Taxon  Report   1504 
Carduus pycnocephalus  L.
Italian thistle
Carduus pycnocephalus , a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

The California Invasive Plant Council classifies its potential impact on native ecosystems as moderate (plant profile / CalWeedMapper ).

 

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 Distribution by County 

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one or more occurrences within a 7.5-minute quadrangle

 Plant Characteristics
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Bloom Period
Carduus pycnocephalus
© 2004 Carol W. Witham
Carduus pycnocephalus
© 2001 CDFA
Carduus pycnocephalus
© 2004 Carol W. Witham
Communities: weed, characteristic of disturbed places
Habitat: disturbed [Walker]
Family: ASTERACEAE  
Genus: Carduus
Subspecies and Varieties:
Carduus pycnocephalus ssp. pycnocephalus
Add an Observation of  Carduus pycnocephalus
Name Status:
Accepted by TJM2 + PLANTS + JM93
 
 Information about  Carduus pycnocephalus  from other sources:
USDA PLANTS Profile (CAPY2)

Photos on CalPhotos / Flickr / Google Images

website references on Google

Jepson eFlora (TJM2)

Records from the Consortium of California Herbaria

Original Publication citation. on the International Plants Names Index

Search efloras.org (Flora of North America)

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]. 2014. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Oct 31, 2014).

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

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