节茎石仙桃（西藏植物志）
Pholidota articulata Lindl., Gen. Sp. Orch. Pl. 38. 1830, et in Bot. Reg. 25: Misc. 57. 1839; Hand. ——Mazz., Symb. Sinic. 7: 1350. 1936; S. Y. Hu in Quart. J. Taiwan Mus. 28 (1, 2): 126. 1975; Seidenf. in Opera Bot. 89: 96. fig 54. 1986, et 114: 122. 1992;西藏植物志5: 863.图479.1987; E. F. de Vogel in Orchid Monogr. 3: 21. fig. 8. pl. 2 (a, b). 1988;横断山区维管植物2: 2578.1994; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 295. 1995;中国兰花全书204.图6-23 (1-3). 1998. ——Pholidota khasiana Rchb. f. in Bonplandia 4: 329. 1856. ——Coelogyne khasiana (Rchb. f.) Rchb. f. in Walp. Ann. 6: 238. 1861. ——Coelogyne articulata (Lindl.) Rchb. f., l. c. ——Pholidota grifithii Hook. f. in Hook. Icon. Pl. 19: t. 1881. 1889. ——Pholidota obovata Hook. f., Fl. Brit. Ind. 5: 845. 1890. ——Pholidota lugardii Rolfe in Kew Bull. 6. 1893.——Pholidota articulata var. grifithii (Hook. f.) King et Pantl. in Ann. Bot, Gard. Calcutta 8: 147. Pl. 204. 1898. ——Pholidota articulata var. obovata (Hook. f.) T. Tang et F. T. Wang in Acta Phytotax. 1(1): 79. 1951.
Epiphytic on trees in forests, lithophytic on shaded rocks; 800-2500 m. SW Guizhou, SW Sichuan, SE Xizang, NW to SE Yunnan [Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand, Vietnam].
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Pseudobulbs connected to each other at both ends and stemlike, subcylindric, (2-)4-12 cm × 5-10(-25) mm, sometimes slightly narrowed, branching or not, sometimes with very short rhizomes between them and producing a few roots. |
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Leaves 2, at apex of new pseudobulb; leaf blade obovate-elliptic, oblong, or narrowly elliptic, 7-17.5 × 2.7-6.2 cm, veins plicate, subacute or obtuse; petiole 1-1.5 cm. |
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Inflorescence at apex of newpseudobulb, 6-18 cm; rachis 10- or more flowered, ± flexuous; floral bracts deciduous during flowering, narrowly ovate-oblong, 1.5-2.5 × 0.5-0.7 cm. Flowers greenish white or white and slightly tinged with reddish; pedicel and ovary 6-7 mm. Dorsal sepal oblong or elliptic, concave, 9-10 × 4-5 mm, dorsally carinate, 5-veined; lateral sepals ovate, oblique, slightly wider than dorsal sepal. Petals oblong-lanceolate or suboblanceolate, ca. 7 × 2-2.5 mm, 5-veined; lip broadly oblong in outline, contracted at apical 1/4-1/3 into epichile and hypochile; hypochile cymbiform, slightly wider than epichile, with 5 longitudinal lamellae near base; epichile transversely elliptic, 3-4 mm wide, margin crisped. Column 2.5-3 mm, ca. 1 mm wide, stout, apex winged; rostellum broadly ovate, 1.4-1.8 mm. |
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Capsule ellipsoid to obovoid-ellipsoid, 1.8-2 cm, slightly 3-ridged; fruiting pedicel ca. 2.5 mm. Fl. Jun-Aug, fr. Oct-Dec. 2n = 38, 38 + 2B, 40, 40 + 2-6B.
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