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 Cirsium occidentale, by Albert Valentien

Cirsium occidentale (California Thistle)
Painted by Albert Valentien
© San Diego Natural History Museum

Cirsium occidentale

The California Thistle, Cirsium occidentale var. californicum, has grayish-green leaves with spiny teeth, and white, purple or rose colored flowers. It is found in disturbed areas such as vacant lots and roadsides, as well as chaparral, coastal sage scrub, and open areas of woodlands. Thistles are in the Asteraceae or sunflower family. Painted Lady butterflies use species of Cirsium as host plants.

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

Text by Margaret Dykens