Calypso bulbosa

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].

Distribution

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• Legacy Map

Circumpolar, North America, Europe, Asia (China, Japan, Russia).

Discussion

Varieties 3 (2 in the flora).

Selected References

None.

Lower Taxa

Calypso bulbosa var. americana, Calypso bulbosa var. occidentalis

Key

1	Bristles of lip yellow, extensive; lamina white or suffused with pink, usually equaling or longer than horns.	Calypso bulbosa var. americana
1	Bristles of lip whitish or color of lamina, sparse; lamina commonly with reddish markings on dull white, usually shorter than horns.	Calypso bulbosa var. occidentalis