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CCDB → Angiosperms → Compositae → Cirsium → Cirsium terrae-nigrae Shinners
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Cirsium terrae-nigrae Shinners | Cirsium engelmannii Rydb. | 18 | IPCN67-71 | OWNBEY, G.B., & W.A. OLSON. 1969. Cytotaxonomic notes on the species of Cirsium native to the Southeastern United States. Rhodora 71: 285-296. |