Calflora, a 501c3 non-profit
Distribution by County   6817    
Potamogeton nodosus  Poir.
Long leaved pondweed,   Longleaf pondweed,   Pondweed
Potamogeton nodosus is a perennial herb (aquatic) that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Alameda: 7 Los Angeles: 5 Riverside: 2 Shasta: 4
Butte: 10 Marin: 13 Sacramento: 2 Sierra: 5
Calaveras: 1 Mendocino: 9 San Benito: 2 Solano: 2
Colusa: 3 Merced: 5 San Bernardino: 32 Sonoma: 18
El Dorado: 2 Modoc: 4 San Diego: 27 Stanislaus: 2
Fresno: 9 Mono: 10 San Francisco: 1 Tehama: 4
Humboldt: 3 Monterey: 11 San Joaquin: 1 Trinity: 1
Inyo: 4 Napa: 2 San Luis Obispo: 21 Tulare: 3
Kern: 3 Nevada: 3 San Mateo: 10 Tuolumne: 1
Lake: 13 Orange: 3 Santa Clara: 3 Ventura: 4
Lassen: 2 Plumas: 9 Santa Cruz: 3

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: 11/21/2024).