Rough Cocklebur Xanthium strumarium LinnaeusNon-native  -  Invasive    Synonyms: Xanthium americanum, Xanthium canadense, Xanthium chinense, Xanthium cylindraceum, Xanthium echinatum, Xanthium echinellum, Xanthium pensylvanicum, Xanthium speciosum, Xanthium strumarium var. canadense, Xanthium strumarium var. glabratum.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Asterales   >   Family Asteraceae   >   Genus Xanthium   

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Rough Cocklebur in Dorchester Co., Maryland (9/18/2016). Photo by Wayne Longbottom. (MBP list)

Rough Cocklebur in Talbot Co., Maryland (9/21/2017). Photo by Wayne Longbottom. (MBP list)

Rough Cocklebur (winter aspect) in Anne Arundel Co., Maryland (1/1/2017). Photo by Bill Hubick. (MBP list)

Rough Cocklebur stem (winter) in Anne Arundel Co., Maryland (2/8/2017). Photo by Bill Hubick. (MBP list)

Rough Cocklebur in Garrett Co., Maryland (12/28/2020). (c) Bill Blauvelt, some rights reserved (CC BY-NC). Photo by Bill Blauvelt via iNaturalist. (MBP list)

Rough Cocklebur in Caroline Co., Maryland (10/16/2020). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Rough Cocklebur (winter aspect) in Anne Arundel Co., Maryland (12/30/2017). Photo by Bill Hubick. (MBP list)

Rough Cocklebur in Anne Arundel Co., Maryland (9/13/2017). Photo by Tyler Bell. (MBP list)

Rough Cocklebur in Montgomery Co., Maryland (10/4/2020). (c) josephmcourtney, some rights reserved (CC BY-NC). Photo by josephmcourtney via iNaturalist. (MBP list)

Rough Cocklebur in Baltimore Co., Maryland (10/11/2020). (c) Peter M Martin, some rights reserved (CC BY-NC). Photo by Peter M Martin via iNaturalist. (MBP list)

Rough Cocklebur in Caroline Co., Maryland (10/25/2019). (c) bababebo, some rights reserved (CC BY-NC). Photo by bababebo via iNaturalist. (MBP list)

Rough Cocklebur in Baltimore Co., Maryland (10/19/2020). (c) Dwight Johnson, all rights reserved. Photo by Dwight Johnson. (MBP list)

Rough Cocklebur in Anne Arundel Co., Maryland (1/7/2018). Photo by Bill Hubick. (MBP list)


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MBP marks as "Invasive" any taxon listed in the Maryland Invasive Species Council (MISC) list of Invasive Species of Concern in Maryland. You can read their criteria and review the lists here: https://mdinvasives.org/species-of-concern/.