Astragalus trichopodus is a species of legume known by the common name Santa Barbara milk vetch. It is native to southern California and Baja California, where it grows in several types of open habitat, including in the Transverse Ranges and Mojave Desert.

The species has three subspecies:

Astraglus trichopodus var. antiselli - Antisell's milkvetch

Astraglus trichopodus var. lonchus - Southern California milkvetch

Astraglus trichopodus var. trichopodus - Santa Barbara milkvetch

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