Vascular Plants of the Gila Wilderness

Presented in Association with the
Western New Mexico University Department of Natural Sciences

Conyza canadensis (Linnaeus) Cronquist
(Horseweed)


Family: Asteraceae

Status: Exotic

Synonyms:
By var., see Allred

Conyza canadensis is a very common erect roadside annual. The small white discoid flowers are terminal and axillary. Panicles of flowers may take up the upper third of the plant. The leaves are mostly entire.
Please click on an image for a larger file.



Conyza canadensis, photo Russ Kleinman, Pinos Altos Range, Pinos Altos, July 23, 2007



Conyza canadensis, receptacle & achenes, photo Russ Kleinman, Pinos Altos Range, Pinos Altos, Oct. 12, 2007


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