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CCDB → Pteridophytes → Ophioglossaceae → Ophioglossum → Ophioglossum costatum R. Br.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Ophioglossum costatum R. Br. | Ophioglossum costatum R. Br. | 100, 110, 115, 116, 120, 240 | IPCN online | Khandelwal, S. 1990. Chromosome evolution in the genus Ophioglossum L. Bot. J. Linn. Soc. 102(3): 205–217. | |||
| ! | Ophioglossum costatum R. Br. | Ophioglossum costatum R. Br. | c.200 | Love, 1977 | Maheswari & Singh 1934 | ||
| ! | Ophioglossum costatum R. Br. | Ophioglossum costatum R. Br. | 240 | Love, 1977 | Ninan 1956b | ||
| ! | Ophioglossum costatum R. Br. | Ophioglossum costatum R. Br. | 240 | Love, 1977 | Ninan 1958a | ||
| ! | Ophioglossum costatum R. Br. | Ophioglossum costatum R. Br. | c.232 | Love, 1977 | Manton 1959 | ||
| ! | Ophioglossum costatum R. Br. | Ophioglossum costatum R. Br. | 120 | Cave1956 | Ninan b |