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On basaltic stones submerged in stream flowing from largest lake in area strongly influenced by skuas. Alt. 5 m. Edmonson Point South (unofficial name - 5 km south of Edmonson Point), Victoria Land. Antarctica, Ross Sector

On moss (Hypnum sp.) on NW facing scree in dry water channel. High Flatiron. Antarctic Peninsula, Alexander Island

Stones in raised beach 300 m north of hut. Alt. 20 m. Blaiklock Island. Antarctic Peninsula, Loubet Coast

Dry rocks, in area of snow petrel colony. Alt. 150-200 m. Harrow Peaks, Victoria Land. Antarctica, Ross Sector

On rock and stones and moss (Sarconuerum glaciale). Alt. 100-125 m. Cape King, Victoria Land. Antarctica, Ross Sector

On braided melt stream at Two-Step North, Alexander Island. Antarctic Peninsula, Alexander Island

On moss in moist flush below springs. Alt. 175 m. Upper moraine area, Mars Oasis, Alexander Island. Antarctic Peninsula, Alexander Island

On and between small scree on north-facing slope, Alt. c. 15 ft. above beach near Scar Hills, south, northern side of Hope Bay. Antarctic Peninsula, Trinity Peninsula, East Coast

All open surfaces of dry rock, Alt. 50 ft. south-east ridge of Alectoria Island, Prince Gustav Channel. Antarctic Peninsula, Trinity Peninsula, East Coast

On upper surface of rocks above the level of melt water, Alt. c. 200 ft. above small penguin rookery, on slope at western end of Lake Boeckella, Trinity Peninsula. Antarctic Peninsula, Trinity Peninsula, East Coast

dry exposed surfaces of rock, Alt. 260 ft. between Scar Hills South and Mount Flora, Hope Bay. Antarctic Peninsula, Trinity Peninsula, East Coast

Close to 05983 but out of gully on dry rock wall, Alt. 600 m. 1 km N of Flask Glacier, Oscar II Coast. Antarctic Peninsula

North and east-facing outcrops at base of ridge, Pyritized diorite rock, Alt. 700 m. Lassus Mountains, Alexander Island. Antarctic Peninsula, Alexander Island

North-facing dry rocks, locally abundant and widespread, Alt. 2000 ft. Ridge running west from Douglas Range into Hampton Glacier, Alexander Island. Antarctic Peninsula, Alexander Island

On a loose scree boulder, west-facing, fairly exposed, Alt. 80 m. NW corner of Millerand Island, Marguerite Bay. Antarctic Peninsula

On west-facing sloping rock, fairly sheltered, but also found in open, on boulders in scree, Alt. 750m. Lully Foothills. Alexander Island. Antarctic Peninsula, Alexander Island

Growing loosely on boulders and on dead moss. Alt. 120m. Between Adelie colony and foot of cliffs, Cockburn Island. Antarctic Peninsula

Mainly on small volcanic stones adjacent to wet areas and on margins of stonepolygons Alt. c.400m. Plateau, Cockburn Island. Antarctic Peninsula

On stones, moss and soil. Alt. c.450m. Summit, Cockburn Island. Antarctic Peninsula

Dry rocks near small snow petrel colony. Vestfield Hills, Taleg Gorge. Ingrid Christensen Coast. Antarctica, Enderby Sector

Rocks and flat stones close to, and especially below, snow petrel and capepetrel nests. Alt. 8-70m. Peterson Island. Budd Coast. Antarctica, Wilkes Sector

Rocks influenced by birds, Alt. 10 m. Courtier Island, Dion Islands, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

On large rock in moraine, used as perch by terns and gulls. Alt. 50 m. Orwell Moraine, Moraine Valley, Signy Island. South Orkney Islands

With Rhizoplaca aspidophora, Rhizoplaca melanophthalma, Xanthoria candelaria and? Buellia sp. On dry rocks. Alt. 100-150 m. NW side, Cape Tuxen. Antarctic Peninsula

On rocks used and bird perches, Alt. 10-25 m. Dismal Island, Faure Islands, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

On a small knoll outcrop facing south, amongst broken stones, Alt. 400 ft. South ridge of Mount Cardinall. Antarctic Peninsula

Dry rock surface, exposed bank west of north-south gully, 150 m from north coast, Alt. 70 m. In cove between main island and western spur, Petermann Island. Antarctic Peninsula

On cliff face, Alt. c. 50 ft. Near the base hut, Blaiklock Island, Loubet Coast. Antarctic Peninsula, Loubet Coast

On marble, Alt. c. 75 ft. Marble knolls, near Waterpipe Beach, Signy Island. South Orkney Islands

On Hygroamblystegium on base rich soil Alt. c. 60 ft. Marble Knolls, Waterpipe Beach, Signy Island. South Orkney Islands

Large rock, Behind engineers hut, Whalers Bay, Deception Island. South Shetland Islands

Extreme east end of South Beaches, Byers Peninsula, Livingston Island. South Shetland Islands

Coastal rocks, Alt. 10 ft. East side of Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

On rock, Goudier Island, Palmer Archipelago. Antarctic Peninsula, Danco Coast

On top of hill near penguin colony. Alt. 20 m. NW part of Cuverville Island. Antarctic Peninsula, Danco Coast

On boulder. Alt. 200 m. North end of Teall Nunatak, Victoria Land. Antarctica, Ross Sector

Rocks, especially influenced by snow petrels. Alt. 100 m. Crater Cirque, Victoria Land. Antarctica, Ross Sector

South-west face of cliff, on moss, Alt. 450-500 m. North of Goldsmith glacier, Theron Mountains, Coats Land. Antarctica, Scotia Sector

Coarse scree. Alt. 50m. NW Persson Island, Prince Gustav Channel. Antarctic Peninsula

Stones and boulders; especially bird perch rocks. Alt. 20-35m . E side Lachman Crags, James Ross Island. Antarctic Peninsula

Bird perch rocks. Alt. 20-30 m. E side Lachman Crags, James Ross Island. Antarctic Peninsula

Rocks used as bird perches. Alt. 5-40 m. Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula

Dry rocks, especially those used as gull perches. Alt. 10-15m. North-west corner of Darboux Island, Argentine Islands, Graham Coast. Antarctic Peninsula

On rock ledge. Alt. 75m. Steepholm Island, Robertson Islands. South Orkney Islands

on slope with N-exposure, Molodeznaja Station, Enderby Land Antarctica, Enderby Sector

On dead Empetrum twigs and Bolax, close to red-backed hawk perch. Alt. 300 m. Summit of Mt Egmont. Falkland Islands

Rock face near cape petrel nest. Alt. 20 m. Factory Bluffs, Signy Island. South Orkney Islands

Rock wall close to penguin colonies. Alt. 20 m. Pageant Point, Gourlay Peninsula, Signy Island. South Orkney Islands

Dry rocks below bird perches, Alt. 5-25 m. Island to west of Dismal Island, Faure Islands, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

On moribund moss on a ledge. Alt. 100-150 m. NW side, Cape Tuxen. Antarctic Peninsula