Calflora
Taxon  Report   2955    
Emex spinosa  (L.) Campd.
Devil's thorn,  Spiny threecornerjack
Emex spinosa, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild. Cal-IPC rating: Moderate

Emex spinosa is classified by the U.S. Federal Government as a NOXIOUS WEED. [USDA 2000]
Observation Hotline
(observation details)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Family: POLYGONACEAE  
Genus: Emex
Habitat: disturbed

Communities: weed, characteristic of disturbed places

Name Status:
Accepted by ICPN + PLANTS

Alternate Names:
PLANTS: Rumex spinosus
More information about  Emex spinosa

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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Sep 21, 2019).