Calflora, a 501c3 non-profit
Distribution by County   266    
Alternanthera philoxeroides  (Mart.) Griseb.
Alligator weed,   Alligatorweed
Alternanthera philoxeroides is a perennial herb that is not native to California.
Cal-IPC rating: high
Record Count by County

Butte: 71 Orange: 1 San Diego: 5 Sutter: 2
Contra Costa: 31 Riverside: 9 San Joaquin: 17 Tulare: 106
Kings: 36 Sacramento: 51 Santa Barbara: 1 Yolo: 4
Los Angeles: 39 San Bernardino: 1 Solano: 34

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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/23/2024).