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Distribution by County   4444    
Juncus bufonius  L.  var. occidentalis  F. J. Herm.
Round fruited toad rush,   Western toad rush
Juncus bufonius var. occidentalis is a perennial grasslike herb that is native to California, and also found elsewhere in North America and beyond.
Record Count by County

Alameda: 1 Lake: 2 Placer: 5 Sierra: 5
Alpine: 3 Lassen: 19 Plumas: 16 Siskiyou: 2
Amador: 1 Los Angeles: 19 Riverside: 30 Solano: 4
Butte: 15 Madera: 1 Sacramento: 5 Sonoma: 1
Colusa: 4 Marin: 34 San Benito: 4 Tehama: 4
Contra Costa: 1 Mariposa: 5 San Bernardino: 27 Trinity: 2
Del Norte: 1 Mendocino: 4 San Diego: 34 Tulare: 10
El Dorado: 2 Merced: 5 San Luis Obispo: 16 Tuolumne: 5
Fresno: 6 Modoc: 11 San Mateo: 33 Ventura: 14
Glenn: 1 Mono: 14 Santa Barbara: 5 Yuba: 3
Humboldt: 2 Monterey: 7 Santa Clara: 3
Inyo: 1 Nevada: 12 Santa Cruz: 2
Kern: 9 Orange: 3 Shasta: 9

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]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 01/19/2026).