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Widehead Groundsel
Packera eurycephala
About Widehead Groundsel (Packera eurycephala) 0 Nurseries Carry This Plant Packera eurycephala is a species of flowering plant in the aster family known by the common name widehead groundsel. It is native to a section of the western United States encompassing southern Oregon, northern California, and northern Nevada. It can be found in dry habitat types, often in disturbed areas, and it favors serpentine soils. It is a perennial herb reaching a maximum height of 50 to 70 centimeters, its cluster of erect stems growing from a taproot and woody caudex unit. The leaves are up to 10 centimeters long and are made up of many narrow, lacy lobes. The plant is slightly to densely woolly in texture.
Plant Description
Plant Type
Plant Type
Perennial herb

1.6 - 2.3 ft tall

Flower Color
Flower Color

Landscaping Information
Natural Setting
Annual Precipitation: 12.4" - 77.0", Summer Precipitation: 0.29" - 2.24", Coldest Month: 27.9" - 49.9", Hottest Month: 48.2" - 76.4", Humidity: 0.29" - 26.55", Elevation: 98" - 9719"

Alternative Names
Common Names: Lewis' Groundsel

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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