Conyza spp. (butterweeds or horseweed)
Pulicaria spp. (false fleabane), especially common fleabane (Pulicaria dysenterica subsp. dysenterica, formerly Inula dysenterica)
Erigeron spp., especially Erigeron acre (blue fleabane)
Inula spp. (yellowheads)
Also, in subfamily Cichorioideae, Vernonia spp. (ironweeds).
mostly in two tribes of subfamily Asteroideae
Pluchea spp. (camphorweeds)
Any of various flowering plants of the genus Conyza.
A plant of the species Cichorium intybus