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On bare soil and gravel, occasionally on rock, Alt. c. 50 ft. East side of Michelsen Island, Powell Island. South Orkney Islands

Mixed carpet around gravel and stones, Alt. c. 100 ft. Bank behind base hut, eastern shore of Factory Cove, Signy Island. South Orkney Islands

Mixed mat on stony ground, Alt. c. 200 ft. Above North Point, north end of Signy Island. South Orkney Islands

On dry to damp surfaces and crevices of rock outcrops. Cape Primavera. Antarctic Peninsula, Danco Coast

Crack running down north of ridge in north-east direction, Alt. 4200 ft. Major ridge running from 2300ft. to 4400ft. north Engle Peaks. Antarctic Peninsula

Wet rocks, Alt. 15 ft. Stream from Gull Lake, Cumberland East Bay. South Georgia

Wet rocks, Alt. 200 ft. Valley running NW from Leith, Stromness Bay. South Georgia

Wet rocks, Alt. c. 500 ft. Cliffs above King Edward Point, Cumberland East Bay. South Georgia

On rock, Alt. 200 ft. North-facing scree slope on south side of valley, behind Rosita Harbour. South Georgia

Fuegia occidentalis, Monte Buckland, ad rupes humides, 600 m.s.m. South America

500 m west of Mt. Elder. Macquarie Island

On loamy soil in a vegetation of Azorella selago and Jamesoniella grandiflora on a fairly wet and exposed site. Alt. 270 m. Tafelberg. Prince Edward Islands

On places with an accumulation of soil material in an open Azorella fjaeldmark vegetation on an exposed, dry scoriae slope. Alt. 280 m. Junior's Kop. Prince Edward Islands

On soil among rocks at summit ridge. Alt. c. 1800 ft. Masatierra, upper, west facing slope of Cordon Salsipuedes. Juan Fernandez

Soil covered ledge above stream. Masafuera, Quebrada Casas. Juan Fernandez

Moist rock crevice, Alt. 300 ft. Rocks behind Grytviken whaling station, Cumberland East Bay. South Georgia

On rock. Alt. 8m. Spit on SE side of St Martha Cove, James Ross Island. Antarctic Peninsula

On quartz boulders. Alt. 70 m. North side of Observation Bluff, Signy Island. South Orkney Islands

Crevices in sea rocks, Alt. c. 20 ft. north of Thulla Point, Signy Island. South Orkney Islands

Wet area on wave-cut platform, Alt. 35 ft. South side of Berntsen Point, Borge Bay, Signy Island. South Orkney Islands

Dry rock face and overhang cliff by shore, Alt. 15 ft. North of lower end of Sorling Valley, Barff Peninsula. South Georgia

On small stone in damp earthy flat area between boulders, Alt. 260 ft. between Scar Hills South and Mount Flora, Hope Bay. Antarctic Peninsula, Trinity Peninsula, East Coast

On pebbles in shallow nitrogenous streams from penguin rookery, Alt. 15 ft. Gourlay Peninsula, Signy Island. South Orkney Islands

Mud/guano near Chinstrap colony. Alt. 30-40 m. Vapour Col, Deception Island. South Shetland Islands

Algae growing as small clumps beneath stones on gravel substrata. Stillwell Hills, Kemp Land. Antarctica, Enderby Sector

Gravel shoreline on south-west shore of Stillwell Lake. Alt. 2 m. Stillwell Hills, Kemp Land. Antarctica, Enderby Sector

Lake 2, silty bottom, no fauna, prone to drying out. Algal mat. Alt. 260 m. Rabot Point, James Ross Island. Antarctic Peninsula, Trinity Peninsula, East Coast

Clear water flowing over volcanic pebbles. Alt. 60 m. North facing stream, Hamilton Point, James Ross Island. Antarctic Peninsula, Trinity Peninsula, East Coast

Mineral soil at stream margin near penguin colony. Edmonson Point, Victoria Land Antarctica, Ross Sector

Between moss patches on stream beds and edges. Alt. 10m. 1km. E of Cape Obelisk, James Ross Island, Trinity Peninsula. Antarctic Peninsula

Between moss and stream. Alt. 10m. 1km. E of Cape Obelisk, James Ross Island, Trinity Peninsula. Antarctic Peninsula

East-facing rocks, "Rock Bay", Alt. 30 ft. Adelaide Island. Antarctic Peninsula

Sheltered area in gully free from snow, Alt. 10 ft. West side of dividing gully, Corner Islands, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

On basaltic lava (basic to intermediate) at top of sea cliffs, NE side of Zavadovski Island. South Sandwich Islands

On large shingle, growing over lichens, Alt. 25 ft. Shingle bank between eastern lagoon and sea, Candlemas Island. South Sandwich Islands

Dry condition on a no longer inundated ground, Alt. c. 140 ft. near south-east shore of Lake Boeckella, Hope Bay. Antarctic Peninsula, Trinity Peninsula, East Coast

Top of small rock, at base of high vertical cliff, Alt. 15-20 ft. Cape Kater. Antarctic Peninsula, Palmer Coast

Stream bed - giving it a reddish hue. Alt. 100m. 1 km E of Katick Point, Holluschickie Bay, James Ross Island. Antarctic Peninsula

On bare mud in Deschampsia sward, Alt. c. 5 ft. By hut, shore Freshwater Inlet, Jordan Cove, Bird Island. South Georgia

In damp cavities on tops of recently exposed north facing rocks, Alt. c. 200 ft. Neptunes Window, Cathedral Crags, Deception Island. South Shetland Islands

On steep rock face receiving continuous supply of moisture from melting snow above, Site of old penguin rookery, Bailey Head, Deception Island. South Shetland Islands

On submerged rocks in intertidal pool, Barnard Point, Livingston Island. South Shetland Islands

Covered in open water formed by fumaroles, fast ice in Port Foster, Shore opposite Lake Lalo, Deception Island. South Shetland Islands

In fast flowing stream over sedimentary rock moraine below outwash fan associated with small glacier. Alt. ca. 200 ft. Unnamed glacier, George VI Sound area. Antarctic Peninsula

Stones in melt stream below late snow bed. Alt. 250 m. Pass between Husdal and Gulbrandson Lake. South Georgia

Old base area, Hewison Point, Southern Thule. South Sandwich Islands

Amongst heath above shore. Hooker's Point, E. of Port Stanley. Falkland Islands

Amongst tussock, beside track near Discovery House. South Georgia

In shallow cracks and crevices on the flattish ridge, Alt. 660 ft. Northern tip of the ridge descending from spot 835. West of Hope Bay. Antarctic Peninsula

Encrusting summit rocks. Alt. 1550 ft. Mt. Duse, east of Grytviken, Cumberland East Bay. South Georgia