密茎贝母兰（新拟）
Coelogyne nitida (Wall. ex D. Don）Lindl., Coll. Bot. sub. t. 33. 1821, non (Roxb. )Hook. f. (1890); Finet in Bull. Soc. Bot. France 45: 412. 1898; S. Y. Hu in Quart. J. Taiwan Mus. 25 (3, 4): 225. 1972; Seidenf. in Dansk Bot. Ark. 29 (4): 53. fig. 20. 1975, et Opera Bot. 114: 113. 1992; Averyanov, Iden. Guide Vietnam. Orch. 130. 1994; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 290. 1995. ——Cymbidium nitidum Wall. ex D. Don, Prodr. Fl. Nepal. 35. 1825, non Roxb. (1832). ——Coelogyne ochracea Lindl. in Bot. Reg. 32: t. 69. 1846; Hook. f. in Gurtis’s Bot. Mag. 78: t. 4661. 1852. ——Coelogyne ochracea Lindl. subsp. conferta Parish et Rchb. f. in Trans. Linn. Soc. 30: 146. t. 30. 1874. ——Coelogyne punctulata Lindl. var. con ferta (Par. et Rchb. f.) T. Tang et F. T. Wang in Acta Phytotax 1 (1): 78. 1951, ‘punctata’.
On trees in forests in limestone areas; ca. 3100 m. NW, S, and W Yunnan [Bhutan, NE India, Laos, Myanmar, Nepal, Thailand, Vietnam] 本种与眼斑贝母兰C. corymbosa极其相似，除花较小外，其他区别更难掌握，很可能两者应予合并。但由于本种主要分布于国外，而我们缺乏充分的标本进行比较，故暂予保留。 |
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Rhizome stout, 7-8 mm in diam., rigid, with dense, purplish brown, leathery sheaths. Pseudobulbs often 2-3 cm apart on rhizome, bright yellow when dried, oblong or nearly cylindric, 6-12.5 × 1.5-3.2 cm, somewhat attenuate toward apex, with 2 leaves at apex and several sheaths at base; sheaths 5-8 × 2.5-3 cm, leathery, abaxially mottled with purplish brown particularly in central part and basal half. |
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Leaf blade oblong-lanceolate to elliptic-lanceolate, 13-19 × 3-4.5 cm, leathery, apex subacuminate or shortly cuspidate; petiole 4.5-8 cm. Inflorescence heteranthous, 16-32 cm, basal half enclosed in sheaths; rachis 11-21 cm, sparsely 8-10-flowered; floral bracts caducous, obovate-elliptic, ca. 2.5 cm; pedicel and ovary 17-20 mm. |
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Flowers pale yellow to white, with yellow and pale reddish brown spots on lip. Dorsal sepal oblong or oblong-lanceolate, 21-24 × 6-7 mm; lateral sepals slightly narrower, abaxially ± carinate. Petals linear-lanceolate, 20-22 × 2-3 mm; lip subovate, 16-20 × ca. 15 mm, 3-lobed; lateral lobes erect, subovate, apex obtuse; mid-lobe suboblong, 6-7 × ca. 4 mm, margin ± crisped; callus with 3 crisped-incised lamellae extending from base of lip to basal half of mid-lobe. Column slightly arcuate, ca. 13 mm, both sides with wings; wings widened toward column apex, ca. 1.5 mm wide on one side in upper part. Fl. Mar. 2n = 40. |
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