Aster trinervius subsp. angustifolius (Kitam.) Kitam. accepted as Aster ovatus (Franch. & Sav.) Mot.Ito & Soejima (original description)
Aster trinervius subsp. microcephalus Kitam. accepted as Aster ovatus var. microcephalus (Miq.) Mot.Ito & Soejima (original description)
Aster trinervius subsp. ripensis (Makino) Kitam. accepted as Aster ovatus var. ripensis (Makino) Mot.Ito & Soejima (original description)
Aster trinervius subsp. sugimotoi (Kitam.) Kitam. accepted as Aster sugimotoi Kitam. (original description)
Aster trinervius subsp. yakusimensis (Kitam.) Kitam. accepted as Aster yakushimensis (Kitam.) Soejima & Yahara (original description)
Aster trinervius subsp. yakusimensis var. vernalis (Honda) Kitam. accepted as Aster ovatus (Franch. & Sav.) Mot.Ito & Soejima (original description)
Aster trinervius subsp. yakusimensis var. yezoensis Kitam. accepted as Aster ovatus var. yezoensis (Kitam. & Hara) Mot.Ito & Soejima (original description)
Aster trinervius subsp. yoshinaganus (Kitam.) Kitam. accepted as Aster yoshinaganus (Kitam.) Mot.Ito & Soejima (original description)