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On stony slope, Alt. 50-250 ft. Promontory on SW coast to west of John Peaks, Powell Island. South Orkney Islands

Rocks and boulders, Alt. 250 ft. Slope behind the base, Factory Cove, Signy Island. South Orkney Islands

On and amongst rocks in stone stripe, Alt. c. 100 ft. Slope behind BAS station, eastern shore of Factory Cove, Signy Island. South Orkney Islands

On loose small stones and in small cracks and ledges, Alt. 4800 ft. Rounded crest of ridge running north from summit at west of Giannini Peak. Antarctic Peninsula

On moribund moss. Alt. 100-125 m. Cape King, Victoria Land. Antarctica, Ross Sector

On moribund moss (Tortula princeps). Alt. 100-125 m. Cape King, Victoria Land. Antarctica, Ross Sector

Rocks in waterfall issuing from lake. Alt. 100 m. Crater Cirque, Victoria Land. Antarctica, Ross Sector

On decaying tussock stump on dry, north-facing cliff, Alt. 10 m. Cliff at south end of Binder Beach, Right Whale Bay. South Georgia

On rock comprising of granodiorite, breccia & gneiss. Alt. 2098 m. Avery Plateau Antarctic Peninsula

Near snow line. Alt. 1779 m. Sweeney Mts., Ellsworth Land. Antarctica, Scotia Sector

On grey sandstone with some iron staining, on 30 degree slope facing SE increvice, Alt. 2040m. Central Nash Hills, Ellsworth Land. Antarctica, Scotia Sector

On sandstone on SE facing slope on outcrop to S of sample 5518, Alt. 1890m. Central Nash Hills, Ellsworth Land. Antarctica, Scotia Sector

In rock cracks, top peak, Mt. Rex, Ellsworth Land. Antarctica, Scotia Sector

Growing over tops of Bryum algens in wet situations after melt. Falla Bluff, MacRobertson Land. Antarctica, Enderby Sector

In a light coloured dyke, facing-east, seated under the level of the rocks, Alt. 4600 ft. on spur, south side of Dana Glacier. Antarctic Peninsula

On loose stones on north side of ridge running NE to SW, Alt. 4375 ft. Major ridge running from 2300ft. to 4400ft. north Engle Peaks. Antarctic Peninsula

Loose rock in lee of boulder with thallus penetrating most cracks. Inexpressible Island. Antarctica, Ross Sector

N end of Kay Island. Antarctica, Ross Sector

On darker boulders. Alt. 200 m. Cape Phillips. Antarctica, Ross Sector

Moist gravelly slopes and plateau. Abundant. Alt. 30-70m. S Monroe Island. South Orkney Islands

On Schistidium sp. Alt. c. 30m. SSSI area, Bailey Peninsula. Budd Coast. Antarctica, Wilkes Sector

On gravelly soil with Xanthoria mawsonii. On black gneiss knoll. SE of New Casey Station, Bailey Peninsula. Budd Coast. Antarctica, Wilkes Sector

Dry rock surfaces. Cream. Alt. 10-30 m. Roman Four Promontory. Antarctic Peninsula

Dry rocks. Yellowish. Alt. 5-25m. Line Islands, N Marguerite Bay Antarctic Peninsula

Exposed, dry, top surfaces of cleaner boulders, Alt. c. 886 ft. Nobby Nunatak. south side of Hope Bay. Antarctic Peninsula, Trinity Peninsula, East Coast

Dry and exposed surface of embedded rock, Alt. 118 ft. near the balloon hut, south shore of Hut Cove, Hope Bay, Trinity Peninsula, East coast. Antarctic Peninsula

Exposed moraines, Alt. 500 ft. East of Port Jebsen, Signy Island. South Orkney Islands

Exposed moraine rocks, Alt. 40 ft. Moraine Valley, Signy Island. South Orkney Islands

Shelterd rock ledge on outcrop, facing north, Alt. 30 ft. Tern Cove, Signy Island. South Orkney Islands

Exposed west facing scree, Alt. 700 ft. Rock buttress at SE side of Sunshine Glacier, Coronation Island. South Orkney Islands

With Andreaea on scree soil amongst rocks, Alt. 750 ft. West side Wave Peak Buttress, Coronation Island. South Orkney Islands

On rocks, Alt. 200 ft. Porteous Point, Signy Island. South Orkney Islands

North side of boulder, Alt. 200 ft. Cummings Cove, Signy Island. South Orkney Islands

Dry loose stone and bedrock, Alt. c. 2800 ft. small nunatak 3 miles west of Tower Peak, between Sjogren Glacier and Larsen Inlet, Trinity Peninsula. Antarctic Peninsula, Nordenskjold Coast

On pebbles of raised beach. Alt. 3m. North side of Barton Peninsula, King George Island. South Shetland Islands

Pebbles and larger stones in gravel beds. Alt. 20m. Whitney Point, Clark Peninsula. Budd Coast. Antarctica, Wilkes Sector

Fine sandy soil amongst pebbles. Ridge to S of New Casey Station, Bailey Peninsula. Budd Coast. Antarctica, Wilkes Sector

On stones in stream in penguin rookery, Alt. 30 m. North-east shore of Doubtful Bay. South Georgia

On flat boulders on E facing slope. Alt. 400 ft. Towards centre of E side of Vindication Island. South Sandwich Islands

On low friable basalt outcrop on beach about 10 m. from sea. Alt. 6m. S end of South Beaches, Byers Peninsula, Livingston Island. South Shetland Islands

On quartz-mica schist boulder. Alt. 70ft. Adjacent to field hut, Gourlay Peninsula, Signy Island. South Orkney Islands

On dry, vertical cliff face. Alt. 120ft. N side of hill between Factory Cove and Paal Harbour, Signy Island. South Orkney Islands

On horizontal rock surfaces near bird perches. Alt. 30 ft. Outer Island, Borge Bay, Signy Island. South Orkney Islands

Rock. Alt. 30-150m. Between Adelie colony and foot of cliff, Cockburn Island. Antarctic Peninsula

Nitrogenous cliffs and rocks below Petrel nests by sea. Alt. 6 ft. Knife Point, Signy Island. South Orkney Islands

North west facing rock ledges below petrel nests, Alt. 50 ft. SE of Factory Cove, Signy Island. Hooker, T.N. South Orkney Islands

Exposed rock, Alt. 80 ft. South side of promontory opposite Lynch Island, Coronation Island. South Orkney Islands

On sea stack on wave-cut platform at sea level. Alt. 2 m. Midway between Calf Head and Cape Harcourt, Sacramento Bight. South Georgia

Shallow, gravel-filled depressions. On rock surfaces. Top of Kemp Peak, Stillwell Hills, Kemp Land. Antarctica, Enderby Sector

Sandy soil and dead moss. Alt. 90-100m. Haupt Nunataks. Budd Coast. Antarctica, Wilkes Sector