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Short Woollyheads
Psilocarphus brevissimus
About Short Woollyheads (Psilocarphus brevissimus) 0 Nurseries Carry This Plant Psilocarphus brevissimus is a species of flowering plant in the aster family known by the common names short woollyheads, woolly marbles, and woolly heads. The plant is native to western North America - from southwestern Canada, through California, to northwestern Mexico, as well as in southern South America. It grows in moist flats such as vernal pools, wetlands, and similar areas. It is found from sea level to 8,202 feet (2,500 m). Psilocarphus brevissimus is a small, woolly annual herb growing just a few centimeters tall with a branching stem or multiple stems. The small, gray-green leaves are erect, pointing up parallel to the stem and sometimes appressed to it. The inflorescence is a small, spherical flower head which is a cluster of several tiny woolly disc flowers surrounded by leaflike bracts but no phyllaries. Each tiny flower is covered in a scale which is densely woolly with long white fibers, making the developing head appear cottony. Varieties: There are two varieties of Psilocarphus brevissimus:Psilocarphus brevissimus var. brevissimus - formerly Psilocarphus globiferusPsilocarphus brevissimus var. multiflorus (Delta woolly marbles) - limited to the Sacramento - San Joaquin River Delta and surrounding parts of the Central Valley of California. This is an uncommon plant associated with vernal pools.
Plant Description
Plant Type
Plant Type
Annual herb

1.2 in tall

Landscaping Information
Natural Setting
Annual Precipitation: 6.6" - 122.2", Summer Precipitation: 0.15" - 3.67", Coldest Month: 27.7" - 56.1", Hottest Month: 56.8" - 80.9", Humidity: 0.39" - 29.29", Elevation: 4" - 7635"

Alternative Names
Common Names: Woolly Heads, Woolly Marbles

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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