Taxon  Report   5917    
Onopordum illyricum  L.
Illyrian cottonthistle,  Illyrian thistle
Onopordum illyricum
© 2005 Luigi Rignanese
Photos from
CalPhotos / Calflora
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
Name Status:
Accepted by JEF + PLANTS

More information about  Onopordum illyricum
Photos on Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


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: Nov 14, 2018).

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