Astragalus harbisonii is a species of short-lived perennial plant in the family Fabaceae commonly known as the Punta Baja milkvetch. It is endemic to the Punta Baja peninsula in the Mexican state of Baja California and the immediate surrounding coastline. It is named after Charles F. Harbison, curator of entomology at the San Diego Natural History Museum from 1942 to 1969. This species is characterized by connate stipules and sessile bladdery pods, traits that it shares with Astragalus anemophilus, but the two species can be distinguished by their indumentum and distinct flowers.

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