密花石豆兰（中国高等植物图鉴）
Bulbophyllum odoratissimum (J. E. Smith) Lindl., Gen. Sp. Orch. Pl.: 55. 1830; Hook. f., Fl. Brit. Ind. 5: 758. 1890; King et Pantl. in Ann. Bot. Gard. Calcutta 8: 79, pl. 109. 1898; Rolfe in J. Linn. Soc. Bot. 36: 13. 1903; Schltr. in Fedde Repert. Sp. Nov. Beih. 4: 249. 1919; S. Y. Hu in Quart. J. Taiwan Mus. 25 (1, 2): 62. 1972; 中国高等植物图鉴 5: 734. 图8298. 1976; S. Y. Hu, Gen. Orch. Hong Kong: 86. 1977; H. Hara et al., Enum. Flow. Pl. Nepal 1: 33. 1978; Seidenf. in Dank Bot. Ark. 33 (3): 76, fig. 43. 1979, et in Opera Bot. 114: 297. 1992; Averyanov, Iden. Guide Vietnam. Orch.: 266. 1994; 福建植物志 6: 624. 图546. 1995; 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: 93, pl. 139. 1997. ——Stelis odoratissima J. E. Smith in Ress Cyclop. 34: 12. 1814. ——Bulbophyllum congestrum Rolfe in Kew Bull.: 131. 1912; Schltr. in Fedde Repert．Sp．Nov. Beih. 4: 248. 1919; Seidenf. in Dansk Bot. Ark. 33 (3): 78, fig. 45. 1979. ——Cirrhopetalum trichocephalum Schltr. in Fedde Repert. Sp. Nov. Beih. 4: 72, 255. 1919. ——Bulbophyllum hyacinthiodorum W. W. Smith in Not. Gard. Edinb. 13: 190. 1921.
Tree trunks in mixed forests, rocks along valleys; 200-2400 m. Fujian, Guangdong, Guangxi, S Sichuan, SE Xizang, W to SE Yunnan [Bhutan, NE India, Laos, Myanmar, Nepal, Thailand, Vietnam]. |
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Rhizome creeping or straggling, 2-4 mm in diam., branched, covered with membranous tubular sheaths, rooting from base of pseudobulbs, roots spreading. Pseudobulbs 4-8 cm apart from each other, subcylindric, 2.5-5 cm, 3-6(-9) mm in diam., with a terminal leaf. |
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Leaf subsessile; blade oblong, 4-13.5 × 0.8-2.6 cm, leathery, apex obtuse and slightly emarginate. |
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Scapes 1 or 2, yellowish green, from base of pseudobulb, erect, to 14 cm; raceme often nodding, shortened, umbel-like, densely more than 10-flowered; peduncle 1-3 mm in diam., with 3 or 4 tubular sheaths 8-10 mm; floral bracts whitish, ovate-lanceolate, 7-10 mm, membranous, apex acuminate. Pedicel and ovary shorter than floral bracts. Flowers slightly fragrant; sepals and petals white, later turning into orange in apical half; lip tangerine. Sepals free, thickly textured; dorsal sepal ovate or ovate-lanceolate, 3-7 × ca. 1.5 mm; lateral sepals lanceolate, 4-14 × ca. 2 mm, margins incurved from middle to apex and tubular or subulate in shape, apex obtuse or subacute. Petals subovate or elliptic, 1-2 × 1-1.5 mm, thinly textured, apex subobtuse; lip slightly recurved, ligulate, fleshy, margins with white glandular hairs, adaxially with 2 densely minutely glandular-hairy ridges, base with a short claw attached to end of column foot, apex obtuse. Column ca. 1 mm, stout; stelidia ca. 0.2 mm; foot ca. 1 mm, with free part ca. 0.5 mm; anther cap nearly subglobose or cordate, finely papillate. Fl. Apr-Aug. 2n = 38. |
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