fleabane

Noun

• common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron

• any of several North American plants of the genus Erigeron having daisylike flowers; formerly believed to repel fleas

• hairy perennial Eurasian herb with yellow daisylike flowers reputed to destroy or drive away fleas

Related words

• Synonyms: 
  horseweed , Canadian fleabane , Conyza canadensis , Erigeron canadensis , feabane mullet , Pulicaria dysenterica