Distribution: Washington south to California, east to Idaho.
Habitat: Moist to swampy areas.
Conservation Status: Sensitive in Washington (WANHP)
Glabrous, herbaceous perennials from enlarged, fleshy roots, the stems 1-6 dm. tall.
Leaves several near the base of the stem, linear to oblong, 8-20 cm. long and 5-10 mm. broad, abruptly transitional upward to short, sheathing, lanceolate bracts.
Inflorescence a dense spike 3-12 cm. long, the flowers cream to greenish-white, aligned in 1-4 spiralling, vertical rows; floral bracts 10-20 mm. long, about equal to the tubular flowers, whitish; sepals viscid-pubescent, the upper one and the petals subequal, fused into a curved, tubular hood 7-12 mm. long; lip sharply reflexed, about as long as the sepals, nearly triangular, not constricted below the tip, the base with prominent protuberances; column bearing the single anther 2-4 mm. long with a slender, forked terminal beak; ovary inferior