Stout, mostly 2–4 dm; scape with 4–7 bracts; lf-blades lance-ovate to narrowly elliptic, 3–6 cm, usually white only along the midstrip, seldom also on some of the other veins; infl a loose to often rather tight spiral; galea 5–10 (avg 7.5) mm; lip 5–8 (avg 6) mm, with a deeply concave base tapering to a spreading or slightly recurved boat-shaped tip with involute or upright margins; anther acuminate, evidently surpassed by the 2.3–3.6 mm rostellar beak; 2n=30. Dry or moist, hardwood or coniferous forests; P.E.I. and the Gaspé Peninsula to n. Vt.; vicinity of lakes Superior and Huron and n. Lake Michigan; widespread in the w. cordillera. July–Sept. (G. decipiens; Epipactis d.; Peramium d.)
An evergreen herb. It grows 40 cm tall. The leaves are in a ring at the base. There are 3-7 leaves in the ring. They are oblong and 3-8 cm long by 2-4 cm wide. They are dark green. The flowers are dull white. They are in spikes at the top of the plant.