Définitions
1.NounAny 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).
2.Nounmostly 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)
3.Nounin tribe Astereae
Conyza spp. (butterweeds or horseweed)
Erigeron spp., especially Erigeron acre (blue fleabane)
4.NounConyza spp. (butterweeds or horseweed)
5.NounErigeron spp., especially Erigeron acre (blue fleabane)
6.Nounin tribe Inuleae
Inula spp. (yellowheads)
Pluchea spp. (camphorweeds)
Pulicaria spp. (false fleabane), especially common fleabane (Pulicaria dysenterica subsp. dysenterica, formerly Inula dysenterica)
7.NounInula spp. (yellowheads)
8.NounPluchea spp. (camphorweeds)
9.NounPulicaria spp. (false fleabane), especially common fleabane (Pulicaria dysenterica subsp. dysenterica, formerly Inula dysenterica)
10.NounAlso, in subfamily Cichorioideae, Vernonia spp. (ironweeds).