| Name | Eriogonum microthecum var. simpsonii (Bentham) Reveal |
| Authorship | (Bentham) Reveal |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Eriogonum microthecum Nuttall |
| Holdings | 66 Specimens held in the Harvard University Herbaria identified as Eriogonum microthecum var. simpsonii (Bentham) Reveal |
| Identification made in | [no date] (22), 1968 (1), 1992 (43) |