| Name | Rhizomarasmius R. H. Petersen |
| Authorship | R. H. Petersen |
| Rank | Genus |
| NomenclaturalStatus | NomLeg |
| Placed in | Xerulaceae |
| Contains | Rhizomarasmius sp. |
| Remarks | Type: R. pyrrhocephalus (Berk.) R. H. Petersen (based on Marasmius pyrrhocephalus Berk.) |
| Citation | 2000 Mycotaxon 75: 333 |