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CCDB → Angiosperms → Compositae → Cirsium → Cirsium horridulum Michx.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Cirsium horridulum subsp. horridulum | Cirsium horridulum Michx. | 31, 32(2, 1) | Asteracea | Moore ＆ F. 1966 Canad. J. Bot. (= Botany) | ||
| Cirsium horridulum Michx. | Cirsium horridulum Michx. | 16(1) | Asteracea | Turner et al. 1961a Amer. J. Bot. | |||
| Cirsium horridulum Michx. | Cirsium horridulum Michx. | 32 | 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 vittatum (Small) Small | Cirsium horridulum Michx. | 32 | 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 horridulum Michx. | Cirsium horridulum Michx. | 34 | IPCN66 | Moore & Frankton 1966 | |||
| ! | Cirsium horridulum subsp. horridulum | Cirsium horridulum Michx. | 31,32 | IPCN66 | Moore & Frankton 1966 | ||
| Cirsium horridulum Michx. | Cirsium horridulum Michx. | 32, 34 | IPCN67-71 | MOORE, R.J., & C. FRANKTON. 1969. Cytotaxonomy of some Cirsium species of the eastern United States, with a key to eastern species. Canad. J. Bot. 4 7 : 125 7 - 12 7 5 . | |||
| Cirsium horridulum Michx. | Cirsium horridulum Michx. | 32(33, 34) | 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. | |||
| ! | Cirsium vittatum (Small) Small | Cirsium horridulum Michx. | 32, 34, (33, 35) | 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. | ||
| Cirsium horridulum var. horridulum | Cirsium horridulum Michx. | 32,34 | eFlora | ||||
| Cirsium horridulum Michx. | Cirsium horridulum Michx. | 34 | Cave1962 | Lewis et al. 1962 | |||
| Cirsium horridulum Michx. | Cirsium horridulum Michx. | 16 | Cave1963 | Ownbey & Hsi 1963 |