| Name | Hypsizygus ulmarius (Bulliard) Redhead: Fries |
| Authorship | (Bulliard) Redhead: Fries |
| Rank | Species |
| Placed in | Hypsizygus |
| Citation | 1984 Trans. Mycol. Soc. Japan 25(1): 3 |
| Holdings | 16 Specimens held in the Harvard University Herbaria identified as Hypsizygus ulmarius (Bulliard) Redhead: Fries |
| Identification made in | [no date] (16) |