Coreopsis georgina Cass. accepted as Dahlia pinnata Cav. (original description)
Gaillardia rustica Cass. accepted as Gaillardia aristata Pursh (original description)
Galatea albiflora Cass. accepted as Galatella sedifolia (L.) Greuter (original description)
Galatea canescens Cass. (original description)
Galatea intermedia Cass. accepted as Galatella sedifolia (L.) Greuter (original description)
Galatea pauciflora Cass. (original description)
Galatea punctata Cass. (original description)
Galatea rigida Cass. accepted as Galatella sedifolia subsp. rigida (DC.) Greuter (original description)
Gelasia villosa (Scop.) Cass. accepted as Scorzonera villosa Scop. (original description)
Gerbera burmanni Cass. accepted as Gerbera crocea (L.) Kuntze (original description)
Gerbera coronopifolia (L.) Cass. accepted as Gerbera linnaei Cass. (original description)
Gerbera lagascae Cass. accepted as Gerbera linnaei Cass. (original description)
Gerbera linnaei Cass. (original description)
Gerbera piloselloides (L.) Cass. (original description)