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Xanthium strumarium var. glabratum

Xanthium strumarium L. var. glabratum (DC.) Cronquist

Rough Cocklebur

Asteraceae (Aster Family)

Synonym(s): Xanthium americanum, Xanthium calvum, Xanthium chasei, Xanthium chinense, Xanthium curvescens, Xanthium cylindraceum, Xanthium echinellum, Xanthium globosum, Xanthium inflexum, Xanthium macrocarpum var. glabratum, Xanthium occidentale, Xanthium orientale, Xanthium strumarium var. wootonii, Xanthium strumarium var. wootonii, Xanthium wootonii


USDA Native Status: L48 (N), PR (N), VI (N), CAN (N)


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Plant Characteristics

Duration: Annual
Habit: 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: White , Green
Bloom Time: Jul , Aug , Sep , Oct


USA: AL , AR , CA , CT , DC , DE , FL , GA , IA , ID , IL , IN , KS , KY , LA , MA , MD , MI , MN , MO , MS , NC , NE , NJ , NM , NY , OH , OK , OR , PA , RI , SC , TN , TX , VA , VT , WA , WI , WV
Canada: BC , ON , QC , SK

Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Xanthium strumarium var. glabratum in USDA Plants
FNA: Find Xanthium strumarium var. glabratum in the Flora of North America (if available)
Google: Search Google for Xanthium strumarium var. glabratum


Record Modified: 2019-05-17
Research By: CBR

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