Plants lithophytic. Stems tufted, densely leafy, to 33 cm, ca. 1.5 mm in diam. Leaves spreading; blade pale green, drying blackish, ovate-oblong to ovate-elliptic or elliptic, 0.8-1.7 × 0.5-0.8 cm, weakly obtusely bilobed, minutely apiculate. Inflorescences usually pseudoterminal, 5-20 × 5-8 mm, successively ca. 20-flowered but usually with 1-3 flowers open at once; floral bracts ovate, 2-2.5 × 1.5-2 mm, acute, deflexed. Flowers white. Dorsal sepal broadly ovate, ca. 2.5 × 1.8 mm, acute, weakly dorsally carinate; lateral sepals broadly obliquely ovate, ca. 3 × 2.1 mm, subacute; mentum rather tapered, ca. 1 mm. Petals oblong-elliptic, ca. 2 × 1-1.1 mm, obtuse to subacute; lip ca. 3 × 2 mm, subglobose in basal half, in upper half a broadly ovate, subacute epichile; callus retrorse, varying from fleshy, prostrate, flattish, and subquadrate to thinly fleshy, erect, cupulate-concave, and transversely elliptic. Column ca. 1.5 mm including ca. 0.9-mm-long rostellum; foot ca. 1 mm; anther cap lacking a distinct median umbo. Fl. Apr-May.
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