Stems elongate, prostrate, rooting throughout. Leaves oblong, 1.5-3 cm long, 4-8 mm wide, fleshy, articulated with persistent sheath, green but sometimes with a few purple spots, apex acute or bifid, with a back seta. Racemes 2-3 cm long; bract minute, triangular, ca. 1-1.5 mm long; pedicel and ovary 1-1.3 cm long. Flowers 2 or 3, yellowish, with minute purple dots or irregular blotches; sepals elliptic-oblong, 4.5-7 mm long, 3-4 mm wide, obtuse, concave, lateral ones slightly oblique; petals similar to sepals, flat, slightly narrowed at base; lip adnate to base of column, sac cup-like, 4-7 mm long, 4-5 mm in diam., yellowish, sometimes with purple dots, not or slightly contracted at opening, limb broadly triangular or semiorbicular, whitish but tinged with brown at center, 3-4 mm long, 6-9 mm wide, slightly dentate or serrate or nearly entire, pubescent on disc or only in center; column stout, ca. 2-3 mm long; anther cap ovate-lanceolate, 2.5 mm long; pollinia globose, 0.8 mm in diam., stipe slender, 2 mm long.

TAIPEI: Wulai, Su 748. NANTOU: Chitou, Su 8148*; Meifong, Su & Wu 9570. CHIAYI: Alishan, Kawakami & Mori s. n. Mar 1908. KAOHSIUNG: Dona, Su et al. 7533. TAITUNG: Hsinkangshan, Su & Chen 7713. HUALIEN: Lakulaku, Su & Hsu 8791.

China. Taiwan, common in forests at 500-2,000 m throughout the island.