Calypso bulbosa (L.) Oakes

Plants 4.5–22 cm. Leaves: blade elliptic to suborbiculate or ovate, often cordate, 10–65 × 12–52 mm. Inflorescences: floral bracts lance-acuminate, 5–28 mm. Flowers pink, magenta, or rarely white; sepals and petals erect-spreading, linear-lanceolate to linear-oblong, 10–24 × 1.5–5 mm; lip 13–23 × 4–13 mm, lamina shorter than to longer than apical horns, basal bristles sparse to extensive, brightly and contrastingly colored to dull and obscure. Capsules erect, ellipsoid to lanceoloid, 2–3 × 1–1.5 cm. 2n = 28 [var. bulbosa].

It is a cold temperate plant. It forms dense colonies in damp areas in coniferous forests. They are frost tolerant. It requires cool conditions. It grows in Arctic regions and in the Rocky Mountains. In Canada it grows from sea level to 1,400 m altitude. In Sichuan and Yunnan.

The corms are boiled and eaten.

It can be grown in a mixture of leaf mould and coarse sand. It should be watered during its growing stages.