Robert W. Freckmann Herbarium


  Cirsium muticum Michx. image
Photographer: Emmet J. Judziewicz           

Emmet J. Judziewicz

Emmet J. Judziewicz

Merel R. Black

Merel R. Black

Merel R. Black

Christopher Noll

Christopher Noll

Christopher Noll

Scott A. Milburn
Family Asteraceae
Cirsium muticum Michx.
swamp thistle
Cirsium: derived from the Greek kirsion, "a kind of thistle;" also cirsos meaning "a swollen vein" for which thistle was once a remedy
muticum: blunt, without a point
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, biennial, 2'-7' tall, coarse forb with many branches; stems smooth and not winged; several stout roots
Flower: head 1 1/2" wide with purple to pink disk flowers, bract (phyllaries) tips white-wooly but not spiny; inflorescence a cluster with many heads; blooms July-Oct.
Fruit:dry seed on fluffy, feathery-divided pappus
Leaf:deeply pinnately-divided with lance-like to oblong segments, softly spiny
Habitat: wet; woods, meadows, streambanks, swamps
(Glossary)

More Information Natural Communities Herbarium Specimens
All Cirsium list Google- Images or Text

Flora of North America (off site)
Synonyms 
Carduus muticus (Michx.) Pers.
Cirsium bigelovii DC.
Cirsium muticum Michx. f. lactiflorum Fernald
Cirsium muticum Michx. var. monticola Fernald
Cirsium muticum Michx. var. subpinnatifidum (Britton) Fernald

         
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