Calflora, a 501c3 non-profit
Distribution by County   9500    
Matricaria occidentalis  Greene
Valley mayweed
Matricaria occidentalis is an annual herb that is native to California, and also found elsewhere in North America and beyond.
also called Chamomilla occidentalis
Record Count by County

Alameda: 2 Lake: 1 Plumas: 1 Santa Barbara: 1
Butte: 8 Lassen: 6 Riverside: 47 Sierra: 2
Contra Costa: 1 Los Angeles: 5 Sacramento: 1 Solano: 3
Fresno: 11 Madera: 6 San Benito: 2 Sonoma: 1
Glenn: 1 Marin: 1 San Bernardino: 6 Sutter: 2
Humboldt: 1 Mariposa: 1 San Diego: 7 Ventura: 1
Kern: 18 Merced: 9 San Francisco: 2 Yolo: 4
Kings: 4 Orange: 4 San Luis Obispo: 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: 12/03/2024).