Taxon  Report   10161 
Onopordum acanthium  L.
Scotch cottonthistle
Onopordum acanthium
© 2007 Louis-M. Landry
Click on a photo to see it bigger.
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. Cal-IPC rating: high

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
Genus: Onopordum
Subspecies and Varieties:
Distribution by County 

Add an Observation of  Onopordum acanthium

Name Status:
Accepted by TJM2 + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Onopordum acanthium ssp. acanthium
More information about  Onopordum acanthium
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria


Search (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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Jan 16, 2018).

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