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Bransford, W.D. and Dolphia
Astragalus agrestis Douglas ex G. Don
Field Milk-vetch, Purple milkvetch
Synonym(s): Astragalus danicus var. dasyglottis, Astragalus dasyglottis, Astragalus goniatus, Astragalus hypoglottis
USDA Symbol: ASAG2
USDA Native Status: L48 (N), CAN (N)
A soft green plant tending to grow in patches, with weak stems often leaning on other vegetation, and pink to lavender or purple pea flowers crowded in short heads.
This plant is representative of many of the low Astragalus with purplish or pink flowers; the hundreds of species in the West are difficult to identify. Poisonous species of Astragalus and Oxytropis are known as locoweeds. This species also occurs in Asia
Bloom InformationBloom Color: Purple
Bloom Time: May , Jun , Jul , Aug
, WY Canada: BC
, SK Native Distribution:
Across much of Canada and south to northeastern California, southern Utah, central New Mexico, Kansas, and Iowa. Native Habitat:
Commonly in moist meadows and prairies and on cool brushy slopes.
Growing ConditionsWater Use: Low
Light Requirement: Sun
CaCO3 Tolerance: Low
Although this species has not been reported as poisonous, all plants in the genus
Astragalus are potentially toxic to humans and animals if ingested, causing a disorder called locoism. The milk from an animal that has ingested Astragalus plants may also b Conspicuous Flowers:
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2007-01-01
Research By: TWC Staff