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CCDB → Angiosperms → Compositae → Cirsium → Cirsium tioganum (Congdon) Petr.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Cirsium tioganum (Congdon) Petr. | Cirsium scariosum var. americanum (A. Gray) D. J. Keil | 32,34 | IPCN online | Ownbey, G. B., P. H. Raven & D. W. Kyhos. 1975 [1976]. Chromosome numbers in some North American species of the genus Cirsium. III. Western United States, Mexico, and Guatemala. Brittonia 27(4): 297–304. | |||
| ! | Cirsium tioganum (Congdon) Petr. | Cirsium scariosum var. americanum (A. Gray) D. J. Keil | 34 | IPCN67-71 | OWNBEY, G.B., & Y-T. HSI. 1969. Chromosome numbers in some North American species of the genus Cirsium. II. Western United states. Madrono 20: 225-228. |