Calflora, a 501c3 non-profit
Distribution by County   4101    
Heracleum lanatum  Michx.

(not an active name)
Cow parsnip
Heracleum lanatum is a perennial herb that is native to California, and also found elsewhere in North America and beyond.
also called Heracleum maximum
Record Count by County

Alameda: 67 Inyo: 6 Napa: 12 Santa Cruz: 34
Alpine: 23 Lake: 2 Nevada: 39 Shasta: 12
Amador: 4 Lassen: 7 Placer: 59 Sierra: 21
Butte: 13 Los Angeles: 1 Plumas: 42 Siskiyou: 39
Calaveras: 2 Madera: 10 Riverside: 1 Solano: 1
Colusa: 3 Marin: 328 Sacramento: 1 Sonoma: 123
Contra Costa: 53 Mariposa: 29 San Bernardino: 35 Tehama: 8
Del Norte: 11 Mendocino: 71 San Francisco: 36 Trinity: 17
El Dorado: 37 Modoc: 16 San Luis Obispo: 3 Tulare: 41
Fresno: 30 Mono: 20 San Mateo: 285 Tuolumne: 12
Humboldt: 90 Monterey: 26 Santa Clara: 26

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: 05/03/2024).