Calflora, a 501c3 non-profit
Distribution by County   8783    
Cirsium praeteriens  J. F. Macbr.
Palo alto thistle
Cirsium praeteriens is a perennial herb that is native to California.
California Rare Plant Rank: 1A (presumed extinct).   CNDDB
Record Count by County

San Mateo: 1

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 12/01/2022).