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Overview
| Synopsis:
| Dark brown glossy thallus with slightly more open branching than H. bitteri, along with soralia that are punctate to volcano-like and bursting in the centers; lobes subcontiguous to more often suberect, pale brown, brown, or pale greenish gray with black mottling.
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| Distribution:
| Numerous localities on the Aleutian Islands, other islands in the Bering Sea, the Seward Peninsula, and the Alaska Peninsula. So far it is unknown from Beringean Russia, but is to be expected.
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| Habitat:
| arctic tundra
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| Range:
| Arctic, Subarctic, Alpine
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| Other Diagnostics: | Dark brown glossy thallus with slightly more open branching than H. bitteri, along with distinctive soralia. Soredia in discrete soralia that are punctate to volcano-like and bursting in the centers; lobes subcontiguous to more often suberect, pale brown, brown, or pale greenish gray with black mottling.
| | Substrate Notes: | On siliceous rock and lichens and detritus over rock
| | Abundance in North America: | Present
| | Substrate: | Never
| | Host: | N.A.
| | On Rock: | Typically
| | On Moss/Detritus/Sod: | Never
| | Authority: | Krog
| | References: | McCune (2008)
| | Synonymy: | None
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Habit
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Reproductive Structures
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Soredia developmental sequence
5/8
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