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