Calypso bulbosa |
Orchidaceae tribe Calypsoeae |
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calypso, calypso orchid, fairy-slipper, fairy-slipper orchid, Venus' slipper |
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Habit | Plants 4.5–22 cm. | |||||
Leaves | blade elliptic to suborbiculate or ovate, often cordate, 10–65 × 12–52 mm. |
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Inflorescences | floral bracts lance-acuminate, 5–28 mm. |
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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. |
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Capsules | erect, ellipsoid to lanceoloid, 2–3 × 1–1.5 cm. |
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2n | = 28 [var. bulbosa]. |
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Calypso bulbosa |
Orchidaceae tribe Calypsoeae |
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Distribution |
North America; Circumpolar; Europe; Asia (China, Japan, Russia)
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Discussion | Varieties 3 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 623. | FNA vol. 26. | ||||
Parent taxa | Orchidaceae > subfam. Epidendroideae > tribe Calypsoeae > Calypso | Orchidaceae > subfam. Epidendroideae | ||||
Subordinate taxa | ||||||
Synonyms | Cypripedium bulbosum, Cytherea bulbosa | |||||
Name authority | (Linnaeus) Oakes: in Z. Thompson, Nat. Hist. Vermont 1: 200. (1842) | Dressler: Selbyana 5: 204. (1979) | ||||
Web links |