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Calypso bulbosa
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Fairy Slipper
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Calypso bulbosa

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About Fairy Slipper (Calypso bulbosa) The Calypso orchid (Calypso bulbosa), also known as the fairy slipper or Venus's slipper, is a perennial member of the orchid family found in undisturbed northern and montane forests. It has a small pink, purple, pinkish-purple, or red flower accented with a white lip, darker purple spottings, and yellow beard. It is the only species currently classified in the genus Calypso, which takes its name from the Greek signifying concealment, as they tend to favor sheltered areas on conifer forest floors. The specific epithet, bulbosa, refers to the bulb-like corms.
Plant Description
Plant Type
Perennial herb

Max. Height
7.2 in (18.3 cm)

Flower Color
Pink, Yellow, White, Purple, Red

Native Status

Natural Setting
Site Type
Moist places


Elevation ?
13' - 6250'

Annual Precip. ?
20.7" - 146.1"

Summer Precip. ?
0.41" - 5.07"

Coldest Month ?
34.1° F - 48.8° F

Hottest Month ?
53.2° F - 71.7° F

Humidity ?
0.03 vpd - 21.11 vpd

Sunset Zones ?
1, 4, 5, 6, 7, 15, 16, 17

Landscaping Information
Other Names
Botanical Names
Calypso bulbosa var. occidentalis

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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