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CCDB → Pteridophytes → Osmundaceae → Osmunda → Osmunda lancea Thunb.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Osmunda lancea Thunb. | Osmunda lancea Thunb. | 22 | IPCN65 | Hirabayashi 1963 | |||
| ! | Osmunda lancea Thunb. | Osmunda lancea Thunb. | 44 | IPCN66 | Tatuno & Yoshida 1966 | ||
| ! | Osmunda lancea Thunb. | Osmunda lancea Thunb. | 22 | IPCN67-71 | MITUI, K. 1968. Chromosomes and speciation in ferns. Sci. Rep. Tokyo Kyoiku Daigaku Sect. B 13: 285-333. | ||
| ! | Osmunda lancea Thunb. | Osmunda lancea Thunb. | 22 | IPCN67-71 | HIRABAYASHI, H. 1963. Chromosome numbers in Japanese Osmunda. J. Jap. Bot. 38: 332-333. | ||
| ! | Osmunda lancea Thunb. | Osmunda lancea Thunb. | 44 | Love, 1977 | Hirabayashi 1963 | ||
| ! | Osmunda lancea Thunb. | Osmunda lancea Thunb. | 44 | Love, 1977 | Kurita 1963a | ||
| ! | Osmunda lancea Thunb. | Osmunda lancea Thunb. | 44 | Love, 1977 | Tatuno & Yoshida 1966 | ||
| ! | Osmunda lancea Thunb. | Osmunda lancea Thunb. | 44 | Love, 1977 | Mitui 1968 |