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CCDB → Angiosperms → Compositae → Tithonia → Tithonia calva S. Bip.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Tithonia calva S. Bip. | Tithonia calva S. Bip. | 17(1) | Asteracea | Turner & F. 1966 Amer. J. Bot. | ||
| ! | Tithonia calva S. Bip. | Tithonia calva S. Bip. | 11 | IPCN online | Keil, D. J. & D. J. Pinkava. 1976. Chromosome counts and taxonomic notes for Compositae from the United States and Mexico. Amer. J. Bot. 63: 1393–1403. | ||
| ! | Tithonia calva S. Bip. | Tithonia calva S. Bip. | 17 | IPCN online | Keil, D. J. & T. F. Stuessy. 1975. Chromosome counts of Compositae from the United States, Mexico and Guatemala. Rhodora 77: 171–195. | ||
| ! | Tithonia calva S. Bip. | Tithonia calva S. Bip. | 17 | IPCN66 | Turner & Flyr 1966 | ||
| ! | Tithonia calva S. Bip. | Tithonia calva S. Bip. | 34 | Fedorov, 1974 | Turner, Flyr 1966 |