| Name | Radulum orbiculare Fries: Fries |
| Authorship | Fries: Fries |
| Rank | Species |
| Placed in | Radulum |
| Citation | 1825 Syst. Orb. Veg. 1: 81 |
| Holdings | 37 Specimens held in the Harvard University Herbaria identified as Radulum orbiculare Fries: Fries |
| Identification made in | [no date] (37) |
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