CCDB is a community resource. If you are aware of any missing data or if any of the counts are erroneous please submit it to the forms submit new counts, or report erroneous counts.
CCDB → Angiosperms → Compositae → Cirsium → Cirsium coloradense (Rydb.) Cockerell
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Cirsium coloradense (Rydb.) Cockerell | Cirsium scariosum var. coloradense (Rydb.) D. J. Keil | 17 | IPCN online | Pinkava, D. J. & D. J. Keil. 1977. Chromosome counts of Compositae from the United States and Mexico. Amer. J. Bot. 64: 680–686. | ||
| ! | Cirsium coloradense (Rydb.) Cockerell | Cirsium scariosum var. coloradense (Rydb.) D. J. Keil | 34, 36(?) | 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. | ||
| ! | Cirsium coloradense (Rydb.) Cockerell | Cirsium scariosum var. coloradense (Rydb.) D. J. Keil | 34 | IPCN67-71 | MOORE, R. J., & c. FRANKTON. 1967. Cytotaxonomy Of foliose thistles (Cirsium ssp. aff. c. foliosum) of Western North America. Canad. Jour. Bot. 45: 1733-1749. | ||
| Cirsium coloradense (Rydb.) Cockerell | Cirsium scariosum var. coloradense (Rydb.) D. J. Keil | 16, 17 | IPCN73-74 | GARDNER, R. C. 19 7 4 . Systematics of Cirsium (Compositae) in Wyoming. Madrono 22: 239-265. |