| Name | Peziza improvisa P. Karsten |
| Authorship | P. Karsten |
| Rank | Species |
| Placed in | Peziza Fries: Fries |
| Citation | 1861 Syn. Peziz. Ascob. Fenn. 17 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Peziza improvisa P. Karsten |
| Identification made in | [no date] (1) |
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