Index → Buttons → Rhizocarpon → R. geminatum= Rhizocarpon concretum (Ach.) Elenkin
 Location: British Columbia, Clearwater Valley
Date: 2011-10-09
Photo by: Curtis Björk
Notes: On basalt talus, clearing in mixed conifer-deciduous forest
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 Location: Nevada, Humboldt Range
Date: 2014-10-09
Photo by: Jason Hollinger
Notes: on granite [Hollinger 7728]
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 Location: Nevada, Humboldt Range
Date: 2014-10-09
Photo by: Jason Hollinger
Notes: on granite [Hollinger 7728]
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 Location: Nevada, Humboldt Range
Date: 2014-10-09
Photo by: Jason Hollinger
Notes: on vertical granite near drainage channel [Hollinger 7681]
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 Location: Nevada, Humboldt Range
Date: 2014-10-09
Photo by: Jason Hollinger
Notes: on granite [Hollinger 7728]
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 Location: California, Owens Valley
Date: 2015-02-14
Photo by: Jason Hollinger
Notes: on granite boulders next to stream [Hollinger 7232]
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 Location: British Columbia, Clearwater Valley
Date: 2010-11-03
Photo by: Curtis Björk
Notes: On basalt boulder in mixed conifer-deciduous forest
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