大花万代兰（中国高等植物图鉴）
Vanda coerulea Griff. ex Lindl. in Bot. Reg. 33: sub t. 30. 1847; Rchb. f. in Walp. Ann. Bot. Syst. 6: 868. 1863; Hook. f., Fl. Brit. Ind. 5: 51. 1890; 中国高等植物图鉴 5: 770. 1976; S. J. Cheng et C. Z. Tang in Acta Bot. Yunnan.8 (2): 216. 1986; Seidenf. in Opera Bot. 95: 196, fig. 120. 1988; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 296. 1995; Z. H. Tsi, S. C. Chen et K. Mori, Wild Orch. China: 114, pl. 282. 1997; 中国兰花全书: 175. 1998.
On tree trunks in open forests or along rivers; 1000-1600 m. S Yunnan [NE India, Myanmar, N Thailand]. |
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Stems 5-23 cm, 0.8-1.5 cm in diam. Leaf blade (7-)14-18 × 1.3-2(-3) cm, thickly leathery, apex unequally 2-lobed. |
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Inflorescences 1-3, 20-42 cm, sparsely (4-)6-14-flowered; peduncle 16-22 cm; rachis weakly zigzag, 9-28 cm; floral bracts broadly ovate, 8-11 × 5-9 mm, apex obtuse-acute. Flowers thinly textured, widely opening, 6-9 cm in diam.; pedicel and ovary white, tinged blue, 45-60 mm; sepals and petals sky-blue, tessellated. Sepals similar, broadly obovate, 35-50 × 17-35 mm, base contracted into short claw, apex rounded. Petals elliptic-obovate, 30-45 × 18-25 mm, base contracted into a short claw, apex rounded; lip sky-blue, shorter than sepals, fleshy, spurred; lateral lobes erect, narrowly falcate, adaxially white with yellow spots, 3.5-5 × 1-2 mm, apex subacuminate; mid-lobe deep blue, ligulate, 17-25 × 5-8 mm, base with a pair of calli, apex subtruncate and emarginate; disk with 3 longitudinal ridges; spur tubular, slightly conic, 5-7 × 2-3 mm, apex obtuse. Column 4-6 mm; anther cap white, ca. 2 mm wide. Fl. Oct-Nov. 2n = 38. |
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