Calflora
Taxon  Report   10384 
Sonchus asper  (L.) Hill
Spiny sowthistle
Sonchus asper
© 2004 Robert E. Preston, Ph.D.
Click on a photo to see it bigger.
CalPhotos
Sonchus asper
© 2005 Steve Matson
Sonchus asper
© 2009 Zoya Akulova
Sonchus asper, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations



Bloom Period
Sonchus asper
© 2006 Louis-M. Landry
Family: ASTERACEAE  
Genus: Sonchus
Subspecies and Varieties:
Communities:
weed, characteristic of disturbed places, wetland-riparian
Habitat: disturbed
Wetlands: Arid West: Equally likely to occur in wetlands and non wetlands
Mountains, Valleys and Coast: Occurs usually in non wetlands, occasionally in wetlands
Name Status:
Accepted by TJM2 + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Sonchus asper ssp. asper
PLANTS: Sonchus asper ssp. glaucescens
PLANTS: Sonchus nymanii
More information about  Sonchus asper
Photos on CalPhotos / Google Images
Photos and ID tips from PlantID.net

UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

Jepson eFlora

Records from the Consortium of California Herbaria

USDA PLANTS Profile (SOAS)

Search efloras.org (Flora of North America)

website references from Google


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]. 2017. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Nov 18, 2017).

The information on this page comes from diverse sources. None of the links are sponsored.