| Name | Geothallus tuberosus Campbell |
| Authorship | Campbell |
| Rank | Species |
| Placed in | Geothallus |
| Citation | 1896 Bot. Gaz. 21: 13 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Geothallus tuberosus Campbell |
| Identification made in | [no date] (1) |
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