| Xylorhiza brandegeei Rydb. | Xanthisma coloradoense (A.Gray) D.R.Morgan & R.L.Hartm. trib. Astereae |
| Xylorhiza coloradoensis (A.Gray) Rydb. | Xanthisma coloradoense (A.Gray) D.R.Morgan & R.L.Hartm. trib. Astereae |
| Xylorhiza glabriuscula linearifolia T.J.Watson, Brittonia 29: 215 (1997) | Xylorhiza linearifolia (T.J.Watson) G.L.Nesom trib. Astereae |
| Xylorhiza glabriuscula villosa (Nutt.) A.Nelson | Xylorhiza glabriuscula Nutt. trib. Astereae |
| Xylorhiza parryi (A.Gray) Greene | Xylorhiza glabriuscula Nutt. trib. Astereae |
| Xylorhiza villosa Nutt. | Xylorhiza glabriuscula Nutt. trib. Astereae |