Taxon  Report   8367    
Xanthium strumarium  L.
Rough cockleburr
Xanthium strumarium
© 2008 John Dittes
Photos from
CalPhotos / Calflora
Xanthium strumarium
© 2018 Ron Vanderhoff
Xanthium strumarium
© 2008 Louis-M. Landry
Xanthium strumarium, a dicot, is an annual herb that is native to California, is also found elsewhere in North America and beyond.

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Xanthium strumarium
© 2017 B.J. Dion
Genus: Xanthium
Communities: weed, characteristic of disturbed places, wetland-riparian

Wetlands: Equally likely to occur in wetlands and non wetlands

Habitat: disturbed

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
ICPN: Xanthium calvum
ICPN: Xanthium strumarium var. canadense
ICPN: Xanthium strumarium var. glabratum
. . .
More information about  Xanthium strumarium
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on   /   Google Images
UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

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: Dec 13, 2018).

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