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Calyptridium umbellatum

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About Pussy Paws (Calyptridium umbellatum) Cistanthe umbellata (formerly Calyptridium umbellatum) is a species of flowering plant in the purslane family known by the common name Mount Hood pussypaws. It is native to western North America from British Columbia to California to Colorado, where it grows in a number of habitat types, including in areas inhospitable to many plant types, such as those with alpine climates. It is a perennial herb forming generally two or more basal rosettes of thick, spoon-shaped leaves each a few centimeters long. The inflorescence arises from the rosette, a dense, spherical umbel of rounded sepals and four small petals.
Plant Description
Plant Type
Annual herb, Perennial herb

Max. Height
2 ft (0.6 m)

Native Status

Natural Setting
Site Type
Open, sandy rocky soils,

Sun, Part Shade

Elevation ?
15' - 14113'

Annual Precip. ?
11.5" - 139.9"

Summer Precip. ?
0.29" - 4.99"

Coldest Month ?
10.8° F - 48.4° F

Hottest Month ?
34.1° F - 74.1° F

Humidity ?
0.38 vpd - 22.68 vpd


Landscaping Information
Propagation ?
For propagating by seed: 1 mo. stratification.

Other Names
Botanical Names
Calyptridium umbellatum var. caudiciferum|Calyptridium umbellatum var. umbellatum

Common Names
Mount Hood Pussypaws

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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