| Name | Hymenopappus flavescens var. canotomentosus Rothrock |
| Authorship | Rothrock |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Hymenopappus flavescens A. Gray |
| GUID | urn:lsid:ipni.org:names:77084258-1 |
| Citation | 1879 Rep. U.S. Geogr. Surv., Wheeler 167 |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Hymenopappus flavescens var. canotomentosus Rothrock |
| Identification made in | [no date] (1), 1953 (3), 2007 (2), 2008 (1) |