小蓝万代兰 xiao lan wan dai lan

Stems 2-8 cm, 1-1.5 cm in diam. Leaf blade 7-12 × 1-1.3 cm, fleshy, apex praemorse. Inflorescences 1 or 2, 14-36 cm, sparsely 10-16-flowered; peduncle 11-35 cm; rachis not distinctly zigzag, 10-25 cm; floral bracts ovate-triangular, 1.5-3 × 1.5-3 mm, apex acute. Flowers thinly textured, widely opening, 1.5-2.5 cm in diam.; pedicel and ovary white, tinged with pale blue, 1.5-3 cm; sepals and petals pale blue or white tinged with pale blue, not tessellated. Sepals similar, obovate or spatulate, 10-17 × 6-8 mm, base cuneate, apex obtuse. Petals oblanceolate-spatulate, 10-17 × 5-7 mm, base cuneate, apex obtuse; lip deep blue, shorter than sepals, spurred; lateral lobes erect, pale blue, suboblong, 3-4 × 1.5-2.3 mm, apex oblique; mid-lobe dark purple or blue, oblanceolate, 7-9 × 4-6 mm, base with a pair of calli, apex rounded and emarginate; disk centrally often with 3-5 thickened ridges and lateral ones thicker and dilated at apex; spur slightly curved, cylindric, ca. 5 mm, apex obtuse. Column blue, 5-7 mm; anther cap pale yellow, ca. 1.5 mm wide. Fl. Mar-Apr. 2n = 38, 40.

On tree trunks in open forests; 300-1600 m. S and SW Yunnan [NE India, Myanmar, N Thailand].