Robert W. Freckmann Herbarium


  Conyza canadensis (L.) Cronquist var. canadensis image
Photographer: Emmet J. Judziewicz           

Botanical Illustration

Botanical Illustration

Botanical Illustration

Emmet J. Judziewicz

Merel R. Black

Merel R. Black

Merel R. Black

Christopher Noll

Christopher Noll

Robert Bierman

Robert W. Freckmann

Steve C. Garske

Steve C. Garske
Family Asteraceae
Conyza canadensis (L.) Cronquist var. canadensis
Canadian horseweed, fleabane, hogweed
Conyza: derived from the Greek word for flea konops, and used by Pliny as a name for some kind of a fleabane
canadensis: of or referring to Canada
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, annual, 3"-60" tall forb, mostly unbranched to the inflorescence; stems often slightly hairy
Flower: head 3/16" wide with 25-40 white to pinkish disk flowers; inflorescence of many small heads in a long, large open cluster; blooms July-Oct.
Fruit:dry seed on fluffy pappus
Leaf:many alternate, slightly hairy, linear leaves, the lower leaves usually toothed, getting progressively smaller toward the top
Habitat: disturbed sites
(Glossary)

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

Flora of North America (off site)
Synonyms 
Erigeron canadensis L.
Erigeron canadensis L. f. coloratus Fassett
Leptilon canadense (L.) Britton

         
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