Index → Petals → Physcia → P. caesia Location: Northwest Territories, near MacKay Lake
Date: 2011-08-00
Photo by: Curtis Björk
Notes: On siliceous cliff in brushy tundra near frequently used bird perch
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 Location: Alaska, Glacier Bay National Park, Bartlett Cove
Date: 2012-05-01
Photo by: Toby Spribille
Notes: Intertidal rocks
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 Location: Canada, Québec, Parc national de la Gaspésie, Mt. Albert
Date: 2013
Photo by: Troy McMullin
Notes: arctic-alpine; on rock [McMullin 9553]
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 Location: Washington State, Skagit County, Redondo Beach
Date: March, 2008
Photo by: Curtis Björk
Notes: On near-tide line rocks
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 Location: California, Owens Valley
Date: 2015-02-14
Photo by: Jason Hollinger
Notes: on overhanging face of granite boulder in creek
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 Location: Washington, channeled scablands
Date: 2013-04-18
Photo by: Jason Hollinger
Notes: on basalt; this form with marginal soralia is called P. subalbinea by T. Esslinger [Hollinger 5025]
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 Location: South Dakota, Black Hills
Date: 2011-07-08
Photo by: Jason Hollinger
Notes: on rock [Hollinger 3279]
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 Location: South Dakota, Black Hills
Date: 2011-07-08
Photo by: Jason Hollinger
Notes: on rock [Hollinger 3279]
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 Location: Washington State, Skagit County, Redondo Beach
Date: March, 2008
Photo by: Curtis Björk
Notes: On near-tide line rocks
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 Location: New Mexico, near Taos
Date: 2011-03-28
Photo by: Jason Hollinger
Notes: on basalt [Hollinger 2444]
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 Location: New Mexico, near Taos
Date: 2011-03-28
Photo by: Jason Hollinger
Notes: on basalt [Hollinger 2444]
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 Location: New Mexico, near Taos
Date: 2011-03-28
Photo by: Jason Hollinger
Notes: on basalt [Hollinger 2444]
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 Location: Sooke Regional Park, southern Vancouver Island, near Victoria
Date: 2011-11-05
Photo by: Curtis Björk
Notes: Saxicolous, on rock shortly above high tide, sheltered site
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 Location: Sooke Regional Park, southern Vancouver Island, near Victoria
Date: 2011-11-05
Photo by: Curtis Björk
Notes: Saxicolous, on rock shortly above high tide, sheltered site
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 Location: Sooke Regional Park, southern Vancouver Island, near Victoria
Date: 2011-11-05
Photo by: Curtis Björk
Notes: Saxicolous, on rock shortly above high tide, sheltered site
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 Location: British Columbia, Coast Ranges, Bute Inlet
Date: June, 2008
Photo by: Curtis Björk
Notes: On near-tide line rocks, granitic
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