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CCDB → Angiosperms → Compositae → Cirsium → Cirsium acaulescens (Rydb.) K. Schum.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Cirsium acaulescens (Rydb.) K. Schum. | Cirsium scariosum var. americanum (A. Gray) 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. |