美花石斛  转到中国兰科植物志

Dendrobium loddigesii 分类来源:中国植物志

美花石斛(中国高等植物图鉴)

粉花石斛(中药志)

Dendrobium loddigesii Rolfe in Gard. Chron. ser. 3, 2: 155, 786. 1887, et in J. Linn. Soc. Bot. 36: 12. 1903; Kraenzl. in Engler, Pflanzenr. 45 (IV. 50, II. B. 21): 29. 1910; Schltr. in Fedde Repert. Sp. Nov. Beih. 4: 212. 1919; S. Y. Hu in Quart, J. Taiwan Mus. 26 (1, 2): 157. 1973; 中国高等植物图鉴 5: 698. 图8225.1976; 海南植物志4: 224. 1977; Z. H. Tsi in Acta Phytotax. Sin. 18 (4): 443.1980; Averyanov, Vasc. Pl. Syn. Vietnam. Fl. 1: 68. 1990; Seidenf. in Opera Bot. 114: 232, fig. 147. 1992; Averyanov, Iden. Guide Vietnam. Orch.: 192. 1994; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 291. 1995; Z. H. Tsi, S. C. Chen et K. Mori, Wild Orch. China: 79, pl. 96. 1997; 中国兰花全书: 168. 图6-13 (6). 1998.——D. pulchellum auct. non. Roxb. ex Lindl.: Lindl., Bot. Cab. 2, t. 1935. 1833; Hook. f. in Bot. Mag. 84: t. 5037. 1858.——D. loddigesii Rolfe var. album T. Tang et F. T. Wang in Acta Phytotax. 1 (1): 41, 81. 1951.

Epiphytic on tree trunks in mountain forests, lithophytic on rocks in forests; 400-1500 m. Guangdong (Hong Kong, Luofu Shan), Guangxi, SW Guizhou, Hainan (Baisha), S Yunnan (Mengla, Simao) [Laos, N Vietnam].

 

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Stems often pendulous, cylindric, 10-45 cm, slender, ca. 3 mm in diam., soft, sometimes branched, with many nodes, internodes 1.5-2 cm, golden yellow when dry. 

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Leaves alternate along entire stem, ligulate, oblong-lanceolate, or slightly obliquely oblong, usually 2-4 × 1-1.3 cm, leathery, base sheathing, apex acute and slightly hooked; leaf sheath membranous, veins raised into a lattice when dry; sheath mouth often open when dry. 

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 Inflorescence lateral on upper part of old leafy stem, 1- or 2-flowered; peduncle 2-3 mm; basal sheaths 1 or 2, cupular, short, membranous; floral bracts ovate, ca. 2 mm, membranous, apex obtuse. Pedicel and ovary 2-3 cm. Flowers pale pink or purplish red, adaxial surface of lip golden yellow at center, pale purplish red on edge, column white, front lateral sides with red stripes, anther cap white. Dorsal sepal ovate-oblong, 17-20 × ca. 7 mm, 5-veined, apex acute; lateral sepals lanceolate, 17-20 × 6-7(or more) mm, 5-veined, base oblique, apex acute; mentum subglobose, ca. 5 mm. Petals elliptic, ca. as long as dorsal sepal, 8-9(or more) mm, 3-5-veined, margin entire, apex slightly obtuse; lip suborbicular, 17-20 mm in diam., both surfaces densely pubescent, margin shortly fimbriate, apex emarginate. Column ca. 4 mm; anther cap subconic, densely finely papillate-hairy, front margin irregularly dentate.




Flowering : April-May.

 

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