Pogonia ophioglossoides (L.) Ker Gawl.

Plants 4–70 cm. Leaves: blade elliptic, narrowly lanceolate, lance-ovate, or oblong, 14–120 × 4–32 mm. Inflorescences: floral bracts conspicuous, foliaceous, 7–37 × 2–12 mm. Flowers solitary or 2-flowered raceme, pink or rarely white or bluish, gaping, showy; sepals oblong, oblong-elliptic, or narrowly lanceolate, 14–23 × 3–7 mm; petals elliptic to lance-obovate, 13–25 × 3–11 mm; lip spatulate, 12–25 × 4–10 mm, margins involute, lacerate; crest often white, yellow, or green toward base. Capsules erect, ellipsoid, 14–30 × 4–8 mm. 2n = 18.