Taxon  Report   1504 
Carduus pycnocephalus  L.
Italian thistle
Carduus pycnocephalus
© 2004 Carol W. Witham
CalPhotos: click on a
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Carduus pycnocephalus
© 2001 CDFA
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).

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
Carduus pycnocephalus
© 2004 Carol W. Witham
Family: ASTERACEAE  
Genus: Carduus
Subspecies and Varieties:
Communities:
weed, characteristic of disturbed places
Habitat: disturbed [Walker]
Distribution by County 

Add an Observation of  Carduus pycnocephalus

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

Photos and ID tips from PlantID.net

Jepson eFlora

Records from the Consortium of California Herbaria

USDA PLANTS Profile (CAPY2)

Original Publication citation (ITIS)

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: Feb 08, 2016).

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