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California Thistle Cirsium occidentale var. californicum Endemic to California Back to Asteraceae of Orange County, California |
 Indian Truck Trail, 5-19-11. © Ron Vanderhoff. |
%20Fullerton%20Arboretum.%205-02-09%20216.jpg) Fullerton Arboretum, Fullerton, Orange County, CA. 5-02-09. © Joan Avise |
%20Limestone%20Canyon%20Wilderness%20Park%206-4-11%20217.jpg) Limestone Canyon Wilderness Park, Orange County, CA. 6-4-11. © Joan Avise |
%20Limestone%20Canyon%20Wilderness%20Park%206-4-11%20095.jpg) Limestone Canyon Wilderness Park, Orange County, CA. 6-4-11. © Joan Avise |
%20Fullerton%20Arboretum.%205-02-09%20221.jpg) Fullerton Arboretum, Fullerton, Orange County, CA. 5-02-09. © Joan Avise |
%20Limestone%20Canyon%20Wilderness%20Park%206-4-11%20094.jpg) Limestone Canyon Wilderness Park, Orange County, CA. 6-4-11. © Joan Avise |
%20Limestone%20Canyon%20Wilderness%20Park%206-4-11%20082.jpg) Limestone Canyon Wilderness Park, Orange County, CA. 6-4-11. © Joan Avise |
%20Limestone%20Canyon%20Wilderness%20Park%206-4-11%20098.jpg) 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. |
%20Fullerton%20Arboretum.%205-02-09%20219.jpg)