| Name | Cladonia tenuis f. decumbens (Harmand) Harmand |
| Authorship | (Harmand) Harmand |
| Rank | Forma |
| Placed in | Cladonia tenuis (Flörke) Harmand |
| GUID | urn:lsid:indexfungorum.org:names:466645 |
| Holdings | 14 Specimens held in the Harvard University Herbaria identified as Cladonia tenuis f. decumbens (Harmand) Harmand |
| Identification made in | [no date] (14) |