| Name | Aecidium crassum Persoon: Persoon |
| Authorship | Persoon: Persoon |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Aecidium |
| Contains | Aecidium crassum f. rhamni-cathartici Saccardo Aecidium crassum f. rhamni-saxatilis Saccardo |
| Citation | 1797 Tent. Disp. Meth. Fung. 55 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Aecidium crassum Persoon: Persoon |
| Identification made in | [no date] (5) |
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