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Plains Evening Primrose
Camissonia contorta
About Plains Evening Primrose (Camissonia contorta) 0 Nurseries Carry This Plant Camissonia contorta is a species of evening primrose known by the common name plains evening primrose. It is native to western North America from British Columbia to California to Idaho, where it grows in many habitat types. It is an annual herb producing a slender, bending to curling red or green stem which is sometimes hairy. It is up to 30 centimeters long and erect or spreading out. The blue-green leaves are linear to very narrowly oval in shape and up to 3. 5 centimeters long. The nodding inflorescence produces one or more small flowers. Each has bright yellow petals up to half a centimeter long, sometimes with small red dots near the bases. The fruit is a capsule about 3 centimeters long containing shiny seeds.
Plant Description
Plant Type
Plant Type
Annual herb

1.2 - 11.8 in tall

Flower Color
Flower Color
Yellow, Red

Wildlife Supported

Landscaping Information
Natural Setting
Annual Precipitation: 4.8" - 62.2", Summer Precipitation: 0.15" - 2.83", Coldest Month: 24.9" - 53.5", Hottest Month: 49.8" - 80.4", Humidity: 0.27" - 29.61", Elevation: 25" - 9471"

Alternative Names
Common Names: Contorted Suncup, Plains Evening-primrose, Plains Eveningprimrose

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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