Japan Flora: Pseudobulbs ovoid-globose, about 10 mm. long; leaves 2, sometimes solitary, terminal on the pseudobulb, oblong, 10-12 cm. long, 3-5 cm. wide, acute to abruptly acuminate, 3-nerved and with intervening veinlets, deep green with rather large dark purple spots above, purplish beneath, the petioles 4-6 cm. long; scapes slender, erect, 25-40 cm. long, with 2 sheathing scales; racemes loosely few-flowered, 8-10 cm. long, glabrous; flowers ascending, not fully open, 18-20 mm. long, the bracts lanceolate, membranous, 4-6 mm. long; sepals ascending, linear-oblanceolate, 18- 20 mm. long, acute, narrowed at base, yellowish brown with purple striations; petals linear, 14-16 mm. long, acute, closely contiguous with the dorsal sepal; lip as long as the petals, linear, embracing the lower part of the column, barely inflated at base, white, 3-lobed, the lateral lobes erect, lanceolate, much smaller than the terminal one, the terminal lobe obovate, about 5 mm. long, rounded at apex, undulate on margin; column 12- 13 mm. long. May-June. Woods in foothills;

Hokkaido, Honshu, Shikoku; rare.