Otochilus albus Lindley Gen. Sp. Orchid. Pl. 35. 1830.

白花耳唇兰 bai hua er chun lan

Coelogyne alba (Lindley) H. G. Reichenbach.

Pseudobulbs enclosed in tubular sheaths when young, brownish yellow when dried, subcylindric, 3.5-4.5 cm × 6-7 mm, grooved, usually with roots at joint. Leaf blade narrowly oblong or narrowly elliptic, 5-16 × 1.3-1.7 cm, acuminate; petiole 1-2 cm. Inflorescence synanthous; peduncle 3-7.5 cm, sheathed; rachis ca. 7 cm, slender, weakly zigzag, laxly 8- or 9-flowered; floral bracts caducous, ovate-lanceolate, ca. 5 × 5 mm. Flowers uniformly white, 1-1.8 cm in diam.; pedicel and ovary 5-6 mm. Dorsal sepal narrowly oblong, 7-8 × 1.4-1.6 mm, 3-veined, acuminate; lateral sepals slightly oblique. Petals narrowly oblong-lanceolate, 6-7 × 1.2-1.5 mm, 3-veined, acute; lip 3-lobed; lateral lobes embracing column, reaching 1/5-1/4 of its length; mid-lobe oblong, ca. 6 mm, adaxially ± papillate, apex apiculate; sac with a thickened longitudinal ridge inside. Column 5-6 mm; rostellum broadly ligulate. Fl. Jun-Jul.

1300-1500 m. SE Xizang [NE India, Myanmar, Nepal, Thailand, Vietnam].