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Steep but broken rib, north-facing dry, exposed and unshaded, 30 yards from sea, Alt. c. 40 ft. Main island of small group off north coast of Joinville Island, Trinity Peninsula. Antarctic Peninsula, Trinity Peninsula, East Coast

On loose rocks below summit boulders, Alt. c. 3,000 ft. Nunatak 4 miles north-west of head of Larsen Inlet, Nordenskjold Coast. Antarctic Peninsula, Nordenskjold Coast

On slab of marble, Alt. 8 m. Between graves and Cemetary Flats shore, Signy Island. South Orkney Islands

On concrete, Alt. 35m. Whalers' dam in Bore Valley, Grytviken, King Edward Cove. South Georgia

On Quartz-mica-schist outcrop used as bird perch, Alt. 25 m. West of Mooring Point, Signy Island. South Orkney Islands

On moss, Alt. 350-500 m. Reptile ridge, running northwards from Rothera Point, Adelaide Island, Loubet Coast. Antarctic Peninsula, Loubet Coast

On Tortula sp. Alt. ca. 10 m. South end of promontory, Norsel Point, Anvers Island, Danco Coast. Antarctic Peninsula, Danco Coast

On Andreaea sp. Alt. 20 m. North side of hill, Litchfield Island, Arthur Harbour, Anvers Island, Danco Coast. Antarctic Peninsula, Danco Coast

On stones and soil below marble outcrop, Alt. c. 100 ft. south-east of central lake in Three Lakes Valley, Signy Island. South Orkney Islands

Rocks in association with Dominican Gull nests, Lower moraine of Mount Pond glacier, Deception Island. South Shetland Islands

Boulders at top of beach, Alt. 5 m. Beach west of Horsburgh Point, Montagu Island. South Sandwich Islands

On enriched andesite boulders near the nests of birds. Emerald Point, Cardozo Cove, Ezcurra Inlet, Admiralty Bay, King George Island. South Shetland Islands

On accumulations of limpet shells around gulls nests, Alt. 20-60 m. N side of largest one of easternmost of Joubin Islands, c. 16 Km west of Arthur Harbour, Anvers Island, Danco Coast. Antarctic Peninsula, Danco Coast

On concrete of whalers dam, Alt. 90 ft. East side of hill between Factory Cove and Paal Harbour, Signy Island. South Orkney Islands

In splash zone, Alt. 8 ft. West side of Berntsen Point, Borge Bay, Signy Island. South Orkney Islands

On cement base of anemometer tower, Alt. 120 ft. Berntsen Point, Borge Bay, Signy Island. South Orkney Islands

On rocks near giant petrel nests, Alt. 100 m. Bay to west of Cape Charlotte, Royal Bay. South Georgia

On north-facing cliff on shore, Alt. 2 m. Small bay to SE of Husvik, Stromness Bay. South Georgia

On rock fragments, Alt. 25 m. North of Strachan Hill, Nelson Island. South Shetland Islands

On rock, Alt. 50 m. North of Port Jebsen, Signy Island. South Orkney Islands

On rocks and soil influenced by birds. Alt. 2-15m. Humps Island, off NE James Ross Island Antarctic Peninsula

On dry Schistidium antarcticum. Alt. 35m. In valley S of St Martha Cove, James Ross Island. Antarctic Peninsula

On mummified crabeater seal skin with Physcia caesia. Alt. 165m. San Jose Pass, James Ross Island. Antarctic Peninsula

On moss in crevices of wet E facing scree slope. Alt. 905 m. Point 905, James Ross Ice Cap. James Ross Island, Trinity Peninsula. Antarctic Peninsula

Growing on moss, west-facing shady gully, Alt. 750 m. Lully Foothills, Alexander Island. Antarctic Peninsula, Alexander Island

On soil. Above SE Point. Alt. 50-200m. E of whaling station, Whalers Bay, Deception Island. South Shetland Islands

On dead moss and Pannaria Hookeri. Alt. 35m. Below cliffs of Snow Hills, Limestone Valley, Signy Island. South Orkney Islands

On moss and soil, Alt. 25-50 m. On slopes of Mount Flora, Hope Bay. Antarctic Peninsula

On isolated piece of marble amongst native quartz-mica-schist. Alt. 10 m. Mooring Point area, Signy Island. South Orkney Islands

At base of Usnea holdfasts. Dry rocks and stones. Alt. 5-25m. NW side, Pinero Island. Antarctic Peninsula

On dry soil in sorted circles. Alt. 165m. Col, Lagotellerie Island. Antarctic Peninsula

On stone. Moist scoria and ash. Warm. Alt. 380 m. N ridge of Mt Pond. Deception Island. South Shetland Islands

On moss. Rock exposure below high ice cliffs. Alt. 100 m. Garnet Hill, Moraine Valley, Signy Island. South Orkney Islands

On Schistidium antarctici on moist rock face. Alt. 50 m. Cliffs above Cemetery Bay, Signy Island. South Orkney Islands

Steep scoria. Dry. Alt. 300m. Ridge above Vapour Col. Deception Island. South Shetland Islands

Dry rocks used as bird perches, Alt. 5-20 m. Island in north-west of Faure Island group, Fallieres Island. Antarctic Peninsula, Fallieres Coast

Rocks used as bird perches, Alt. 5-25 m. Island to west of Dismal Island, Faure Islands, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

On limpet shells, Alt. 5-25 m. Island to west of Dismal Island, Faure Islands, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

Small pebbles, Alt. 35-50 m. Emperor Island, Dion Islands, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

On dry rock face. Alt. 20 m. Ronald Hill crater, Deception Island. South Shetland Islands

On Leptogium puberulum on dry rocks. Alt. 150m. Fortress Hill, James Ross Island. Antarctic Peninsula

On mummified crabeater seal skin. Alt. 165m. San Jose Pass, James Ross Island. Antarctic Peninsula

On moss (Sarconeurum glaciace) at base of boulder. Alt. 650 m. Ridge above Tinker and Burns Glaciers, Victoria Land. Antarctica, Ross Sector

Camp. Alt. 1162 m. Bean Peaks, Hauberg Mts, Ellsworth Land. Antarctica, Scotia Sector

On sandy soil in rock crevice on a ledge, Alt. 2030m. South Hamilton Cliffs, Thiel Mountains, Ellsworth Land. Antarctica, Byrd Sector

On moist moss. Alt. 10-20 m. North side of Leonie Island. Antarctic Peninsula

On dead moss (Tortula princeps and Bryum argenteum), moist soil below late snow beds. Alt. 25 m. Apostrophe Island, Victoria Land. Antarctica, Ross Sector

On dead moss and sandy soil amongst granite boulders. Alt. 150 m. Boulder field near main lake, "Gondwana" area, Victoria Land. Antarctica, Ross Sector

Sandy granitic soil. Alt. 150 m. Boulder field near main lake, "Gondwana" area, Victoria Land. Antarctica, Ross Sector

On fine dry soil amongst boulders. Alt. 15 m. North side of large lake ("Penguin Lake"), Edmonson Point, Victoria Land. Antarctica, Ross Sector