Erigeron canadensis (synonym Conyza canadensis) is an annual plant native throughout most of North America and Central America. It is also widely naturalized in Eurasia and Australia. The Zuni people insert the crushed flowers of E. canadensis var. canadensis into the nostrils to cause sneezing, relieving rhinitis. Other Native Americans used a preparation of the plant's leaves to treat sore throat and dysentery.

Scientific classitication

Family: Asteraceae

Genus: Erigeron

Common Name

Erigeron canadensis, Xiao Peng Cao


Laforest, M., Martin, S. L., Bisaillon, K., Soufiane, B., Meloche, S., & Page, E. (2020). A chromosome-scale draft sequence of the Canada fleabane genome. Pest management science, 76(6), 2158–2169.