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Image of Arizona thistle
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Arizona Thistle

Cirsium arizonicum (A. Gray) Petr.

2007 Steven Thorsted   cc-by-nc

Cirsium arizonicum (Arizona Thistle) is a species of biennial herb in the family Asteraceae. They are native to The Contiguous United States. They have achenes. Flowers are visited by Atrytonopsis and Python Skipper.

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  • URI: http://purl.obolibrary.org/obo/PO_0030107
  • Definition: a fruit which develops from a carpel or gyneocium and at maturity comprises a dry exocarp, a dry mesocarp, and a dry endocarp that are connected to a seed coat by a funicle
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EOL has data for 10 attributes, including:

Known occurrences, collected specimens and observations of Arizona thistle. View this species on GBIF