筒瓣兰（中国高等植物图鉴）
Anthogonium gracile Lindl., Gen. Sp. Orch. Pl. 426. 1840; Griff., Icon. Pl. Asiat. t. 345. 1851; Hook. f. Fl. Brit. Ind. 5: 823. 1890; King et Pantl. in Ann. Bot. Gard. Calcutta 8: 96. pl. 134. 1898; Hand.——Mazz., Symb. Sinic. 7: 1355. 1936; Banerji in J. Bombay Nat. Hist. Soc. 55: 257. 1958; Tuyama in H. Hara, Fl. East. Himal., 425. 1966, et in Ohashi, Fl. East. Himal. 3: 137. 1975; 中国高等植物图鉴5: 717.图8263. 1976; Seidenf. in Opera Bot. 89: 67, fig. 33. 1986, et 114: 102. 1992; Averyanov, Vasc. Pl. Syn. Vietnam. Fl. 1: 25. 1990, et Iden. Guide Vietnam. Orch. 98. 1994; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 289. 1995; Z. H. Tsi, S. C. Chen et K. Mori, Wild Orch. China 90. Pl. 117. 1997. ——Anthogonium corydaloides Schltr. in Fedde Repert. Sp. Nov. Beih. 4: 66, 230. 1919.
Grassy slopes or thickets; 1200-2300 m. W Guangxi, SW Guizhou, SE Xizang, W to SE Yunnan [Bangladesh, Bhutan, Cambodia, N India, Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam]. |
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Plants to 55 cm tall. Pseudobulbs usually partly buried in soil, 1-2 cm in diam., with 2 or 3 nodes, with 2-5 leaves. |
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Leaf blade narrowly elliptic or narrowly lanceolate, 7-45 × 1-2(-3.5) cm, papery, base petiolate, apex acuminate; petioles and sheaths forming a slender pseudostem 3-22 cm. |
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Inflorescence erect; peduncle slender, glabrous, with several tubular sheaths; rachis 4-10(-25) cm, laxly 4-8-flowered; floral bracts ovatelanceolate, small, ca. 4 mm, apex acute. Flowers often slightly nodding, lip rose-pink or white and tinged with red; pedicel and ovary 1.5-2 cm. Sepals connate in basal half forming a tube 7-8 mm, with apical half free; dorsal sepal oblong-lanceolate, ca. 16 × 2 mm, apex obtuse; lateral sepals falcate-spatulate, ca. 16 × 4.5 mm, apex acute. Petals narrowly oblong-spatulate, ca. 16 × 2 mm, apex obtuse; lip ca. 1.6 cm, cuneate-clawed at base, apical part 3-lobed; lateral lobes ovate-triangular, apex obtuse; mid-lobe subovate, nearly as large as lateral lobes, apex obtuse. Column ca. 1.6 cm. Fl. Jul-Nov. 2n = 38, 40, 42, 54. |
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