Taxon  Report   5917 
Onopordum illyricum  L.
Illyrian cottonthistle,  Illyrian thistle
Onopordum illyricum
© 2005 Luigi Rignanese
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Onopordum illyricum
© 2005 Luigi Rignanese
Onopordum illyricum
© 2001 CDFA
Onopordum illyricum, a dicot, is a biennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild. There is a high risk of this plant becoming invasive in California according to Cal-IPC.

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 illyricum
© 2005 Luigi Rignanese
Genus: Onopordum
Distribution by County 

Add an Observation of  Onopordum illyricum

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

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

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: Feb 23, 2018).

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