| Name | Isariopsis pusilla Fresenius |
| Authorship | Fresenius |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Isariopsis |
| Citation | 1863 Beitr. Mykol. 3: 87 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Isariopsis pusilla Fresenius |
| Identification made in | [no date] (1) |