 His infrageneric classification was supported by a study of chromosome number in "Verticordia" and of barriers to hybridisation.In 2010, George described a new species, "V. setacea" and new subspecies of "V. mitchelliana.At present, the subgenera are "Chrysoma" with seven sections and twenty-one species, subgenus "Verticordia" with eleven sections and thirty-six species, and subgenus "Eperephes" with six sections and forty-four species.