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 tracyi (Rydb.) Petr.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Cirsium tracyi (Rydb.) Petr. | Cirsium tracyi (Rydb.) Petr. | 24(1) | Asteracea | Ownbey et al. 1975 Brittonia | ||
| Cirsium tracyi (Rydb.) Petr. | Cirsium tracyi (Rydb.) Petr. | 24 | 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 tracyi (Rydb.) Petr. | Cirsium tracyi (Rydb.) Petr. | 24 | eFlora | |||
| ! | Cirsium tracyi (Rydb.) Petr. | Cirsium tracyi (Rydb.) Petr. | 24 | Cave1963 | Moore & Frank, 1963; Ownbey & Hsi 1963 |