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Spotted Locoweed
Astragalus lentiginosus

About Spotted Locoweed (Astragalus lentiginosus) Astragalus lentiginosus is a species of legume known by the common names spotted locoweed and freckled milkvetch. It is native to western North America, where it grows in many habitat types. There are a great number of wild varieties of this species, and they vary in appearance. The flower and the fruit of a given individual are generally needed to identify it down to the variety. As a species, Astragalus lentiginosus is distributed throughout the Great Basin of North America, west from the Rocky Mountains to the California Coast Ranges, south to Mexico, and north to British Columbia. The varieties are largely limited to marginal habitats such as disturbed sites in the arid regions of the continent. The group also contains a number of edaphic specialists which occur at desert seeps, which frequently exhibit high levels of calcium carbonate. Astragalus lentiginosus is a perennial or occasionally annual herb with leaves up to 15 centimetres (5. 9 inches) long divided into many pairs of small leaflets. The plant is prostrate to erect in form and quite woolly to nearly hairless. The inflorescence holds up to 50 pea-like flowers which may be purplish or whitish or a mix of both.
Plant Description
Plant Type
Annual Herb, Perennial Herb

Max. Height
1.4 ft (0.43 m)


Growth Rate

Flower Color

Flowering Season

Native Status

Natural Setting
Elevation ?
-15' - 12278'

Annual Precip. ?
3.0" - 92.9"

Summer Precip. ?
0.12" - 4.40"

Coldest Month ?
19.9° F - 61.3° F

Hottest Month ?
40.8° F - 88.8° F

Humidity ?
0.53 vpd - 41.44 vpd

Soil Description
Adaptable, tolerant of sand, loam and clay

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Freckled Milkvetch, Specklepod Milkvetch

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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