| Name | Cladonia cristatella f. abbreviata G. Merrill |
| Authorship | G. Merrill |
| Rank | Forma |
| Placed in | Cladonia cristatella Tuckerman |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Cladonia cristatella f. abbreviata G. Merrill |
| Identification made in | [no date] (1) |