Calflora, a 501c3 non-profit
Distribution by County   5739    
Myriophyllum verticillatum  L.
Verticillate milfoil,   Whorl leaf watermilfoil
Myriophyllum verticillatum is a perennial herb (aquatic) that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Contra Costa: 5 Lassen: 2 Plumas: 2
El Dorado: 2 Mono: 3 San Mateo: 2
Humboldt: 2 Placer: 1 Sonoma: 2

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]. 2025. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 02/02/2025).