| Name | Pleiacanthus (Nuttall) Rydberg |
| Authorship | (Nuttall) Rydberg |
| Rank | Genus |
| NomenclaturalStatus | NomLeg |
| Placed in | Asteraceae |
| Contains | Pleiacanthus sp. Pleiacanthus spinosus (Nuttall) Rydberg |
| Remarks | Basionym: Lycodesmia subg. Pleiacanthus T. Nuttall, Trans. Amer. Philos. Soc. ser. 2, 7: 335. post 2 Oct. 1840; Type: P. spinosus (T. Nuttall) Rydberg (Lygodesmia spinosa T. Nuttall) |
| Citation | 31 Dec 1017 Fl. Rocky Mts. 1023, 1069 |