College of Food, Agricultural and Natural Resource Sciences

Strand Memorial Herbarium

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Family: Asteraceae   Aster Family

Genus: Conyza   Horseweed
Genus of about 50 annual and perennial species native to tropical and warm temperate regions throughout the world, and also in cool temperate regions in North America and eastern Asia. Closely related to Erigeron.

Scientific Name: Conyza canadensis (L.) Cronq.
Common Name(s): Canadian Horseweed, Fleabane, Hogweed, Marestail, Horseweed Fleabane, Canada Horseweed
Growth Type: annual
Species Description:

Click on the thumbnails to view large image.

plant imageCaption: plant image

ID: Hrb-ERICA-001
Source: 35mm slide (photo)
Credit:
Keyword(s): vegetative
plant imageCaption: plant image

ID: Hrb-ERICA-002
Source: 35mm slide (photo)
Credit:
Keyword(s): leaf, vegetative
plant imageCaption: plant image

ID: Hrb-ERICA-003
Source: 35mm slide (photo)
Credit:
Keyword(s): flowering, inflorescense, vegetative
plant imageCaption: plant image

ID: Hrb-ERICA-004
Source: 35mm slide (photo)
Credit:
Keyword(s): inflorescense, mature
plant imageCaption: plant image

ID: Hrb-ERICA-005
Source: 35mm slide (photo)
Credit:
Keyword(s): seedling