Calflora, a 501c3 non-profit
Distribution by County   4550    
Lactuca serriola  L.
Prickly lettuce,   Prickly wild lettuce
Lactuca serriola is an annual herb that is not native to California.
Record Count by County

Alameda: 55 Lake: 12 Plumas: 37 Siskiyou: 42
Alpine: 9 Lassen: 214 Riverside: 184 Solano: 159
Amador: 9 Los Angeles: 391 Sacramento: 220 Sonoma: 67
Butte: 102 Madera: 47 San Benito: 208 Stanislaus: 29
Calaveras: 15 Marin: 51 San Bernardino: 135 Sutter: 16
Colusa: 17 Mariposa: 472 San Diego: 401 Tehama: 62
Contra Costa: 60 Mendocino: 13 San Francisco: 27 Trinity: 13
El Dorado: 75 Merced: 143 San Joaquin: 17 Tulare: 109
Fresno: 180 Modoc: 91 San Luis Obispo: 161 Tuolumne: 119
Glenn: 9 Mono: 20 San Mateo: 73 Ventura: 210
Humboldt: 13 Monterey: 62 Santa Barbara: 84 Yolo: 50
Imperial: 3 Napa: 30 Santa Clara: 104 Yuba: 19
Inyo: 22 Nevada: 39 Santa Cruz: 32
Kern: 267 Orange: 128 Shasta: 46
Kings: 12 Placer: 33 Sierra: 17

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).