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On moss (Schistidium sp.) on tephra rock outcrop. Alt. 10 m. South of Pendulum Cove at NE corner of Crimson Hill, Deception Island. South Shetland Islands

King Edward Point. Alt. 25 m. On rocks in scree. South Georgia

Dry vertical rock face. Alt. 50 m. Paal Harbour, Signy Island. South Orkney Islands

SW Collins Point. Alt.25-35m Deception Island. South Shetland Islands

South-east facing vertical cliff face, Alt. 16 m. Cove, 0.5 km. south of Stinker Point, Elephant Island. South Shetland Islands

Locally common on rock surfaces, Uruguay Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

Margins of stone stripes and sorted circles. Alt. 135 m. North side of Jane Col, Signy Island South Orkney Islands

On moss (Andreaea gainii, Hypnum sp., Schistidium antarcticum) Alt. 150m. Hill top to S side of St. Martha Cove, James Ross Island. Antarctic Peninsula

Dry rock surfaces, Alt. 1800 ft. Pass to north of Echo Pass. South Georgia

Damp rock crevice, Alt. c. 250 ft. Observation Bluff, Signy Island. South Orkney Islands

On Tortula on vertical cliff face, Alt. 150 ft. East side of hill between Factory Cove, Paal Harbour, Signy Island. South Orkney Islands

On north-facing scree slope. Alt. 265 m. Jardine Peak, Ezcurra Inlet, Admiralty Bay, King George Island. South Shetland Islands

On degradated andesite rocks. Alt. 125 m. Siodlo (=saddle) Hill in Baranowski Glacier, Admiralty Bay, King George Island. South Shetland Islands

On ground on rock ledge in Usnea fasciata community on south-facing slope. Alt. 200 m. Brama (=gate) Hill between Baranowski Glacier and Tower Glacier, Admiralty Bay, King George Island. South Shetland Islands

Scoria and volcanic ash on summit. Alt. 1230 m. State President Sivart Peak, Marion Island. Prince Edward Islands

Flat rock on hilltop facing north, Alt. 200 ft. Cummings Cove, Signy Island. South Orkney Islands

On north facing boulders by lake side, Alt. 100 ft. Sombre Lake, Signy Island. South Orkney Islands

Exposed rocky ground, solifluction area, Alt. 250 ft. Observation Bluff, Signy Island. South Orkney Islands

Growing on Andreaea sp. on sheltered rocks, Alt. 40 m. Cape Roux, Brabant Island. Antarctic Peninsula

On Andreaea gainii Alt. c.150m. Summit of hill on S side of St. Martha Cove, James Ross Island. Antarctic Peninsula

Growing over Andreaea depressinervis and stones on ground. Alt. 50 m. Between Knife Point and Moraine Valley, Signy Island. South Orkney Islands

Dry to moist rock face and small ledges; also growing over moss (Grimmia), Alt. 35 m. Cliff to north of Hope Point, below Mount Duse. South Georgia

On gravelly soil and rocks. Very abundant. Alt. 225m. Gneiss Hills (N), Signy Island. South Orkney Islands

On moss, stones, soil. Alt. 225m. Gneiss Hills (S), Signy Island. South Orkney Islands

Wet crevice beneath rock overhang. Alt. 30 m. Polynesia Point, Signy Island South Orkney Islands

On moribund moss and soil. Alt. 195 m. Plateau between Jane Col and Snow Hills, Signy Island South Orkney Islands

Fissures in sandstone rock. Alt. 125 m. Coal Nunatak, Alexander Island. Antarctic Peninsula, Alexander Island

Amongst gravel between outcrop on side of knoll, Alt. 5525 ft. A small knoll of basic gneiss, c. 50 ft. high, to the east of Welch Mountains. Antarctic Peninsula

Clinging to outcrop on a narrow spur facing east, Alt. 4700 ft. Minor spur of Giannini Peaks. Antarctic Peninsula

Dry rock face near shore. Alt. 1.5 m. North side of Tonsberg Peninsula, Stromness Bay. South Georgia

Shaded rock crevices and ledges. Alt. 25 m. Anchorage Island. Antarctic Peninsula

On moist gravelly soil stripes. Alt. 225m. Gneiss Hills (N) Plateau, Signy Island. South Orkney Islands

Fellfield, on gravelly soil on outwash debris. Alt. 5 m. Lower Husdal. South Georgia

On moist flat areas facing west on rocky ridge, Alt. 3300 ft. Ridge running west from summit on east side of Guard Glacier ridge. Antarctic Peninsula

On N facing marble-banded cliff below giant petrel colony. Also overgrowing mosscushions and lichens. Alt. 50m. Bluff to S of North Point, Signy Island. South Orkney Islands

Amongst Tortula and Sarconeurum glaciale on marble-banded, quartz-mica-schist, Alt. c. 175 ft. south of North Point, Signy Island. South Orkney Islands

On wooden deck of the hulk "Louise", King Edward Cove, Cumberland East Bay. South Georgia

West coast of Horseshoe Island. Antarctic Peninsula, Fallieres Coast

On soil over quartz-mica-schist, Alt. 50 ft. Three Lakes Valley, Signy Island. South Orkney Islands

Rock surface, Alt. 300 ft. Outcrop south of Ceritos House, East Falkland Islands. Falkland Islands

On rock near shore. Alt. 15 m. Soft Plume River, Marion Island. Prince Edward Islands

Amongst moss (Andreaea) on moist rock ledge. Alt. 100 m. Upper slopes of Moraine Valley, Signy Island. South Orkney Islands

On rock outcrop on raised beach, Alt. 35 m. Near SE end of Johnsons Dock, Livingston Island. South Shetland Islands

On scree, Alt. 152 m. 2 km. SW of Endurance Glacier, Elephant Island. South Shetland Islands

Found below rock face, mountain slope, Cuverville Island. Antarctic Peninsula, Danco Coast

On rock surfaces and moss, locally abundant, Uruguay Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

North facing boulder, Alt. 50 ft. Cummings Cove, Signy Island. South Orkney Islands

On rocks and boulders, Alt. 20-200 m. West side Cape Hansen, Coronation Island. South Orkney Islands

Exposed rock surfaces, Usnea community, Alt. 100 ft. Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

Dry cliff, Alt. 60 ft. North side of Petermann Island, Graham Coast. Antarctic Peninsula, Graham Coast