| Name | Pseudoomphalina pachyphylla (Fries) Knudsen |
| Authorship | (Fries) Knudsen |
| Rank | Species |
| Placed in | Pseudoomphalina (Singer) Singer |
| Citation | 1992 Nord. J. Bot. 12(1): 76 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Pseudoomphalina pachyphylla (Fries) Knudsen |
| Identification made in | [no date] (1) |