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Astragalus purshii
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Pursh Loco Milkvetch
( Astragalus purshii )
Astragalus purshii
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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About Pursh Loco Milkvetch (Astragalus purshii)
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Astragalus purshii
is a species of milkvetch known by the common names woollypod milkvetch and Pursh's milkvetch. It is native to much of western North America, including the southwestern provinces of Canada and the northwestern United States, where it is known from many types of habitat. This is a small perennial herb forming clumps on the ground no taller than 14 centimeters. The leaves are up to 15 centimeters long and are made up of many oval or rounded leaflets. Stems and leaflets are coated in woolly white hairs. The flower cluster is a cluster of 1 to 11 pink, purple, or white flowers each between 1 and 3 centimeters long. The fruit is a legume pod up to 3 centimeters long which is coated densely in thick white hairs.
Plant Description
Plant Type
Perennial herb
Size
7.2 in tall
Form
Mounding
Growth Rate
Moderate
Flower Color
White, Pink, Purple
Flowering Season
Spring
Wildlife Supported
Butterflies & moths hosted ( 25
likely
* )
SHOW ALL
*
Painted Lady
Vanessa cardui
Vanessa cardui
*
Acmon Blue
Icaricia acmon
Icaricia acmon
*
Orange Sulphur
Colias eurytheme
Colias eurytheme
*
Silvery Blue
Glaucopsyche lygdamus
Glaucopsyche lygdamus
*
Shasta Blue
Icaricia shasta
Icaricia shasta
*
Silver-Spotted Skipper
Epargyreus clarus
Epargyreus clarus
*
Melissa Blue
Plebejus melissa
Plebejus melissa
Landscaping Information
Sun
Full Sun
Soil Description
Prefers sandy or loamy soils. Does not grow well in clay soils.
Propagation
?
For propagating by seed: No treatment.
Natural Setting
Site Type
Dry flats, slopes
Climate
Annual Precipitation: 5.0" - 119.6", Summer Precipitation: 0.20" - 3.71", Coldest Month: 22.0" - 53.9", Hottest Month: 41.6" - 78.4", Humidity: 0.59" - 31.15", Elevation: 631" - 12253"
Alternative Names
Common Names
: Pursh's Milkvetch, Woollypod Milkvetch
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Pursh Loco Milkvetch
Astragalus purshii
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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