| Name | Cladonia portentosa (Dufour) Coemans |
| Authorship | (Dufour) Coemans |
| Rank | Species |
| Placed in | Cladonia P. Browne |
| Contains | Cladonia portentosa f. erinacea (Desmazières) Sandstede Cladonia portentosa subsp. pacifica Ahti |
| GUID | urn:lsid:indexfungorum.org:names:382938 |
| Citation | 1865 Bull. Acad. Roy. Sci. Belgique, Cl. Sci. ser. 2, 19: 43 |
| Holdings | 31 Specimens held in the Harvard University Herbaria identified as Cladonia portentosa (Dufour) Coemans |
| Identification made in | [no date] (31) |