Taxon  Report   10161 
Onopordum acanthium  L.
Scotch cottonthistle
Onopordum acanthium
© 2007 Louis-M. Landry
CalPhotos: click on a
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Onopordum acanthium
© 2007 Louis-M. Landry
Onopordum acanthium
© 2013 Richard Spellenberg
Onopordum acanthium, a dicot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.
It is an invasive plant. The California Invasive Plant Council classifies its potential impact on native ecosystems as high (plant profile / CalWeedMapper).

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
Onopordum acanthium
© 2001 CDFA
Family: ASTERACEAE  
Genus: Onopordum
Subspecies and Varieties:
Distribution by County 

Add an Observation of  Onopordum acanthium

Name Status:
Accepted by TJM2 + PLANTS + JM93
 
More information about  Onopordum acanthium
Photos on CalPhotos / Google Images

Jepson eFlora

Records from the Consortium of California Herbaria

USDA PLANTS Profile (ONAC)

Search the International Plants Names Index

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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Apr 28, 2016).

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