Calflora: Xanthium strumarium

Xanthium strumarium L.

cocklebur, rough cockleburr

Xanthium strumarium, a dicot, is an annual herb that is native to California and is also found elsewhere in North America and beyond.

Communities:	weed, species characteristic of disturbed places, wetland-riparian
Habitat:	disturbed [Walker]
Wetlands:	Equally likely to occur in wetlands or non wetlands [U.S. Fish & Wildlife Service.]
Elevation:	between 0 and 1640 feet
Family:	ASTERACEAE
Related:	See a list of other species in the genus Xanthium found in California.

Accepted by TJM2 + PLANTS + JM93

Other Names:

ICPN:

Xanthium calvum

Bloom Period

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Observation Hotline
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Distribution by County:

See a detailed Distribution Grid of this plant in California.

A shaded county indicates that there are ocurrence records of this plant within the county.

Hover the mouse over the map to see county names. Click to view records from that county.

	There are specimen records from this county in an herbarium.
	There are documented records, vouchered or confirmed by an expert.
	There are reported records.
	There are reported records available indirectly (eg. in botanical literature).

Records by County, with approximate record counts in the form: TOTAL / CCH. Click county name to view records.

CCH: records provided by the participants of the Consortium of California Herbaria.

Information about Xanthium strumarium from other sources:

Photos on Picasa / Flickr / Google Images
website references on Google
USDA PLANTS Profile (XAST)
Nursery availability and horticultural info (what grows with this plant?) on CNPLX
UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)
2012 Jepson Manual Treament from the Jepson Herbarium,
University of California, Berkeley
Original Publication citation. on the International Plants Names Index
Search efloras.org (Flora of North America)
Search the Lady Bird Johnson Wildflower Center Native Plant Database