Calflora, a 501c3 non-profit
Distribution by County   11006    
Persicaria amphibia  (L.) Delarbre
Water smartweed
Persicaria amphibia is a perennial herb (aquatic) that is native to California, and also found elsewhere in North America.
Record Count by County

Alameda: 11 Madera: 1 Riverside: 4 Sierra: 6
Alpine: 3 Marin: 25 Sacramento: 35 Siskiyou: 5
Butte: 15 Mariposa: 2 San Benito: 1 Solano: 24
Colusa: 6 Mendocino: 15 San Bernardino: 68 Sonoma: 12
Contra Costa: 20 Merced: 8 San Diego: 59 Stanislaus: 3
El Dorado: 24 Modoc: 4 San Francisco: 14 Sutter: 6
Fresno: 4 Mono: 21 San Joaquin: 7 Tehama: 4
Glenn: 10 Monterey: 25 San Luis Obispo: 43 Tulare: 2
Inyo: 6 Napa: 3 San Mateo: 44 Tuolumne: 9
Kern: 3 Nevada: 9 Santa Barbara: 36 Ventura: 17
Lake: 21 Orange: 13 Santa Clara: 29 Yolo: 11
Lassen: 24 Placer: 6 Santa Cruz: 32
Los Angeles: 11 Plumas: 21 Shasta: 11

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: 12/04/2024).