6. Vanda subconcolor Tang & F. T. Wang, Acta Phytotax. Sin. 12: 48. 1974.
纯色万代兰 chun se wan dai lan
Vanda subconcolor var. disticha Tang & F. T. Wang.
Stems 15-18 cm, 0.7-1 cm in diam. Leaf blade 14-26 × 1.2-2 cm, slightly fleshy, apex unequally 2-lobed with deep sinus and often a small point in center. Inflorescences 1 or 2, 12-17 cm, sparsely 3-6-flowered; peduncle 6-9 cm; rachis weakly zigzag, 5-8 cm; floral bracts broadly ovate, 2.5-3 × 1.8-2.1 mm, apex acute. Flowers thickly textured, widely opening, 3-4 cm in diam.; pedicel and ovary white, 3-7 cm; sepals and petals abaxially white, adaxially yellowish brown, conspicuously tessellated. Dorsal sepal obovate-spatulate, 18-28 × 9-12 mm, base contracted into short claw, apex obtuse; lateral sepals rhombic-elliptic, 20-28 × 14-15 mm, base contracted, margin slightly crisped. Petals obovate-spatulate, 16-25 × 9-11 mm, base contracted into a short claw, apex rounded; lip white, shorter than sepals, spurred; lateral lobes erect, densely spotted with purple, ovate-triangular, 7-9 × 6-7 mm, apex obtuse; mid-lobe yellowish brown at apex, adaxially with 4-6 purplish brown stripes, pandurate-obovate, apex emarginate; disk centrally often with 3-5 small ridges; spur conic, 2.5-3.5 × 2-3 mm, apex obtuse. Column white, 6-7 mm, ca. 3 mm wide. Fl. Feb-Mar. 2n = 38*.
● On tree trunks in open forests; 600-1000 m. Hainan, W Yunnan.