(n) especially pretty plant having a delicate fringe of threadlike rays around flower heads having very slender white or pink rays; United States and Canada, Syn.Erigeron philadelphicus
(n) well-branched plant with hairy leaves and stems each with a solitary flower head with narrow white or pink or lavender rays; western North America, Syn.Erigeron divergens
(n) common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron, Syn.Conyza canadensis, Erigeron canadensis, fleabane, Canadian fleabane
n. (Bot.) One of various plants, supposed to have efficacy in driving away fleas. They belong, for the most part, to the genera Conyza, Erigeron, and Pulicaria. [ 1913 Webster ]
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