宽叶厚唇兰（中国高等植物图鉴）
Epigeneium amplum (Lindl.) Summerh. in Kew Bull. 13 (2): 260. 1957; Banerji et Thapa in J. Bomb. Nat. Hist. Soc. 67: 148, fig. 1970; 中国高等植物图鉴 5: 707. 1976; H. Hara et al., Enum. Flow. Pl. Nepal 1: 41. 1978; Seidenf. in Dansk Bot. Ark. 34 (1): 71, 74 (fig. 33). 1980; Averyanov, Vasc. Pl. Syn. Vietnam. Fl. 1: 85. 1990; Seidenf. in Opera Bot. 114: 255. 1992; Averyanov, Iden. Guide Vietnam. Orch.: 219. 1994; 中国兰花全书: 58. 1998. ——Dendrobium amplum Lindl., Gen. Sp. Orch. Pl. : 74. 1830; Hook. f., Fl. Brit. Ind. 5: 711. 1890; King et Pantl. in Ann. Bot. Gard. Galcutta 8: 63, pl. 89. 1898. ——Sarcopodium amplum (Lindl.) Lindl. in Paxt. Fl. Gard. 1: 155. 1850; Kraenzl. in Engler, Pflanzenr. 45 (IV. 50, II. B. 21): 324. 1910.
Lithophytic on rocks or epiphytic on tree trunks in forests or along streams; 1000-1900 m. S Guangxi, SE Xizang, SE to NW Yunnan [Bhutan, NE India, Myanmar, Nepal, Thailand, Vietnam]. 本种是属内国产种中植株个体最大之一，萼片和花瓣先端急渐尖，唇瓣中裂片近菱形，其上面无褶片，易于识别。
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Rhizome 4-6 mm in diam., usually branched, covered with many tubular sheaths; sheaths chestnut, ca. 2 cm, papery. Pseudobulbs borne 3-14 cm apart from one another, golden yellow when dried, ovoid or elliptic, 20-50 × 7-20 mm, 2-leaved, enclosed in membranous sheaths. |
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Leaf blade elliptic or oblong-elliptic, 6-22.5 × ca. 5.5 cm, leathery, base contracted into petiole ca. 3 cm, apex ± obtuse and retuse. |
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Inflorescence much shorter than leaves, 1-flowered; peduncle 1.5-2 cm, enclosed in 2 sheaths; floral bracts 1-1.7 cm. Flowers spreading, yellowish green, spotted with deep brown, large; pedicel and ovary 4.5-5 cm. Dorsal sepal lanceolate, (35-)45-65 × ca. 8 mm, acute; lateral sepals falcate-lanceolate, ca. 45 × 11-15 mm, acute-acuminate. Petals lanceolate, ca. 14 × 6 mm, acute-acuminate; lip pandurate in outline, ca. 26 mm, 3-lobed; lateral lobes erect, small; mid-lobe subrhombic, ca. 6 mm, ca. as wide as or slightly wider than disk and lateral lobes, obtuse and mucronate; disk with 3 lamellae, median slightly longer. Column ca. 15 mm, stout, foot ca. 14 mm. Fl. Nov. 2n = 40. |
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