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Distribution by County   4441    
Juncus bufonius  L.
Common toad rush,   Toad rush
Juncus bufonius is an annual grasslike herb that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Alameda: 54 Kings: 1 Placer: 35 Sierra: 14
Alpine: 5 Lake: 22 Plumas: 56 Siskiyou: 19
Amador: 13 Lassen: 50 Riverside: 213 Solano: 46
Butte: 256 Los Angeles: 171 Sacramento: 345 Sonoma: 117
Calaveras: 25 Madera: 27 San Benito: 31 Stanislaus: 4
Colusa: 25 Marin: 233 San Bernardino: 188 Sutter: 16
Contra Costa: 48 Mariposa: 30 San Diego: 383 Tehama: 115
Del Norte: 7 Mendocino: 74 San Francisco: 47 Trinity: 14
El Dorado: 37 Merced: 72 San Joaquin: 7 Tulare: 51
Fresno: 73 Modoc: 37 San Luis Obispo: 150 Tuolumne: 44
Glenn: 15 Mono: 24 San Mateo: 146 Ventura: 87
Humboldt: 40 Monterey: 138 Santa Barbara: 216 Yolo: 31
Imperial: 1 Napa: 39 Santa Clara: 50 Yuba: 25
Inyo: 11 Nevada: 50 Santa Cruz: 58
Kern: 64 Orange: 59 Shasta: 57

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. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/15/2025).