| Name | Cladonia tenuis (Flörke) Harmand | 
| Authorship | (Flörke) Harmand | 
| Rank | Species | 
| Placed in | Cladonia P. Browne | 
| Contains | Cladonia tenuis f. decumbens (Harmand) Harmand Cladonia tenuis f. flavicans Flörke | 
| Holdings | 265 Specimens held in the Harvard University Herbaria identified as Cladonia tenuis (Flörke) Harmand | 
| Identification made in | [no date] (265) |