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On boulder at E foot of mount on screes. Alt. 100 m. Mt. Flagstaff, Keller Peninsula, Admiralty Bay, King George Island. South Shetland Islands

On eastern slope below the summit on rocks associated with Dicranoweisia grimmiacea. Alt. 230 m. Mt. Flagstaff, Keller Peninsula, Admiralty Bay, King George Island. South Shetland Islands

On boulders in scree on eastern slope. Alt. 45 m. Rescuers Hills between Ecology Glacier and Sphinx Glacier, Admiralty Bay, King George Island. South Shetland Islands

On andesite rocks on NW-facing slope. Alt. 30 m. Small green alp called Hala at Arctowski Station, Admiralty Bay, King George Island. South Shetland Islands

On slightly sheltered andesite boulder on northern slope. Alt. 110 m. Mountain slope called Ubocz, south of Arctowski Station, Admiralty Bay, King George Island. South Shetland Islands

In a small snow melt stream. Alt. 1300-1400 ft. On ridge SE of Summit Pass, Hope Bay. Antarctic Peninsula, Trinity Peninsula, East Coast

On rock faces and boulders. Alt. 15-35 m. East side of Lagoon Island. Antarctic Peninsula

On dry rock surfaces. Alt. 20-50 m. North side of Leonie Island. Antarctic Peninsula

Boulders in scree. Alt. 30 m. North side of Leonie Island. Antarctic Peninsula

West-facing, dry rock surface. Alt. 70 m. Cuverville Island. Antarctic Peninsula, Danco Coast

Rock ledge, damp. Alt. 15 m. Cape area, Cape Tuxen. Antarctic Peninsula, Graham Coast

On surfaces and in rock crevices, often exposed. Alt. 200 m. Cape Primavera. Antarctic Peninsula, Danco Coast

On dry to wet surfaces of rocks and boulders. Alt. 5-700 m. Cape Primavera. Antarctic Peninsula, Danco Coast

On soil close to the sea. Alt. 0.20 m. Fildes Bay, near to Ardley Peninsula, King George Island. South Shetland Islands

Loose scree and boulders, Alt. 158 m. Walker Point, Elephant Island. South Shetland Islands

On soil stripe, Alt. 244 m. bluff 0.5 km. SW of Sultan Glacier, Elephant Island. South Shetland Islands

Between rocks, very wet from melt-water on steep, west-facing slope, Alt. c. 1350 ft. NE end of Marescot Ridge, Trinity Peninsula. Antarctic Peninsula, Trinity Peninsula, West Coast

Scattered tufts in depression in ash plain, Alt. 50 ft. Between Kroner Lake and Ronald Hill, Deception Island. South Shetland Islands

Boulder in sheltered gully, Alt. 50 ft. North coast of Petermann Island. Antarctic Peninsula, Graham Coast

With Usnea on dry fairly exposed inclined NW facing rocks, Alt. 50 ft. Coast by Stella Creek, Galindez Island, Argentine Islands. Antarctic Peninsula, Graham Coast

Moraine, Alt. 1348 m. Cliff top, 0.5 km. south of Stinker Point, Elephant Island. South Shetland Islands

Rocks recently exposed from snow, Alt. 20 ft. North side of Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

Moist or dry rocks, Alt. 200 ft. Behind Shackleton House, Cumberland East Bay. South Georgia

South facing rock scree, Alt. 20 m. 20 m west of north summit, Cormorant Island, Danco Coast. Antarctic Peninsula, Danco Coast

North facing rock ledge in shallow soil, Alt. 8 m. South-west end of central gully, Cormorant Island, Danco Coast. Antarctic Peninsula, Danco Coast

Scree and drift, Alt. 100 ft. Moraine Valley, Signy Island. South Orkney Islands

Rocky ground on steep slope, Alt. 300 ft. Above the hut, Shingle Cove, Coronation Island. South Orkney Islands

Boulder faces behind whalers dam, Alt. 30 ft. Factory Cove, Signy Island. South Orkney Islands

Top of boulder behind reservoir, Alt. 30 ft. Factory Cove, Signy Island. South Orkney Islands

Faces of boulders on scree in west-facing cliffs, Alt. 600 ft. Windscoop Buttress, Coronation Island. South Orkney Islands

Boulders on west-facing scree, Alt. 80 ft. Factory Cove, Signy Island. South Orkney Islands

In very wet crevices on steep rocks between Polytrichum plateaus. Alt. c. 25 m. Mountain slope, Cuverville Island. Antarctic Peninsula, Danco Coast

East-facing cushion, base of damp boulders in north-facing scree, Alt. 50 ft. south-west shore, Factory Cove, Signy Island. South Orkney Islands

North-facing rock crevice, Alt. 100 ft. South-west of Factory Cove, r South-west of Factory Cove, Signy Island. South Orkney Islands

North face of boulder, Alt. 100 ft. Top of slope behind base, Signy Island. South Orkney Islands

Boulder faces, Alt. 100 ft. Below hut near Foca Point, Signy Island. South Orkney Islands

North face of small boulder, Alt. 10 m. Behind reservoir in Factory Cove, Signy Island. South Orkney Islands

Forming a mat, Alt. 250 ft. Upper part of Observation Bluff, Signy Island. South Orkney Islands

North-east facing, eroded Chorisodontium bank partially recolonised, Alt. 200 ft. Cape Dundas, Laurie Island. South Orkney Islands

Olivine Point, Coronation Island. South Orkney Islands

On dry cinders of ash crater, Alt. c. 35 ft. Below Ronald Hill, Deception Island. South Shetland Islands

Frequent on rock surfaces, Alt. 50-100 ft. Hermit Island, Arthur Harbour, Anvers Island, Danco Coast. Antarctic Peninsula, Danco Coast

Rocks, 5 miles inland, NW of Cape Alexander, Adelaide Island. Antarctic Peninsula, Fallieres Coast

Bahia Armonia, Nelson Island. South Shetland Islands

Alt. 5-210 m. Moe Island, off Signy Island. South Orkney Islands

In crack on low lying windswept granite exposure, Alt. 600ft. Lepley Nunatak, Eights Coast. Antarctica, Byrd Sector

On moist rock crevice, Alt. 600 ft. West-facing rock outcrops and scree on east side of Bore Valley. South Georgia

Exposed rock surface, Alt. 400 ft. North-facing rock outcrop west of Craigie Point, Right Whale Bay. South Georgia

With parasitic fungal hyphea (which form hyphal rings on the surface), Alt. 250 m. Rusty Bluff, Signy Island. South Orkney Islands

Tierra del Fuego australis, Ushuaia, Monte Susana E, en lado sombrio de roca esquista, 300 m.s.m., muy copiosamente. South America, Argentina