Calflora, a 501c3 non-profit
Distribution by County   4104    
Herniaria hirsuta  L.  ssp. cinerea  (DC.) Cout.

(not an active name)
Grey herniaria, Hairy rupturewort
Herniaria hirsuta ssp. cinerea is an annual herb that is not native to California.
Record Count by County

Alameda: 17 Madera: 5 San Bernardino: 13 Stanislaus: 12
Butte: 1 Mariposa: 4 San Diego: 30 Tehama: 2
Calaveras: 1 Merced: 5 San Joaquin: 8 Tulare: 4
Colusa: 1 Monterey: 13 San Luis Obispo: 73 Tuolumne: 3
Contra Costa: 2 Napa: 2 Santa Barbara: 15 Ventura: 18
Fresno: 13 Orange: 2 Santa Clara: 3 Yolo: 1
Kern: 19 Placer: 1 Santa Cruz: 2
Kings: 1 Riverside: 13 Shasta: 1
Los Angeles: 42 San Benito: 50 Siskiyou: 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]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/15/2026).