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Xanthium strumarium var. canadense
Xanthium strumarium L. var. canadense (Mill.) Torr. & A. Gray
Canada Cocklebur
Asteraceae (Aster Family)
Synonym(s): Xanthium acerosum, Xanthium californicum, Xanthium californicum var. rotundifolium, Xanthium campestre, Xanthium canadense, Xanthium cavanillesii, Xanthium cenchroides, Xanthium commune, Xanthium echinatum, Xanthium glanduliferum, Xanthium italicum, Xanthium macounii, Xanthium oligacanthum, Xanthium oviforme, Xanthium pensylvanicum, Xanthium saccharatum, Xanthium speciosum, Xanthium strumarium ssp. italicum, Xanthium strumarium var. oviforme, Xanthium strumarium var. pensylvanicum, Xanthium varians
USDA Symbol: XASTC
USDA Native Status: L48 (N), HI (I), CAN (N)
A cocklebur was the inspiration for a Swiss engineer, George deMastral, in 1948, for the invention of Velcro. He examined the burs that stuck to his socks and discovered that they consisted of hundreds of tiny hooks, which attached themselves to anything loopy.
From the Image Gallery
Plant Characteristics
Duration: AnnualHabit: Herb
Size Notes: Up to about 6 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom Information
Bloom Color: YellowBloom Time: Jul , Aug , Sep , Oct
Distribution
USA: AL , AR , AZ , CA , CO , CT , DC , DE , FL , GA , HI , IA , ID , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , MT , NC , ND , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SC , SD , TN , TX , UT , VA , VT , WA , WI , WV , WYCanada: NB , NS , PE
Benefit
Use Wildlife: Cocklebur seeds are the most frequently recorded food of the extinct Carolina Parakeet, the only parrot native to eastern North America, extinct in the early 20th century.Attracts: Birds
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Lady Bird Johnson Wildflower Center - Austin, TX
Wildflower Center Seed Bank
LBJWC-633 Collected 2007-12-09 in Blanco County by Lady Bird Johnson Wildflower CenterBibliography
Bibref 1236 - The Carolina Parakeet: Glimpses of a Vanished Bird (2004) Snyder, Noel F. R.Search More Titles in Bibliography
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Additional resources
USDA: Find Xanthium strumarium var. canadense in USDA PlantsFNA: Find Xanthium strumarium var. canadense in the Flora of North America (if available)
Google: Search Google for Xanthium strumarium var. canadense
Metadata
Record Modified: 2023-01-30Research By: TWC Staff