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Eriastrum diffusum
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Miniature Eriastrum
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Eriastrum diffusum

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About Miniature Eriastrum (Eriastrum diffusum) Eriastrum diffusum is a species of flowering plant in the phlox family known by the common name miniature woollystar. It is native to the southwestern United States from California to Texas, where it grows in many types of open habitat. This is an annual herb producing a thin, usually woolly stem up to about 20 centimeters long, growing erect or spreading outward. The leaves are divided into 2 to 4 narrow, threadlike linear lobes. The flower cluster is a woolly cluster of narrow, leaflike leafs laced with webby fibers. The small flowers are funnel-shaped, with yellowish throats and white to pale blue corollas.
Plant Description
Plant Type
Annual herb

Max. Height
1.2 - 7.9 in (3 - 20.1 cm)

Native Status

Natural Setting
Site Type
Open sandy places


Elevation ?
-75' - 7528'

Annual Precip. ?
3.0" - 24.9"

Summer Precip. ?
0.22" - 2.73"

Coldest Month ?
31.6° F - 61.4° F

Hottest Month ?
62.1° F - 89.0° F

Humidity ?
1.66 vpd - 42.79 vpd


Landscaping Information
Nursery Availability
Rarely Available

Other Names
Common Names
Miniature Woollystar

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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