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In moist rock crevice amongst Hygroamblystegium, Alt. c. 300 ft. cliffs above Paal Harbour, Signy Island. South Orkney Islands

Dry boulder, Alt. c. 150 ft, slope behind BAS Station, Factory Cove, Signy Island. South Orkney Islands

On rock ledge with moss, Neny Island, near Stonington Island, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

Growing between rocks on soil, sheltered areas of plateau where melt accumulates. Alt. 200 m. South side of Holluschickie Bay, NW James Ross Island, Trinity Peninsula. Antarctic Peninsula

Vertical nitrogenous rock facing north, Alt. 50 ft. Factory Bluffs, Signy Island. South Orkney Islands

Alt. 1350 m. Sweeney Mountains, Ellsworth Land Antarctic Peninsula

On stones and moss (Grimmia donniana). Alt. 80m. Valley on N side of St Martha Cove, James Ross Island. Antarctic Peninsula

On moss (Tortula princeps). Stepping Stone Island, Arthur Harbour, Anvers Island, Graham Land. Antarctic Peninsula, Danco Coast

Local on coastal rocks and occasionally up to 200 yds inland, also over moss on moist rock ledges, Alt. 10-150 ft. Hermit Island, Arthur Harbour, Anvers Island, Danco Coast. Antarctic Peninsula, Danco Coast

Boulders by river. Alt. 10 m. Macaroni Bay, Marion Island. Prince Edward Islands

On rock ledge, Alt. c. 30 ft. most southerly of Thule Islands, Borge Bay, Signy Island. South Orkney Islands

On soil and mosses between Deschampsia antarctica and under rock with Xanthoria elegans, near penguin colonies with a lot of guano. Alt. 10 m. On NW part of Cuverville Island. Antarctic Peninsula, Danco Coast

On rock. Alt. 15-20 m. Hill near the coast, NW part of Cuverville Island. Antarctic Peninsula, Danco Coast

On soil and moss, moist soil below late snow beds. Alt. 25 m. Apostrophe Island, Victoria Land. Antarctica, Ross Sector

On Schistidium antarctici and rocks, Alt. 8-30 m. Fumerole Bay, Deception Island. South Shetland Islands

On timbers of jetty, Alt. 2-5 m. North side of Whaling Station, Prince Olaf Harbour. South Georgia

On very large erratic boulder, used as gull perch, Alt. 10 m. At north end of Zenker Ridge, Cumberland East Bay. South Georgia

On enriched rocks by nests of Macronectes giganteus. Alt. 80 m. Vaureal Peak, Admiralty Bay, King George Island. South Shetland Islands

Sloping ledge facing north-east,dried circular shaped edges, Alt. 3275 ft. Ridge starting at 2000ft rising to 4500ft, Southern of Engle Peaks main east ridges. Antarctic Peninsula

On moss (Schistidium antarctici) in sheltered rock depressions. Alt. 15m. Whitney Point, Clark Peninsula. Budd Coast. Antarctica, Wilkes Sector

Moist rock ledge, on Schistidium antarctici. Alt. 20m. Hill to E of Wilkes Station, Clark Peninsula. Budd Coast. Antarctica, Wilkes Sector

In crevices on large boulder used as Skua perch. Alt. c. 30m. To S of SSSI area, Bailey Peninsula. Budd Coast. Antarctica, Wilkes Sector

On moss and soil near skua's nest. Alt. 150m. Fortress Hill Plateau, James Ross Island. Antarctic Peninsula

On scree boulders and stones. Scarce. Alt. 15-150m. N side of island above Adelie colony, Cockburn Island. Antarctic Peninsula

Dry amphibolite rock. Alt. 50 m. North side of Observation Bluff, Signy Island South Orkney Islands

On Grimmia spp (cf. antarctici and cf. donniana), On north-facing side of very large erratic boulder, with tussock grass on top, frequented as a gull perch, Alt. c. 8 m. Towards N end of Zenker Ridge, Cumberland East Bay. South Georgia

Very local on mosses such as Drepanocladus uncinatus, Avian Island, Henkes Islands, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

On bird-perching rock by shore, Alt. 3 m. South shore of Larsen Harbour. South Georgia

Growing over gravels under sheltered overhangs, on rock platforms near East Bay, Mawson Rock, MacRobertson Land. Antarctica, Enderby Sector

On soil and Drepanocladus uncinatus in rock crevice, Alt. 5-20 m. Rasmussen Island, near Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

Ledge in valley near melt streams. Alt.183.5 m. Upper Moutonnee Valley. Antarctic Peninsula, Alexander Island

On moss in moist stony depression. Alt. 8 m. Edmonson Point North, Victoria Land. Antarctica, Ross Sector

Dry rock faces. Alt. 5-25 m. North side of Leonie Island. Antarctic Peninsula

On moribund moss (Tortula princeps) and gravelly soil. Alt. 85 m. Harrow Peaks, Victoria Land. Antarctica, Ross Sector

On dry moss (Tortula princeps). Alt. 85 m. Harrow Peaks, Victoria Land. Antarctica, Ross Sector

On moss (Sarconeurum glaciale) in granite crevice on edge of late snow bed. 300-500 m further up moraine than RILS 9654. Upper moraine of Tinker Glacier-Burns Glacier, Victoria Land. Antarctica, Ross Sector

On moss and soil. Grey. Alt. 10-20 m. Midway along N side of Camp point on truncated terrace, Marguerite Bay. Antarctic Peninsula

On Distichium capillaceum on marble. Alt. 15m. Marble Knolls, Signy Island. South Orkney Islands

Mossy rock ledges facing NW, Alt. 50 ft. Knife Point, Signy Island. South Orkney Islands

With Tortula cf. grossiretis on stoney soil, Alt. 15 m. East end of Lynch Island. South Orkney Islands

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

Shaded moss crevice. Alt. 100 m. Above Factory Cove, Signy Island South Orkney Islands

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

In crevice on side of rock, Alt. 152 m. 2 Km. south-west of Endurance Glacier, Elephant Island. South Shetland Islands

Rock crevice, Alt. 20 ft. Thulla Islands. South Orkney Islands

On bird-perching rock by shore. Alt. 10 m. Emerald Point, Cardozo Cove, Ezcurra Inlet, Admiralty Bay, King George Island. South Shetland Islands

On dry boulder. Alt. 50m. W side of Pastorizo Bay, Vega Island. Antarctic Peninsula

On soil on a broad rock ledge. Alt. 50 m. Cliffs above Cemetery Bay, Signy Island. South Orkney Islands

On Schistidium antarcticum on ledge. Alt. 10-15m. North-west corner of Darboux Island, Argentine Islands, Graham Coast. Antarctic Peninsula

On soil and Sarconeurum glaciale. Alt. 100m. Col at head of valley N of St. Martha Cove, James Ross Island. Antarctic Peninsula