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CCDB → Angiosperms → Gentianaceae → Exacum → Exacum tetragonum Roxb.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Exacum perrottetii Griseb. | Exacum tetragonum Roxb. | 68 | IPCN online | Mallikarjuna, M. B., A. SHERIFF & D. G. Krishnappa. 1987. Chromosome Number Reports 97. Taxon 36: 766–767. | |||
| Exacum perrottetii Griseb. | Exacum tetragonum Roxb. | 68 | IPCN online | Mallikarjuna, M. B. 1985. Karyomorphological and cytotaxonomic studies in the family Gentianaceae. Ph.D. Thesis, Bangalore University. ý. | |||
| Exacum bicolor Roxb. | Exacum tetragonum Roxb. | 62 | IPCN online | Mallikarjuna, M. B., A. SHERIFF & D. G. Krishnappa. 1987. Chromosome Number Reports 97. Taxon 36: 766–767. | |||
| Exacum bicolor Roxb. | Exacum tetragonum Roxb. | 62 | IPCN online | Mallikarjuna, M. B. 1985. Karyomorphological and cytotaxonomic studies in the family Gentianaceae. Ph.D. Thesis, Bangalore University. ý. | |||
| Exacum tetragonum Roxb. | Exacum tetragonum Roxb. | 18 | Kumar, 1987 | Borgmann, E. 1964 | |||
| ! | Exacum tetragonum Roxb. | Exacum tetragonum Roxb. | 18 | Fedorov, 1974 | Borgmann 1964 |