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Wet habitat, in fine gravelly soil. Alt. 315 m. Middle Flatiron Valley, Alexander Island. Antarctic Peninsula, Alexander Island

Horrocks Block. Antarctic Peninsula

On marble. Alt. 15 m. Marble Knolls, Signy Island. South Orkney Islands

Over soil in rock crevices, Alt. 580 ft. Near summit of Mount Longdon, near Port Stanley, East Falkland Islands. Falkland Islands

On permanently drenched rock outcrop, Alt. 220 m. Rock outcrop below Grotte du Geographe, northern slopes of Riviere du Camp Valley, Possession Island. Crozet

On wet peaty banks by shore, Alt. c 5 ft. South-west shore of King Edward Cove, Cumberland East Bay. South Georgia

By Shackleton's Cross, Hope Point. South Georgia

NE slopes of Brown Mountain. South Georgia

By small lake, SE from Kelp Point, Busen Peninsula. South Georgia

West side of Carlita Bay. South Georgia

Rock surfaces, Alt. 120 ft. Rock outcrop behind beach of Moraine Fjord, Dartmouth Point, Cumberland East Bay. South Georgia

On rocks, Alt. 100 ft. Point at NW entrance of Sea Leopard Fjord. South Georgia

Moist soil in stone melt runnel. Alt. 75 m. Mars Oasis, upper moraine north, Alexander Island. Antarctic Peninsula, Alexander Island

Soil amongst stones on summit plateau. Alt. 600 m. Natal Ridge, east end, Alexander Island. Antarctic Peninsula, Alexander Island

Blodwyn, below summit to the east. Alt. 200 ft. Fossil Bluff, Alexander Island. Antarctic Peninsula, Alexander Island

On rock. Gondwana Base area, Victoria Land. Antarctica, Ross Sector

Damp rock face. As 10830 (0n loan to Ovstedal.) Signy Island. South Orkney Islands

On sheltered rock-faces facing south-west, skuas 10m., Alt. 25 m. Island south of Metchnikoff Point, Brabant Island. Antarctic Peninsula

On shelterd south face of boulder on shore, Alt. 3 m. South end of Binder Beach, Right Whale Bay. South Georgia

In nitrogenous melt trickle, Alt. 7 ft. Berntsen Point, Borge Bay, Signy Island. South Orkney Islands

Intertidal stones. Alt. -50 cm - 0 m. Mare Harbour. Falkland Islands

Top of terrapin, among rocks, level to south-facing, Alt. c. 900 m. Ablation Point, Alexander Island, George VI Sound. Antarctic Peninsula, Alexander Island

On old (50 cm diam.), 15 m high Northofagus antarctica tree, Alt. 500 m. Side of road leading to ski resort, Cerro Mirador, near Punta Arenas, Magellanes. South America, Chile

On vertical rock facing east. Alt. 10 m. East coast, south of the cave, Prince Edward Island. Prince Edward Islands

South Point. Alt. 155 m. Deception Island. South Shetland Islands

Ridge 900 m north of South East Point. Alt. 215 m. Deception Island. South Shetland Islands

Steep mud/ash and rock slope. Alt. 30 m. 2 km south of Baily Head, Deception Island. South Shetland Islands

On Empetrum twigs on hillside above rockhopper penguin and black-browed albatross colony . Alt. 100 m. East of The Neck, Saunders Island. Falkland Islands

On exposed quartz-mica-schist, Alt. 350 ft. Summit of Observation Bluff, Signy Island. South Orkney Islands

On steep Chorisodontium aciphyllum bank facing N. Alt. 100m. S of Cummings Cove, Signy Island. South Orkney Islands

Often covering an area of up to 1m x 0.5m, growing on moss and rock. Lichens on the scoria boulder surfaces. Mosses in the crevices. Alt. 200m. Steep lava slope to the N of the small lake to the NE of Mt Kirkwood. Deception Island. South Shetland Islands

Near skua's nest on surface of lava, SW slopes of ash cone, N of Sea Serpent Cove, Candlemas Island. South Sandwich Islands

East-facing rock and scree, 25 degree slope, Alt. 14 m. Eadie Island. South Shetland Islands

On scree facing west, Alt. 40 m. Spit Point, Yankee Harbour, Greenwich Island. South Shetland Islands

On rocks above fumarole vent and in contact with steam, Alt. 200-300 ft. Between lagoons and most southerly exposed lava ridge, Candlemas Island. South Sandwich Islands

On north-facing exposed rock outcrops, Alt. 150-180 m. Near north-east coast,. O'Brien Island. South Shetland Islands

At depth of 4 m. Sombre Lake, Signy Island. South Orkney Islands

In crevices of east-facing rock, Alt. c. 5 ft. Shore at Pirner Point, Royal Bay. South Georgia

On vertical rock face below penguin rookery, Alt. 8 ft. Shagnasty Island, Signy Island. South Orkney Islands

On cliff face just above high water mark, Alt. 4 ft. Pageant Point, Gourlay Peninsula, Signy Island. South Orkney Islands

On north-east facing cliff, Alt. 10 ft. Tern Cove, Signy Island. South Orkney Islands

From rocks and crevices below Cape Pigeon colony. Braces Point, Vindication Island. South Sandwich Islands

Dry rock crevices and faces, Alt. 20-60 m. Northeast to northwest slope, Green Island, Berthelot Islands, Graham Coast. Antarctic Peninsula, Graham Coast

With Caloplaca + Xanthoria on rock. Very rare. Alt. 100m. Between Adelie colony and foot of cliff, Cockburn Island. Antarctic Peninsula

Showing preference for shade on rock surface, Alt. 5-6 m. Peninsula north of Depeaux Point, Petermann Island, Graham Coast. Antarctic Peninsula, Graham Coast

Steep mud slope. Alt. 30 m. 1 km south of Baily Head, Deception Island. South Shetland Islands

In crack on N facing granite rib, Alt. 800ft. Ridge to W of Pillsbury Tower, Jones mts, Eights Coast. Antarctica, Byrd Sector

Moist scoria and ash, warm. Alt. 430 m. N ridge of Mt Pond. Deception Island. South Shetland Islands

On upper surface of rocks above level of melt-water, Alt. 240 ft. above small penguin rookery on slope at western end of Lake Boeckella, Trinity Peninsula. Antarctic Peninsula, Trinity Peninsula, East Coast

On whale vertebra, Alt. 25 ft. Berntsen Point, Borge Bay, Signy Island. South Orkney Islands