Aster trinervius f. albidus (Kitam.) Kitam. accepted as Aster ovatus (Franch. & Sav.) Mot.Ito & Soejima (original description)
Aster trinervius f. albo-variegatus Kitam. accepted as Aster ovatus (Franch. & Sav.) Mot.Ito & Soejima (original description)
Aster trinervius f. purpurascens (Honda) Kitam. accepted as Aster ageratoides Turcz. (original description)
Aster trinervius subsp. amplexifolius (Sieb. & Zucc.) Kitam. accepted as Aster semiamplexicaulis (Makino) Makino ex Koidz. (original description)
Aster trinervius subsp. leiophyllus (Franch. & Sav.) Kitam. accepted as Aster ageratoides Turcz. (original description)
Aster trinervius subsp. ovatus (Franch. & Sav.) Kitam. accepted as Aster ovatus (Franch. & Sav.) Mot.Ito & Soejima (original description)
Aster trinervius var. harai (Makino) Makino ex Kitam. accepted as Aster ageratoides Turcz. (original description)
Aster trinervius var. littoricola (Kitam.) Kitam. accepted as Aster ovatus (Franch. & Sav.) Mot.Ito & Soejima (original description)
Aster trinervius var. megarocephalus (Kitam.) Kitam. accepted as Aster ageratoides Turcz. (original description)
Aster trinervius var. ovalifolius (Kitam.) Kitam. accepted as Aster ageratoides var. ovalifolius Kitam. (original description)
Aster trinervius var. sawadanus (Kitam.) Kitam. accepted as Aster ageratoides var. sawadanus Kitam. (original description)
Aster trinervius var. stenophyllus Kitam. accepted as Aster ageratoides Turcz. (original description)
Aster trinervius var. tenuifolius (Kitam.) Kitam. accepted as Aster ageratoides var. tenuifolius Kitam. (original description)