Calflora
Taxon  Report   10384    
Sonchus asper  (L.) Hill
Spiny sowthistle
Sonchus asper, a dicot, is an annual herb that is not native to California; it has been naturalized in the wild.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
(1911 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Family: ASTERACEAE  
Genus: Sonchus
Subspecies and Varieties:

Wetlands:
Arid West: Equally likely to occur in wetlands and non wetlands
Mountains, Valleys and Coast: Occurs usually in non wetlands, occasionally in wetlands

Habitat: disturbed

Communities: weed, characteristic of disturbed places, wetland-riparian

Name Status:
Accepted by ICPN + PLANTS

Alternate Names:
PLANTS: Sonchus asper ssp. glaucescens
PLANTS: Sonchus nymanii
More information about  Sonchus asper
UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

Search efloras.org (Flora of North America)

Photos on PlantID.net   /   Google Images

Consortium of California Herbaria 2


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]. 2020. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Oct 21, 2020).