流苏石斛（中国高等植物图鉴）
Dendrobium fimbriatum Hook., Exot. Fl. 1: t. 71. 1823; Lindl., Gen. Sp. Orch. Pl. : 83. 1830; Hook. f., Fl. Brit. Ind. 5: 745. 1890; Finet in Bull. Soc. France 45: 412. 1898; Kraenzl. in Engler, Pflanzenr. 45 (IV. 50, II. B. 21): 44. 1910; S. Y. Hu in Quart. J. Taiwan Mus. 26 (1, 2): 155. 1973; H. Hara et al., Enum. Flow. Pl. Nepal 1: 39. 1978; Z. H. Tsi in Acta Phytotax. Sin. 18 (4): 439. 1980; Seidenf. in Opera Bot. 83: 36, fig. 16. 1985; Averyanov, Vasc. Pl. Syn. Vietnam. Fl. 1: 72. 1990; Seidenf., l. c. 114: 227. 1992; Averyanov, Iden. Guide Vietnam. Orch. : 190. 1994; Z. H. Tsi et S. C. Chen, l, c. 33 (3): 291. 1995; Z. H. Tsi, S. C. Chen et K. Mori, Wild Orch. China: 74, pl. 85. 1997; 中国兰花全书: 163. 图6-12 (2). 1998.——D. fimbriatum var. oculatum Hook. f. in Bot. Mag. 71: t. 4160. 1845.
Epiphytic on tree trunks in dense forests, lithophytic on damp rocks in mountain valleys; 600-1700 m. NW to S Guangxi, S Guizhou, S Yunnan [Bhutan, India, Myanmar, Nepal, Thailand, Vietnam]. |
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Leaves oblong or oblong-lanceolate, 8-15.5 × 2-3.6 cm, leathery, with tightly clasping leathery sheaths at base, apex acute, sometimes slightly bilobed. |
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Stems rigid, decumbent or pendulous, cylindric or sometimes slightly fusiform above base, 50-100 cm, stout, 8-12(-20) mm in diam., unbranched, with many nodes, internodes 3.5-4.8 cm, longitudinally grooved, pale yellow or pale yellowish brown when dry. |
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Inflorescences racemose, 5-15 cm, laxly 6-12-flowered; peduncle 2-4 cm; rachis thin, ± curved; basal sheaths several, overlapping, tubular, basal one shortest, ca. 3 mm, terminal ones to 10 mm, membranous; floral bracts ovate-triangular, 3-5 mm, membranous, apex acute. Pedicel and ovary pale green, 2.5-3 cm. Flowers slightly fragrant, spreading, thinly textured; sepals and petals golden yellow, lip a deeper hue, with purplish red stripes on either side at base, disk with a lunate transverse deep purple marking. Dorsal sepal oblong, 13-18 × 6-8(or more) mm, 5-veined, margin entire, apex obtuse; lateral sepals ovate-lanceolate, ca. as long as dorsal sepal and slightly narrower, 5-veined, base oblique, margin entire, apex obtuse; mentum rotund, ca. 3 mm. Petals oblong-elliptic, 12-19 × 7-10(or more) mm, 5-veined, margin slightly erose, apex obtuse; lip suborbicular, 15-20 mm, adaxially densely pubescent, base narrowed into a claw ca. 3 mm, margin compound fimbriate. Column ca. 2 mm, foot ca. 4 mm; anther cap conic, glabrous, front margin denticulate. Flowering April-June.
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