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Eriastrum luteum
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Yellow-flowered Eriastrum
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Eriastrum luteum

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About Yellow-flowered Eriastrum (Eriastrum luteum) Eriastrum luteum is a species of flowering plant in the phlox family known by the common names yellow woollystar and yellow-flowered eriastrum. This wildflower is endemic to California where it is known only from Monterey and San Luis Obispo Counties. This is a small annual rarely reaching the maximum 25 centimeters in height. It has occasional thin, threadlike leaves which are covered in a coat of woolly hairs. The inflorescence is a cluster of leaflike green or reddish bracts strung densely with cobwebby white wool and bearing bright yellow flowers. Each flower has five rounded lobes and long, protruding stamens with large anthers.
Plant Description
Plant Type
Annual herb

Max. Height
0.8 - 9.8 in (2 - 24.9 cm)

Flower Color
White, Green, Red

Native Status
Natural Setting
Elevation ?
901' - 4729'

Annual Precip. ?
12.5" - 42.7"

Summer Precip. ?
0.23" - 0.71"

Coldest Month ?
40.2° F - 53.2° F

Hottest Month ?
65.8° F - 80.1° F

Humidity ?
0.71 vpd - 26.54 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Yellow 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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