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CCDB → Pteridophytes → Osmundaceae → Osmunda → Osmunda claytoniana L.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Osmunda claytoniana L. | Osmunda claytoniana L. | 22 | IPCN65 | Hirabayashi 1963 | |||
| Osmunda claytoniana L. | Osmunda claytoniana L. | 22 | IPCN online | Bir, S. S. & G. S. Rai. 1984. SOCGI plant chromosome number reports -- II. J. Cytol. Genet. 19: 111–112. | |||
| ! | Osmunda claytoniana L. | Osmunda claytoniana L. | 22 | IPCN67-71 | HIRABAYASHI, H. 1963. Chromosome numbers in Japanese Osmunda. J. Jap. Bot. 38: 332-333. | ||
| ! | Osmundastrum claytonianum (L.) Tagawa | Osmunda claytoniana L. | 44 | IPCN67-71 | TATUNO, s . & H. YOSHIDA. 1967. Karyological studies on Osmundaceae II. Chromosomes of the genus Osmundastrum and Plenasium in Japan. Bot. Mag. Tokyo 80: 130 138. | ||
| ! | Osmunda claytoniana L. | Osmunda claytoniana L. | 44 | Love, 1977 | Britton (in Fabbri 1963) | ||
| ! | Osmunda claytoniana L. | Osmunda claytoniana L. | 44 | Love, 1977 | Britton 1964 | ||
| ! | Osmunda claytoniana L. | Osmunda claytoniana L. | 44 | Love, 1977 | Love & Love 1966b | ||
| ! | Osmunda claytoniana L. | Osmunda claytoniana L. | 44 | Love, 1977 | Wagner, Farrar & McAlpin 1970 | ||
| ! | Osmunda claytoniana L. | Osmunda claytoniana L. | 44 | eFlora | |||
| ! | Osmunda claytoniana L. | Osmunda claytoniana L. | 22 | Cave1962 | Bir 1962b | ||
| Osmunda claytoniana L. | Osmunda claytoniana L. | 22 | Cave1963 | Britton in Fabbri 1963 |