| Umbilicaria arctica var. diomedensis Llano | ISOTYPE | O-L-122630 | Click on image for full size (36 MPx)
| Protolog: Llano,GA, A Monograph of the Lichen Family Umbilicariaceae in the Western Hemisphere : (1950)
| | Locality: -: Behring Str: Diomede isl., 1924., Palmer
| Currently accepted name: Umbilicaria arctica (Ach.) Nyl.
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