Calflora, a 501c3 non-profit
Distribution by County   7474    
Senecio aronicoides  DC.
California butterweed,   California groundsel,   California rayless butterweed,   Rayless ragwort
Senecio aronicoides is a perennial herb that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 26 Lassen: 27 Plumas: 43 Solano: 1
Alpine: 1 Madera: 13 San Benito: 9 Sonoma: 27
Butte: 32 Marin: 72 San Francisco: 9 Sutter: 1
Calaveras: 2 Mariposa: 50 San Luis Obispo: 3 Tehama: 26
Colusa: 3 Mendocino: 16 San Mateo: 54 Trinity: 11
Contra Costa: 39 Modoc: 16 Santa Barbara: 1 Tulare: 8
El Dorado: 25 Mono: 4 Santa Clara: 22 Tuolumne: 21
Fresno: 25 Monterey: 14 Santa Cruz: 8 Yuba: 5
Glenn: 8 Napa: 24 Shasta: 45
Humboldt: 1 Nevada: 7 Sierra: 12
Lake: 16 Placer: 9 Siskiyou: 5

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).