| Name | Cladonia didyma var. vulcanica (Zollinger & Moritzi) Vainio |
| Authorship | (Zollinger & Moritzi) Vainio |
| Rank | Variety |
| Placed in | Cladonia didyma (Fée) Vainio |
| Holdings | 16 Specimens held in the Harvard University Herbaria identified as Cladonia didyma var. vulcanica (Zollinger & Moritzi) Vainio |
| Identification made in | [no date] (16) |
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