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On rock, Alt. c. 50 ft. Neny Island, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

On dry rock surfaces, Alt. c. 100 ft. Hermit Island, Arthur Harbour, Anvers Island, Danco Coast. Antarctic Peninsula, Danco Coast

North-facing cliff, Alt. 61 m. Cliff top 0.5 km. south of Stinker Point, Elephant Island. South Shetland Islands

Inclined rocks in sheltered gully, Usnea community, Alt. 50 ft. Rock outcrop by BAS station, Adelaide Island. Antarctic Peninsula, Fallieres Coast

North facing scree below nitrogenous cliffs, Alt. 50 ft. SE Factory Cove, Signy Island. South Orkney Islands

Dry stones on raised beach near hut. Alt. 5 m. Blaiklock Island. Antarctic Peninsula, Loubet Coast

Crevices of wet rocks by edge of river, Alt. c. 50 ft. East edge of Survey Isthmus, near mouth of river draining into Undine Harbour. South Georgia

On north facing, wet, rock faces, beside waterfall, Alt. c. 25 ft. South shore of Sunset Fjord, Bay of Isles. South Georgia

On south-facing, rock faces, above shore, Alt. c. 50 ft. Between Moltke Harbour and Koppen Point, Royal Bay. South Georgia

On rotting log in Nothofagus betuloides foreset behind shore of island. Alt. 10 m. South shore of unnamed bay c. 1 km north of Bahia Angelica, Caleta Nantuel, Isla Vidal Gormaz, Depto. Ultima Esperanza, Prov. Magallanes. South America, Chile

Flattened cushions on granite rocks. Alt. 1,500 ft. Abra Kelly. South America, Chile

Wet rocks by shore of Seno. Alt. 5 m. Southern shore of Peninsula de las Montanas, Ancon Sin Salida, Seno Union, Depto. Ultima Esperanza, Prov. Magallanes. South America, Chile

Flat scree at south-west edge of bare ground. Alt. 100 ft. Coronation Island. South Orkney Islands

Wet tussocky areas, in pools, Alt. 30 ft. Near School, Darwin, East Falkland Islands. Falkland Islands

On side of grass tussock, damp area, Alt. 50 ft. Track 3 miles to north of Camilla Creek, East Falkland Islands. Falkland Islands

Hansen Point near Leith. South Georgia

In wet hollow, Alt. 30 ft. Slope behind the base, Factory Cove, Signy Island. South Orkney Islands

On roots of trees in steep NW facing woodland, Alt. 250 m. SW of Seno Ponsonby, Isla Hoste. South America, Chile

Tierra del Fuego australis, Ushualis, Montes Martiales, cuesta pantanosa, 350 m.s.m., esparcidamente. South America, Argentina

Rocks in dyke to W of Beach Point, Southern Thule. South Sandwich Islands

Vertical rock face. Alt. 75 m. Harrow Peaks, Victoria Land. Antarctica, Ross Sector

Dry schist boulders. Alt. 80-100 m. Kay Island (Island has large colony of snow petrels and many skuas and Wilson's petrels breeding), Victoria Land. Antarctica, Ross Sector

Rock face, N-facing. Alt. 100 m. Crater Cirque, Victoria Land. Antarctica, Ross Sector

On sandy soil (decomposed porphyry rock) on a 30 degree slope facing E, Alt.2240m. Compton Valley, Thiel Mountains, Ellsworth Land. Antarctica, Byrd Sector

On dry north-facing cliff, Alt. 70 ft. East side of hill between Factory Cove and Paal Harbour, Signy Island. South Orkney Islands

On dry cliff face below cape pigeon nests, Alt. 100 ft. East side of hill between Factory Cove and Paal Harbour, Signy Island. South Orkney Islands

On fragments of quartz-mica-schist, Alt. 30 ft. North side of Berntsen Point, Borge Bay, Signy Island. South Orkney Islands

On rock face with some soil, Alt. 25 ft. North side of Berntsen Point, Signy Island. South Orkney Islands

On upper and dry surface of stones and rocks, Alt. 135 ft. flat area on south side of Lake Boeckella, between lake and bottom of permanent snow and ice at foot of hill 433, Hope Bay. Antarctic Peninsula, Trinity Peninsula, East Coast

On all upper surfaces of dry rocks or stones if above general 'washed' level, Alt. 135 ft. flat area in south side of Lake Boeckella, and ice at foot of hill 433, Hope Bay. Antarctic Peninsula, Trinity Peninsula, East Coast

Upper surface of dry rocks, usually along fine cracks or lines of weakness, Alt. c. 1,400 ft. Small outcrop on south side of Sjogren Glacier. Antarctic Peninsula, Trinity Peninsula, East Coast

On west facing rock outcrop, Alt. 25 m. Spit Point, Yankee Harbour, Greenwich Island. South Shetland Islands

North-facing slopes of ridge, Hope Bay, north-east shore of Trinity Peninsula. Antarctic Peninsula, Trinity Peninsula, East Coast

Frequent on rock faces where melt water trickles down. Alt. 10-25 m. Rothera Point, Adelaide Island. Antarctic Peninsula

On Outlooker Mountain, S Morozumi Range, N Victoria Land. Antarctica, Ross Sector

In cracks and in very large patches (up tp 0.5 m across) on open boulders. Central W-facing part of Kay Island. Antarctica, Ross Sector

Sccattered across the scoria. Alt. 200 m. Cape Phillips. Antarctica, Ross Sector

On erratics on glacier ice. Alt. 35 m. Upper end of Orwell Glacier moraine, Signy Island South Orkney Islands

Rock. Alt. 15-100 ft. Near base hut, Adelaide Island, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

On rock between Xanthoria elegans, on N-side of the hill. Alt. 15-20 m. Highest hill near the coast, NW part of Cuverville Island. Antarctic Peninsula, Danco Coast

Stones at base of outcrop. Alt. 25m. Harmony Cove, Nelson Island. South Shetland Islands

On dry nitrogenous S-facing outcrop. Alt. 3m. Low promontory just S of Leith whaling station, Stromness Bay. South Georgia

Rocks. Alt. 600ft. Ridge S of Neptunes Bellows, Deception Island. South Shetland Islands

N side of rocks especially in crevices, Alt. 50 m. Metchnikoff Point, Brabant Island. Antarctic Peninsula

On bird-perching basalt rock faces. Alt. 15 m. Emerald Point, Cardozo Cove, Ezcurra Inlet, Admiralty Bay, King George Island. South Shetland Islands

Dry rock in wet crevices associated with dead moss, Alt. 80 m. West facing, 30 m from large melt pool, Petermann Island. Antarctic Peninsula

In wet rock crevices facing north-east, Alt. 10 ft. Tern Cove, Signy Island. South Orkney Islands

Moist gravelly slopes and plateau. Abundant. Alt. 80m. S Monroe Island. South Orkney Islands

Rocks near shore. Alt. 3-10 m. North side of Leonie Island. Antarctic Peninsula

Sweeney Mountains, Ellsworth Land Antarctic Peninsula