, obtuse. |
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Inflorescence slightly longer than leaf, laxly 2-5-flowered; peduncle stout, with 3 or 4 membranous sheaths; floral bracts broadly ovate, 4-6 mm, slightly fleshy, obtuse. Flowers opening widely, 4-10 cm in diam., thinly textured, sepals and petals white, tinged with pink or purplish, lip deep purple-red, spur yellowish brown; pedicel and ovary white, 2-3 cm. Dorsal sepal broadly elliptic, ca. 2.5 × 2 cm, obtuse-rounded; lateral sepals obliquely ovate-oblong, ca. 3 × 2 cm, base adnate to column foot, apex obtuse. Petals suborbicular, large, ca. 3 × 2.7 cm, obtuse; lip spurred, 3-lobed; lateral lobes embracing column, subobovate, ca. 1.5 cm wide, rounded; mid-lobe spreading, obovate-triangular, ca. 2 cm, adaxially shortly hairy, deeply bilobed; spur conic, ca. 2 cm. Column ca. 5 mm, foot ca. 5 mm. Fl. May-Jun.
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