| 27439 | Petasites laevigatus (Willd.) Rchb. | Petasites radiatus (J. F. Gmel.) J. Toman | 104493 | | | Petasites laevigatus (Willd.) Rchb. | Petasites radiatus (J. F. Gmel.) J. Toman |
| 104491 | Petasites japonicus (Siebold & Zucc.) Maxim. | | | a | | Petasites japonicus (Siebold & Zucc.) Maxim. | |
| 104492 | Petasites japonicus (Siebold & Zucc.) Maxim. subsp. giganteus (F. Schmidt ex Trautv.) Kitam. | | | a | i | Petasites japonicus (Siebold & Zucc.) Maxim. subsp. giganteus (F. Schmidt ex Trautv.) Kitam. | |
| 104493 | Petasites radiatus (J. F. Gmel.) J. Toman | | | a | | Petasites radiatus (J. F. Gmel.) J. Toman | |
| 105034 | Petasites japonicus (Siebold & Zucc.) Maxim. var. giganteus (F. Schmidt ex Trautv.) G. Nicholson | Petasites japonicus (Siebold & Zucc.) Maxim. subsp. giganteus (F. Schmidt ex Trautv.) Kitam. | 104492 | | i | Petasites japonicus (Siebold & Zucc.) Maxim. var.giganteus (F. Schmidt ex Trautv.) G. Nicholson | Petasites japonicus (Siebold & Zucc.) Maxim. subsp. giganteus (F. Schmidt ex Trautv.) Kitam. |
| 410196 | Petasites fragrans (Vill.) C. Presl | Petasites pyrenaicus (L.) G. López | 464706 | | | Petasites fragrans (Vill.) C. Presl | Petasites pyrenaicus (L.) G. López |
| 413414 | Petasites hybridus (L.) G. Gaertn. et al. | | | a | | Petasites hybridus (L.) G. Gaertn. et al. | |
| 429501 | Petasites frigidus (L.) Fr. | | | a | | Petasites frigidus (L.) Fr. | |
| 429503 | Petasites officinalis Moench | Petasites hybridus (L.) G. Gaertn. et al. | 413414 | | | Petasites officinalis Moench | Petasites hybridus (L.) G. Gaertn. et al. |
| 448228 | Petasites hyperboreus Rydb. | Petasites frigidus (L.) Fr. var. frigidus | 455502 | | | Petasites hyperboreus Rydb. | Petasites frigidus (L.) Fr. var.frigidus |
| 455501 | Petasites frigidus (L.) Fr. var. sagittatus (Banks ex Pursh) Chern. | | | a | i | Petasites frigidus (L.) Fr. var.sagittatus (Banks ex Pursh) Chern. | |
| 455502 | Petasites frigidus (L.) Fr. var. frigidus | | | a | i | Petasites frigidus (L.) Fr. var.frigidus | |
| 455504 | Petasites sagittatus (Banks ex Pursh) A. Gray | Petasites frigidus (L.) Fr. var. sagittatus (Banks ex Pursh) Chern. | 455501 | | | Petasites sagittatus (Banks ex Pursh) A. Gray | Petasites frigidus (L.) Fr. var.sagittatus (Banks ex Pursh) Chern. |
| 455505 | Petasites frigidus (L.) Fr. var. palmatus (Aiton) Cronquist | | | a | i | Petasites frigidus (L.) Fr. var.palmatus (Aiton) Cronquist | |
| 455506 | Petasites frigidus (L.) Fr. nothovar. vitifolius (Greene) Chern. | | | a | i | Petasites frigidus (L.) Fr. nothovar. vitifolius (Greene) Chern. | |
| 455507 | Petasites spp. | | | a | | Petasites spp. | |
| 455509 | Petasites vitifolius Greene | Petasites frigidus (L.) Fr. nothovar. vitifolius (Greene) Chern. | 455506 | | | Petasites vitifolius Greene | Petasites frigidus (L.) Fr. nothovar. vitifolius (Greene) Chern. |
| 464706 | Petasites pyrenaicus (L.) G. López | | | a | | Petasites pyrenaicus (L.) G. López | |
| 483485 | Petasites japonicus (Siebold & Zucc.) Maxim. subsp. japonicus | | | a | i | Petasites japonicus (Siebold & Zucc.) Maxim. subsp. japonicus | |
| 483486 | Petasites japonicus (Siebold & Zucc.) Maxim. var. japonicus | Petasites japonicus (Siebold & Zucc.) Maxim. subsp. japonicus | 483485 | | i | Petasites japonicus (Siebold & Zucc.) Maxim. var.japonicus | Petasites japonicus (Siebold & Zucc.) Maxim. subsp. japonicus |
| 485931 | Petasites tricholobus Franch. | | | a | | Petasites tricholobus Franch. | |