Calflora, a 501c3 non-profit
Distribution by County   1874    
Ceratophyllum demersum  L.
Coon's tail,   Hornwort
Ceratophyllum demersum is a perennial herb that is native to California.
Record Count by County

Alameda: 4 Lassen: 5 Plumas: 9 Shasta: 2
Butte: 18 Los Angeles: 12 Riverside: 9 Siskiyou: 1
Calaveras: 1 Madera: 2 Sacramento: 8 Solano: 2
Colusa: 2 Marin: 6 San Bernardino: 42 Sonoma: 12
Contra Costa: 4 Mendocino: 5 San Diego: 17 Stanislaus: 1
El Dorado: 41 Merced: 7 San Francisco: 7 Tehama: 1
Glenn: 1 Mono: 2 San Joaquin: 7 Tulare: 1
Humboldt: 2 Monterey: 12 San Luis Obispo: 15 Tuolumne: 1
Imperial: 5 Napa: 6 San Mateo: 12 Ventura: 3
Inyo: 2 Nevada: 4 Santa Barbara: 6
Kern: 7 Orange: 10 Santa Clara: 13
Lake: 10 Placer: 2 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: 12/03/2024).