| Name | Machaeranthera canescens var. alpina Porter |
| Authorship | Porter |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Machaeranthera canescens A. Gray |
| GUID | urn:lsid:ipni.org:names:148325-2 |
| Citation | 1874 Syn. Fl. Colorado 4: 59 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Machaeranthera canescens var. alpina Porter |
| Identification made in | 1986 (1) |