Distribution: Occasional, Saskatchewan to Nova Scotia, south to North Dakota and Iowa; Klickitat and Yakima Counties in Washington.
Habitat: Around springs and in bogs.
Flowers: July - August
Conservation Status: Endangered in Washington (WANHP)
Glabrous, scapose perennials from an enlarged crown, the scape 7-20 cm. tall.
Leaves 2, basal, erect, oblong-elliptic, 5-15 cm. long, narrowed to winged petioles.
Inflorescence a several-flowered, terminal, loose, bracteate raceme, the floral bracts linear-lanceolate, 1.5-2.5 mm. long; flowers white to yellowish-green; sepals 3, narrowly lanceolate, spreading, 5-7 mm. long, 3-nerved; 2 smaller petals narrower than the sepals, 4-5 mm. long, 1-nerved; third petal (lip) 4-5 mm. long, oblong-oval, abruptly acute, curved downward, 5-7 veined; stamens and style fused to form a column 2.5 mm. long, very broad at the base.