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Overview
| Synopsis:
| Erect, dactylina-like black-mottled lobes with isotomic dichotomous branching, sparsely perforate, lobe cavity with white or dark ceilings and dark floors, on tundra sod or rocks
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| Distribution:
| Alaska (Aleutian Islands and islands in the Bering Sea) and Russia. The sole record from Russia, Mattson 3114 (Figs. 5-6), is uncertain. Aleutian Islands: St Paul Island, Nunivak Island (Nash Harbor) (Krog 1968); Port Clarence (Bering Strait) on the Harriman Expedition (Cummings 1904).
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| Habitat:
| oceanic tundra
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| Range:
| Arctic, Subarctic, Alpine
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| Other Diagnostics: | Erect, Dactylina-like growth form
| | Substrate Notes: | Oceanic tundra, on mosses or detritus, or rock.
| | Abundance in North America: | Rare
| | Substrate: | Never
| | Host: | N.A.
| | On Rock: | Typically
| | On Moss/Detritus/Sod: | Occasional
| | Authority: | Krog
| | References: | McCune (2008)
| | Synonymy: | Hypogymnia lugubris subsp. beringiana
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Habit
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