Fullerton Arboretum, Fullerton, Orange County, CA. 5-02-09. © Joan Avise

California Thistle

Cirsium occidentale var. californicum

Endemic to California

Back to Asteraceae of Orange County, California
Back to Eudicots of Orange County, California
Back to Natural History of Orange County, California


Indian Truck Trail, 5-19-11. © Ron Vanderhoff.

Fullerton Arboretum, Fullerton, Orange County, CA. 5-02-09. © Joan Avise

Limestone Canyon Wilderness Park, Orange County, CA. 6-4-11. © Joan Avise

Limestone Canyon Wilderness Park, Orange County, CA. 6-4-11. © Joan Avise

Fullerton Arboretum, Fullerton, Orange County, CA. 5-02-09. © Joan Avise

Limestone Canyon Wilderness Park, Orange County, CA. 6-4-11. © Joan Avise

Limestone Canyon Wilderness Park, Orange County, CA. 6-4-11. © Joan Avise

Limestone Canyon Wilderness Park, Orange County, CA. 6-4-11. © Joan Avise

Indian Truck Trail, 5-19-11. © Ron Vanderhoff.

Papilio eurymedon on Cirsium occidentale var californicum, 100 yds NE Santiago Peak, 7-3-11. © Ron Vanderhoff.