San Diego Natural History Museum--Your Nature Connection[BRCC San Diego Natural History Museum: Research Library]
Plants that Attract Butterflies, A Gallery of Paintings by Albert Valentien

Painting of Astragalus oocarpus, by Albert Valentien

Astragalus oocarpus (San Diego Milk Vetch)
Painted by Albert Valentien
© San Diego Natural History Museum

Astragalus oocarpus

Astragalus oocarpus, the San Diego Milk Vetch, is considered a rare plant, endemic to San Diego County. Found in chaparral at the edges of meadows, it is often confused with Astragalus douglasii when not in fruit, since the plants look very similar. San Diego Milk Vetch has very distinctive, short pods however. The genus Astragalus contains the familiar Loco Weed. Harford's Sulfur butterflies use species in the genus Astragalus as host plants.

Introduction to Valentien Collection
Gallery of Plants
Monarca: A Gallery of Butterfly Plants

Text by Margaret Dykens