| Name | Gyalecta geoica f. trivialis Tuckerman |
| Authorship | Tuckerman |
| Rank | Forma |
| Placed in | Gyalecta geoica (Wahlenberg ex Acharius) Acharius |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Gyalecta geoica f. trivialis Tuckerman |
| Identification made in | [no date] (3) |
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