In studies by Noyes 2000 and Nesom 2008, Conyza, as traditionally circumscribed, was found to be nested within Erigeron and to be para- and/or polyphyletic. There is no full alternate taxonomy provided. Noyes doesn't make taxonomic suggestions or provides a synonymy.
NZOR Concept Id
NZFLORA (2012-) New Zealand Plant Names - Name based concepts