白柱万代兰（中国兰花全书）
白花万代兰（中国高等植物图鉴）
Vanda brunnea Rchb. f. in Xen. Orch. 2: 138. 1868; Hook. f., Fl. Brit. Ind. 6: 54. 1890; Seidenf. in Opera Bot. 95: 201, fig. 124, 125. 1988; Z. H.Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 296. 1995.——V. henryi Schltr. in Fedde Repert. Sp. Nov. 17: 71. 1921; S. Y. Hu in Quart. J. Taiwan Mus. 28 (1, 2) 178. 1975; 中国兰花全书: 175. 1998.——V. denisonian var. hebraica Rchb. f. in Gard. Chron. 2: 39. 1885; S. J. Cheng et C. Z. Tang in Acta Bot. Yunnan. 8 (2): 217. 1986. ——V. bensonii auct. non Batem: W. W. Smith in Not. Bot. Gard. Edinb. 13: 211. 1921; S. Y. Hu in Quart. J. Taiwan Mus. 28 (1, 2): 177. 1975; S. J. Cheng et C. Z. Tang in Acta Bot. Yunnan. 8 (2): 216. 1986. ——V. denisoniana auct. non Benson et Rchb. f.: 中国高等植物图鉴 5: 770. 图8369. 1976. ——V. coerulescens auct. non Griff. ex Lindl.: Z. H. Tsi, S. C. Chen et K. Mori, Wild Orch. China: 113, pl. 281. 1997.
On tree trunks in open forests or at forest margins; 800-2000 m. S Yunnan [Myanmar, Thailand, Vietnam].
This species is similar to Vanda bensonii Batem.and V.denisoniana Benson et Rchb.f. The difference is that the labial lobes of the former are narrowly lanceolate or triangular, while the flowers of the latter are pure white or lemon yellow, and the sepals and petals have no obvious reticular pattern. Some scholars believe that V. denisoniana Benson et Rchb. f. is also distributed in Yunnan, China, we believe that it may be an identification error.
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Stems ca. 15 cm, 1-1.8 cm in diam. |
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Leaf blade 22-30(-35) × 1.7-3 cm, thick, apex unequally 2-lobed. |
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Inflorescences 1-3, 10-20(-25) cm, sparsely 3-5-flowered; peduncle 7-18 cm; floral bracts broadly ovate, 3-4 × 3-3.5 mm, apex obtuse. Flowers thickly textured, widely opening, 3.5-4 cm in diam.; pedicel and ovary white, 55-90 mm; sepals and petals abaxially white, adaxially yellowish green or yellowish brown tessellated with purplish brown. Sepals subsimilar, lateral sepals slightly wider than dorsal, spatulate, 22-25(-27) × 14-17 mm, base clawed, apex rounded. Petals spatulate, 19-22 × 9-12 mm, base clawed, apex rounded; lip shorter than sepals, fleshy, spurred; lateral lobes erect, white or yellowish white, broadly ovate, 7-9 × 7-8 mm, apex obtuse; mid-lobe yellowish green or pale brown, with white base and 2 brownish red stripes on both basal sides, pandurate, 16-18 × 7-8 mm, base with a pair of calli, apex broadly emarginate; spur white, broadly conic, 6-7 × 0.5-0.6 mm, apex acute-obtuse. Column white and slightly tinged with pale purple, 5-7 mm; anther cap yellowish white, 5-6 mm wide; pollinia ca. 2 mm in diam.; stipe subovate-triangular, ca. 4 mm; viscidium oblate, 4-5 mm wide. Fl. Mar.
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