| Cetraria nigricans f. sorediata E. Dahl | HOLOTYPE | O-L-000265 | Click on image for full size (36 MPx)
| Protolog: Dahl,E, Meddel. Grønland 150, 2: 139 (1950)
| | Locality: GREENLAND: Julianehaab distrikt, Tunugdliarfik: Ca. 3 km nordøst for Narssaqfjell, 1937.07.15, Dahl, E.
| Currently accepted name: Cetraria nigricans Nyl.
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