| Name | Cladonia cornuta subsp. groenlandica (Å. Dahl) Ahti |
| Authorship | (Å. Dahl) Ahti |
| Rank | Subspecies |
| Placed in | Cladonia cornuta (Linnaeus) Hoffmann |
| Citation | 1980 Ann. Bot. Fenn. 17(2): 221 |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Cladonia cornuta subsp. groenlandica (Å. Dahl) Ahti |
| Identification made in | [no date] (12) |
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