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California Lady's Slipper Back to Plant Page
Cypripedium californicum

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About California Lady's Slipper (Cypripedium californicum) The California Lady's Slipper (Cypripedium californicum) is a member of the orchid genus Cypripedium, the Lady's Slipper orchids. It is native to the western United States, where it has a very restricted range and can only be found in the mountains of southwestern Oregon (Kalmiopsis Wilderness), and northern California. It prefers the margins of woodland streams in ous forests. It often grows in very large clumps and each stem can bear up to 21 flowers. It can grow to be up to over a meter in height and has alternate, plicate leaves the length of the stem. The petals and sepals tend to be greenish-brown while the small pouch is pure white with occasional pink spots.
Plant Description
Plant Type
Perennial herb

Max. Height
2 - 4 ft (0.6 - 1.2 m)

Flower Color
Pink, White, Brown

Native Status
Natural Setting
Site Type
Moist slopes and streambanks

Sun, Part Shade

Elevation ?
29' - 8910'

Annual Precip. ?
22.6" - 133.8"

Summer Precip. ?
0.26" - 4.41"

Coldest Month ?
29.4° F - 51.0° F

Hottest Month ?
47.3° F - 72.8° F

Humidity ?
0.08 vpd - 23.82 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

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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