Calflora, a 501c3 non-profit
Distribution by County   11059    
Rumex crassus  Rech. f.
Willow leaved dock
Rumex crassus is a perennial herb that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 1 Mendocino: 23 San Mateo: 56 Sonoma: 13
Contra Costa: 5 Monterey: 12 Santa Barbara: 18 Ventura: 5
Humboldt: 8 San Francisco: 18 Santa Cruz: 14
Marin: 23 San Luis Obispo: 17 Solano: 1

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).