Glabrous, stout perennial with one to three tubers 1.5-4.5 cm long with a few fibrous roots. Stems erect, 15-70 cm tall. Basal leaves two to three (rarely four), oblanceolate with blunt tips, 6-30 cm long, 1-1.75 cm wide. Stem leaves bract-like, appearing early in spring but generally withering before flowering time. Flowers numerous in a terminal spike-like raceme, 3-40 cm long, white to pale green, with only the upper sepal and petals at all greenish; the spur green-tipped, 1-2 cm long; sepals 4-6.5 cm long, lanceolate, mid-vein dark green the upper sepal more or less erect, petals 4-6 cm long, lanceolate, white or pale green with green mid-vein or base, spreading to erect; orifice square to broadly rectangular, lip 3.5-6.5 mm long, lanceolate, more or less curved downward; spur 6-14 mm long, pointed downward; column oblong, about twice as long as wide; sweet-smelling (vanilla-like). Fruits ascending to erect, elliptic capsules to 1 cm long (Douglas et al., 2001; Pojar and MacKinnon, 1994). Photo by Moralea Milne.