Japan Flora: Slender glabrous perennial with creeping rhizomes; leaves solitary, broadly ovate, flat, 1.5-3 cm. long, 1-2.5 cm. wide, obtuse, rounded to subcordate at base, the petioles 2-5 cm. long; scapes slender, 10-20 cm. long, with 2 sheathing scalelike leaves in lower part; racemes 1-3 cm. long, loosely 2- to 7-flowered, the bracts membranous, about 1 mm. long; flowers horizontally spreading or nodding, yellowish green; sepals narrowly oblong, about 5 mm. long, obtuse, 3-nerved; petals slightly shorter than the sepals; lip short- clawed at base, abrupdy dilated above, the limb about as long as the sepals, flat, entire, oblong-ovate, slightly recurved, with a fleshy, callose protuberance on each side at base; column about 2/3 as long as the sepals; ovary pedicelled; capsules pendulous, clavate-fusiform, 8-10 mm. long. July-Aug. Mossy places in coniferous woods in mountains;

Hokkaido, Honshu (centr. and n. distr.). Sakhalin, and s. Kuriles.

Russia Flora: Plant to 20 cm. Root creeping, slender, thread-like. Stem thin, delicate, with 2 basal membranous sheaths and 1 basal leaf to 3 × 2.5 cm, broadly ovate, reticulate-veined, petiole to 3 cm. Inflorescence raceme, lax, 2-4 greenish-yellow flowers. Bracts to 1.2 mm, blunt, toothed, translucent, shorter than pedicels. Sepals to 5.5 × 2.2 mm, oblong-elliptic, 3-veined, blunt. Petals shorter. Lip to 5.5 × 2.5 mm, directed downward, oblong-ovate, entire, with 2 callose thickenings and short appendages at base. Capsule to 1 mm, clavate-fusiform.

Distribution: North Sakhalin, Buryatia, Ussuri, South Sakhalin, South Kuriles; reported for Amgun and North Kuriles (Rasshua Island). Moist sites, sphagnum cushions in coniferous forests, stone-birch woods. Flowering July-September. Rare. General: Japan-China. Described from Sakhalin.