| Name | Protogaster rhizophilus Thaxter |
| Authorship | Thaxter |
| Rank | Species |
| Placed in | Protogaster Thaxter |
| GUID | urn:lsid:indexfungorum.org:names:232088 |
| Citation | 1934 Ann. Missouri Bot. Gard. 21: 236 |
| Holdings | 13 Specimens held in the Harvard University Herbaria identified as Protogaster rhizophilus Thaxter |
| Identification made in | [no date] (13) |