Japan Flora: Rhizomes slender, creeping; stems erect, 5-18 cm. long, slender, usually 2-leaved above the middle, the lower portion glabrous, the upper portion loosely glandular-puberulent; leaves 2} deltoid to deltoid- cordate, 1-2 cm, long, 0.7-2 cm. wide, sessile, acute or mucronate, broadly truncate to shallowly cordate at base; scalelike leaves absent; flowers 2-5, very loose, purplish green, with reflexed perianth-segments 2.3-3 mm. long; sepals obtuse, narrowly ovate, the lateral ones narrowly oblong; petals linear- oblong, obtuse, the lip 2.5-3 times as long as the sepals, 5.5-8.5 mm. long, cuneate, bilobed, with rather acute auricles embracing the column near the base, the lobes linear-oblong, 3-5 mm. long; capsules 3 mm. long, long-pedicelled. Apr.-May. Woods in mountains;

Honshu, Shikoku, Kyushu; rather rare. Ryukyus.