疏花羊耳蒜 shu hua yang er suan

Herbs, epiphytic. Pseudobulbs ovoid to subglobose, 8-12 × 8-12 mm, partially enclosed by 2 or 3 whitish papery sheaths. Leaves 1 or 2, ligulate-oblanceolate, 4-9 × 0.9-1.6 cm, base contracted, apex acute. Inflorescence 8-12 cm; peduncle 4-6 cm, winged; rachis flexuous, 2-6 cm, laxly 4-8-flowered; floral bracts broadly ovate, to 7 mm, apex acuminate. Flowers white with green tint to pale greenish, lip with deep green median stripe; pedicel and ovary 6-8 mm. Dorsal sepal oblong, 5-5.5 × ca. 1.5 mm, apex obtuse; lateral sepals oblong, 5-5.5 × ca. 2 mm, apex obtuse. Petals linear, 5-6 × 0.5-0.7 mm, apex obtuse; lip strongly recurved at middle, oblong-rectangular, 6-7 × 2.5-3 mm, deeply channeled lengthwise, base with 2 conic paired calli, apex truncate with slightly irregular margin. Column arcuate, 4.5-5 mm, not or very narrowly winged at apex. Fl. Oct.

Montane forests; ca. 1200 m. Hainan [Vietnam].