noun Any of various species of flowering plants in certain genera in family Asteraceae, that typically repel insects: mostly in two tribes of subfamily Asteroideae in tribe Astereae Conyza spp. (butterweeds or horseweed) Erigeron spp., especially Erigeron acre (blue fleabane) in tribe Inuleae Inula spp. (yellowheads) Pluchea spp. (camphorweeds) Pulicaria spp. (false fleabane), especially common fleabane (Pulicaria dysenterica subsp. dysenterica, formerly Inula dysenterica) Also, in subfamily Cichorioideae, Vernonia spp. (ironweeds).
noun mostly in two tribes of subfamily Asteroideae in tribe Astereae Conyza spp. (butterweeds or horseweed) Erigeron spp., especially Erigeron acre (blue fleabane) in tribe Inuleae Inula spp. (yellowheads) Pluchea spp. (camphorweeds) Pulicaria spp. (false fleabane), especially common fleabane (Pulicaria dysenterica subsp. dysenterica, formerly Inula dysenterica)
noun in tribe Astereae Conyza spp. (butterweeds or horseweed) Erigeron spp., especially Erigeron acre (blue fleabane)
noun Conyza spp. (butterweeds or horseweed)
noun Erigeron spp., especially Erigeron acre (blue fleabane)
noun in tribe Inuleae Inula spp. (yellowheads) Pluchea spp. (camphorweeds) Pulicaria spp. (false fleabane), especially common fleabane (Pulicaria dysenterica subsp. dysenterica, formerly Inula dysenterica)