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Gairdner's Yampah
Perideridia gairdneri
  
About Gairdner's Yampah (Perideridia gairdneri) 2 Nurseries Carry This Plant Perideridia gairdneri is a species of flowering plant in the carrot family known by the common names common yampah and Gardner's yampah. It is native to western North America from southwestern Canada to California to New Mexico, where it grows in many types of habitat. It is a perennial herb which may approach 1.5 meters in maximum height, its slender, erect stem growing from cylindrical tubers measuring up to 8 centimeters long. Leaves near the base of the plant have blades up to 35 centimeters long which are divided into many narrow, subdivided lobes. Leaves higher on the plant are smaller and less divided. The flower cluster is a compound umbel of many spherical clusters of small white flowers. These yield ribbed, rounded fruits each a few millimeters long. This was an important food plant, even a staple food, for many Native American groups, including the Blackfoot, Paiute, and Cheyenne. The tuberous roots could be eaten like potatoes, roasted, steamed, eaten fresh or dried, made into mush or pinole, used as flour and flavoring, and were also used medicinally. Montana Plant Life
Plant Description
Plant Type
Plant Type
Perennial herb

Size
Size
4 - 5 ft tall

Form
Form
Upright

Growth Rate
Growth Rate
Moderate

Flower Color
Flower Color
White

Flowering Season
Flowering Season
Spring

Wildlife Supported
 


 
Butterflies & moths hosted ( 1 confirmed , 1 likely * ) SHOW ALL
*
Epermenia cicutaella Image
Epermenia cicutaellaEpermenia cicutaella

Landscaping Information
Sun
Sun
Full Sun

Nurseries
Nurseries

Soil Description
Soil Description
Prefers loamy or clay soils. Grows poorly in sandy soils.

Natural Setting
Site Type
Site Type
Moist meadows, stream banks

Climate
Climate
Annual Precipitation: 11.8" - 133.0", Summer Precipitation: 0.17" - 4.57", Coldest Month: 23.3" - 56.2", Hottest Month: 47.5" - 77.2", Humidity: 0.04" - 22.39", Elevation: 1" - 10067"

Alternative Names
Common Names: Common Yampah, Gardner's Yampah, Squaw Root


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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