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Astragalus douglasii is a species of milkvetch known by the common name Douglas' milkvetch. It is native to California and Baja California, where it can be found in many types of desert, valley, chaparral and woodlands, and montane habitats. Astragalus douglasii is a bushy perennial herb producing a number of erect or prostrate stems up to a meter long. The abundant leaves are up to 18 centimeters long and are made up of oval-shaped leaflets. The open inflorescence holds up to 30 whitish to pale yellow flowers, each about a centimeter long. Astragalus douglasii is a bushy perennial herb producing a number of erect or prostrate stems up to a meter long. The abundant leaves are up to 18 centimeters long and are made up of oval-shaped leaflets. The open inflorescence holds up to 30 whitish to pale yellow flowers, each about a centimeter long. The fruit is an inflated legume pod up to 6 centimeters long and 3 wide which dries to a thin, papery texture. Varieties: There are three varieties of Astragalus douglasii:A. d. var. douglasii - limited to CaliforniaA. d. var. parishii (Parish's milkvetch) - found throughout the mountain ranges of Southern CaliforniaA. d. var. perstrictus (Jacumba milkvetch) - rare variety limited to San Diego County, California, and northern Baja California
Perennial herb
8 - 40 in Tall
Yellow, White
Foothill Woodland, Joshua Tree Woodland, Valley Grassland, Yellow Pine Forest
Butterflies and moths supported
3 confirmed and 22 likely
Queen Alexandra's Sulphur
Colias alexandra
Harford's Sulphur
Colias harfordii
Western Tailed-Blue
Cupido amyntula
Alfalfa Looper Moth
Autographa californica