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CCDB → Angiosperms → Compositae → Cirsium → Cirsium nidulum (M. E. Jones) Petr.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Cirsium nidulum (M. E. Jones) Petr. | Cirsium arizonicum (A. Gray) Petr. | 16II(1) | Asteracea | Keil & P. 1976 Amer. J. Bot. | ||
| ! | Cirsium nidulum (M. E. Jones) Petr. | Cirsium arizonicum (A. Gray) Petr. | 16 | 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. | ||
| ! | Cirsium nidulum (M. E. Jones) Petr. | Cirsium arizonicum (A. Gray) Petr. | 34 | IPCN73-74 | MOORE, R.J., & C. FRANKTON. 1974. The Cirsiurn arizonicurn complex of the southwestern United States. Canad. J. Bot. 52: 543 551. |