Cirsium muticum

Cirsium muticum
Conservation status
Secure  (NatureServe)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Cirsium
Species:	C. muticum
Binomial name
Cirsium muticum Michx.
Synonyms[2]
Synonymy Carduus glutinosus Beck Carduus muticus (Michx.) Pers. Cirsium bigelovii DC. Cirsium bigelowii DC. Cnicus glaber Nutt. Cnicus glutinosus Bigelow Cnicus muticus Elliott Cnicus muticus (Michx.) Pursh

Cirsium muticum, also known as swamp thistle, marsh thistle, dunce-nettle, or horsetops, is a North American species of plants in the family Asteraceae, native to central and eastern Canada and the central and eastern United States.