Underground rhizome creeping, branching repeatedly, lacking normal roots, only with hairs around nodes and internodes. Stem ascending, to 15 cm tall, 2-3 mm thick, terete, light green, leafy at upper half. Leaves green, ovate, apex acute, rounded at base, wavy or minutely toothed at margin, 2-5 cm long 1-2.5 cm wide; petiole 0.5-1.5 cm long. Peduncle green, hairy, to 8 cm long, with 1-3 sheaths, lower sheath often glabrous, upper ones hairy abaxially; floral bracts hairy abaxially, ciliate at margins. Flowers resupinate; ovary green, densely hairy; sepals connate at base, not spreading, hairy and green at base, whitish and glabrous toward apex, dorsal one erect, ovate, 4-5 mm long, connate ca. 1/10 of its length to lateral ones, lateral ones oblong, 5-6 mm long, apex acute, connate for 1/3 length at base and form pouch enclosing saccate base of lip; petals white, falcate, 4-5 mm long; lip white, 7-8 mm long when flattened, hypochile saccate, with 2 papillae within, papilla flat, subrectangular, 0.7 mm tall, mesochile ca. 3 mm long, canaliculate, epichile divergently bilobed, 3-4 mm long, 4.5-5 mm wide; column 2-2.3 mm long; anther obliquely triangular, slightly twisted at apex, 1.3-1.4 mm long; pollinia asymmetrical, 1-1.1 mm long, tapered and joined together at one end, attached to viscidium; stigma semiorbicular; rostellum twisted at apex, with unequal arms; viscidium triangular ovate.

TAITUNG: Lanyu Is., Leou 3452, 3848; Kuoh, 4825; Chang 2259; Lin 132, 267.

Endemic. Lanyu Is.