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Rock surface, Alt. 100 ft. Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

Rocks at edge of ice cap, Alt. 25 m. Harmony Cove, Nelson Island. South Shetland Islands

Vertical rock facing south-west, Alt. 17 m. South side of Vietor Rock, Byers Peninsula, Livingston Island. South Shetland Islands

On maritime basalt outcrop, facing north, Alt. 20 m. Spark Point, Discovery Bay, Greenwich Island. South Shetland Islands

On north-face of cliff, Alt. 50 ft. Knife Point, Signy Island. South Orkney Islands

On north sides of large boulder, Alt. 250 ft. East side of hill between Factory Cove and Paal Harbour, Signy Island. South Orkney Islands

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

Dry rock face. Alt. 90 m. Upper slopes of Moraine Valley, Signy Island. South Orkney Islands

Rock faces. Alt. 15 m. Leonie Island. Antarctic Peninsula

Dry sheltered rocks. Alt. 150 m. Kay Island, Victoria Land Antarctica, Ross Sector

Damp rock faces. Alt. 5-30 m. West side of main summit, Lagoon Island. Antarctic Peninsula

Dry rocks near Spanish station, Hurd Peninsula area. South Shetland Islands

On east-facing rocks. Alt. c. 100 ft. Behind beach, between Esmark Glacier and Holmestrand Peninsula. South Georgia

S facing ridge with Usnea sphacelata, Alt. 500 m. E of Flask Glacier, Oscar II Coast. Antarctic Peninsula

Alt. c. 100 ft. North side of King Haakon Bay. South Georgia

Alt. 8 m. Low lying island offshore ESE from Cape Herschel, Davis Coast Antarctic Peninsula, Danco Coast

Alt. 2 m. Low lying island offshore ESE from Cape Herschel, Davis Coast Antarctic Peninsula, Danco Coast

Broken and steep slope with scree, Alt. 400 ft. North slope of Mount Flora. Antarctic Peninsula

On rock. Very rare. Alt. 100m. Between Adelie colony and foot of cliff, Cockburn Island. Antarctic Peninsula

Laguna el Parrillar, Cerros al S.-W., Chile. South America, Chile

Very shaded, damp recess in rock face. Alt. 2000 ft. Little gully above Burntwood. Tristan da Cunha

Deposited from tyre of vehicle brought ashore from ship. Alt. 2m. Casey Station road, Bailey Peninsula. Budd Coast. Antarctica, Wilkes Sector

On gravel in a patch of Deschampsia outside the kitchens. Alt. 15 ft. Grytviken whaling station. South Georgia

On gravel with Deschampsia. Alt. 20 ft. Outside the kitchens at Grytviken. South Georgia

Forming two large clumps on stony ground, Alt. 120 m. Near south-east perimeter of base, Port Alfred Faure, Possession Island. Crozet

Waste ground by steam heated pipes, Alt. c. 20 ft. By storage tanks, Grytviken whaling station, Grytviken area. South Georgia

Waste ground. Alt. 8 m. Near "Bellvue" building, Leith whaling station. South Georgia

On peaty ledges among rocks. Alt. 440 m. Summit ridge, Mount Paris. Campbell Island

Dry rock outcrop. Alt. 80 m. Lynch Island. South Orkney Islands

Dry rock face. Alt. 50 m. Ridge overlooking 'Bradley Bay', Factory Bluffs, Signy Island. South Orkney Islands

Dry rock face. Alt. 125 m. Paal Harbour - Rusty Bluff, Signy Island. South Orkney Islands

Dry rock surfaces with other Umbilicaria spp. Alt. 100 m. W side of Cape Hansen, Coronation Island. South Orkney Islands

Dry rocks with Usnea spp., Alectoria pubescens and crustose spp. Alt. 50-300 m. Cape Tuxen Antarctic Peninsula

With Umbilicaria rufidula and Umbilicaria decussata. Dry rock outcrops. Alt. 50 m. W side of Cape Hansen, Coronation Island. South Orkney Islands

On dry rock slab, abundant over an area of 4 square metres, associated with crustose lichens but no bryophytes, Alt. c. 100 m. South facing hillside above windscoop lake adjacent to Laws Glacier, NW of Cape Hansen, Coronation Island. South Orkney Islands

On dry rocks close to shore. Alt. c. 5-10 m. Rasmussen Island, near Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

Vertical rock surface, Alt. 40 ft. Skua Creek, Skua Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

Rock. Alt. 8m. Galindez Island, Argentine Islands. Antarctic Peninsula, Graham Coast

Dry rocks. Alt. 15-60 m. Green Island, Berthelot Islands. Antarctic Peninsula, Graham Coast

Damp rock face. Alt. 100 m. Upper slopes of Moraine Valley, Signy Island. South Orkney Islands

At base of boulder facing south on hill above Campo Icaro. Alt. c. 50 m. Terra Nova Bay. Antarctica, Ross Sector

S facing gulley just below summit of island. Vegetation Island. Antarctica, Ross Sector

On dark rocks, covering whole boulders in protected sites. W-side of Kay Island. Antarctica, Ross Sector

Common on rocks of patterned ground around small lake above Gondwana station. Gerlache Inlet. Antarctica, Ross Sector

North facing steep slope soaked with melt water, extensive cover of bryophytes, Alt. 50-70 m. South side of Astrolabe Island, east side of bay. Antarctic Peninsula

Dry rock surfaces with Umbilicaria spp, Usnea spp, and Himantormia lugubris, Alt. 5-300 m. West side of Cape Hansen, Coronation Island. South Orkney Islands

On rock, Alt. 183 m. Bluff 3.5 km. east of Muckle Bluff, Elephant Island. South Shetland Islands

Cliff top, north facing, Alt. 50 m. Claude Point, Brabant Island. Antarctic Peninsula

Scree Alt. 25m. Island south of Metchnikoff Point, Brabant Island. Antarctic Peninsula

Dry rocks. Alt. 15-25m. Dismal Island, Faure Islands. Antarctic Peninsula, Fallieres Coast