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CCDB → Angiosperms → Compositae → Petasites → Petasites amplus Kitam.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Petasites amplus Kitam. | Petasites japonicus subsp. giganteus F. Schmidt ex Kitam. | 60+0-7Bs(9) | Asteracea | Funamoto et al. 1981 La Kromosomo II. | |||
| Petasites amplus Kitam. | Petasites japonicus subsp. giganteus F. Schmidt ex Kitam. | 60(1) | Asteracea | Probatova et al. 2000 Nat. Hist. Res. (Chiba, Japan). | |||
| ! | Petasites amplus Kitam. | Petasites japonicus subsp. giganteus F. Schmidt ex Kitam. | c.60 | IPCN65 | Sokolovskaya 196i | ||
| Petasites amplus Kitam. | Petasites japonicus subsp. giganteus F. Schmidt ex Kitam. | ~60 | Fedorov, 1974 | CoJWJIOBCKaH 1960a, 6, Ph | |||
| Petasites amplus Kitam. | Petasites japonicus subsp. giganteus F. Schmidt ex Kitam. | 87 | Fedorov, 1974 | Funabiki 1958b |