| Name | Cladonia umbricola T. Tonsberg & T. T. Ahti |
| Authorship | T. Tonsberg & T. T. Ahti |
| Rank | Species |
| Placed in | Cladonia P. Browne |
| Citation | 1980 Norweg. J. Bot. 27: 307 |
| Holdings | 44 Specimens held in the Harvard University Herbaria identified as Cladonia umbricola T. Tonsberg & T. T. Ahti |
| Identification made in | [no date] (44) |
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