Calflora, a 501c3 non-profit
Distribution by County   4511    
Kallstroemia grandiflora  Torr. ex A. Gray
Arizona caltrop,   Arizona poppy
Kallstroemia grandiflora is an annual herb that is not native to California.
Record Count by County

Riverside: 2 San Bernardino: 5

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]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 06/03/2023).