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Bases of trunks of young Nothofagus betuloides in N. betuloides forest behind shore of Seno. Alt. 10 m. Southern shore of Peninsula de las Montanas, Ancon Sin Salida, Seno Union, Depto. Ultima Esperanza, Prov. Magallanes. South America, Chile

On rock. Alt. 2000 ft. Cliffs on ridge S of northern Lake, Mt. Adam. Falkland Islands

En el borde N. de la gran turbera. Provincia Magallanes, Depto Ultima Esperanza, Margen occidental del Rio Serrano. South America, Chile

Sobre tronco caido en bosque mixto de Nothofagus betuloides. Provincia Magallanes, Depto Ultima Esperanza, Bahia Bellavista, en la ladera SW del Cerro Balmaceda. South America, Chile

Mossy bank, Alt. 20 ft. Bay south of Foca Point, Signy Island. South Orkney Islands

Humus at edge of snow above meltwater area with bryophytes, Alt. 40 ft. Above Stella Creek, Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

In moist rock depression. Alt. 25 m. SE side of main summit, Anchorage Island. Antarctic Peninsula

On soil, on cliffs among Poa flabellata, Alt. 50 ft. SE corner of Ocean Harbour, Barff Peninsula. South Georgia

Dry E-facing scree. Alt. 25 m. Behind Grytviken whaling station. South Georgia

With Pohlia nutans in vegetation around fumarole, Alt. 200-300 ft. Between lagoons and most southerly exposed lava ridge, Candlemas Island. South Sandwich Islands

Dry rock crevice, Alt. 100 ft. Edge Hill, Graham Coast. Antarctic Peninsula, Graham Coast

Moist rock crevice, Alt. 30 m. Riviere du Sud, midway between beach and start of Val Struder Valley. Kerguelen

On moderately sheltered rock ledge, Alt. 200 m. Rock outcrops overlooking Riviere du Camp, north-east of Mt. Branca, Possession Island. Crozet

In moderately exposed rock crevice, Alt. 200 m. Rock outcrops overlooking Riviere du Camp, north-east of Mt. Branca, Possession Island. Crozet

On sheltered east-facing rock outcrops, Alt. 350 m. Just below and east of summit of Mt. Branca, Possession Island. Crozet

On rock in moderately sheltered overhang, Alt. 290 m. La Grotte du Geographe, Possession Island. Crozet

On moderately exposed rock surface, Alt. 200 m. Rock outcrops overlooking Riviere du Camp, north-east of Mt. Branca, Possession Island. Crozet

Dry rock, Alt. 400 ft. East-facing scree slopes, Head of Whale Valley. South Georgia

Moist rock ledge, Alt. 1000 ft. Scree slopes below Pirner Point, on South side of Whale Valley. South Georgia

On dry rocks behind waterfall, Alt. 340 m. Grande Cascade, Possession Island. Crozet

On moderately exposed rock surface, Alt. 240 m. South east slopes of Mont Branca, Possession Island. Crozet

Colonising bare clay in eroded area of Festuca-Acaena grassland, Alt. 25-50 ft. Hestesletten, Cumberland East Bay. South Georgia

Dry rock of large breccia block used as bird perch (mainly terns). Alt. 5m. Centre of valley below glacier NW of Dreadnought Point, James Ross Island. Antarctic Peninsula

Exposed dry rock surface, Alt. 600 ft. West facing rock outcrops and scree on east side of Bore Valley. South Georgia

Dry rock face, Alt. c. 400 ft. Rocks to east of large lake, Maiviken, Cumberland West Bay. South Georgia

In crevices of rock, Alt. c. 250 ft. East-facing slopes of Pirner Point, Royal Bay. South Georgia

Dry exposed rock surfaces, Alt. 300 ft. Scree slope behind Hope Point. South Georgia

Dry rock face, Alt. 250 ft. East-facing rock outcrop in gully leading to Moraine Fjord, Dartmouth Point, Cumberland East Bay. South Georgia

On dry rock surface, Alt. 400 m. Plateau des Petrels near Pt. 384, Possession Island. Crozet

On rock surface, Alt. 120 m. Plateau between valleys leading to Crique de la Chaloupe and Crique du Sphinx, east of Le Donjon, Possession Island. Crozet

Locally frequent as cushions on the rocks. 200 ft. NW facing rocks c. half a mile south of North Point. Site 10. Signy. South Orkney Islands

On moss on rock face above shore. Alt. 4m. Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula

Most N-facing rocks, Alt. 50 m. Metchnikoff Point, Brabant Island. Antarctic Peninsula

On stones of stone stripes, Alt. 125 m. To N of Spindrift Col, Signy Island. South Orkney Islands

On Andreaea, Signy Island. South Orkney Islands

Sheltered rock close to sea, Alt. 20 m. Cape Roux, Brabant Island. Antarctic Peninsula

On whalebone on isthmus. Alt. 8m. The Naze, James Ross Island. Antarctic Peninsula

Rocks and boulders. Alt. 50m. Limestone Valley, Signy Island. South Orkney Islands

Scree. Alt. 80m. Khyber Pass, Signy Island. South Orkney Islands

On moribund Bryum algens, Alt. 5-25 m. Island to west of Dismal Island, Faure Islands, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

Alt. 15-130m. Slope to W of crater, SW of Collins Point. Deception Island. South Shetland Islands

On soil. Alt. 300 m. Summit of south peak, Lagotellerie Island. Antarctic Peninsula

On Drepanocladus uncinatus on dry stony slope. Alt. 25m. Polynesia Point, Signy Island. South Orkney Islands

Steep W facing slope. Scoria. Alt. 315m. Ridge above Vapour Col. Deception Island. South Shetland Islands

On large boulder. Alt. 30 m. Orwell Glacier moraine, Signy Island. South Orkney Islands

Sheltered habitat in deep hollow between boulders. Alt. 50 m. Inexpressible Island. Antarctica, Ross Sector

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

Small rocky outcrop abutting glacier, exposed. Evidence of recent glacial recession, few gull nests, W-facing, Alt. 5 m. Chiriguano Bay, Brabant Island. Antarctic Peninsula

SW Collins Point. Alt. 25-35m Deception Island. South Shetland Islands

Crevices of large boulder, Alt. 300 ft. Valley floor, west side, towards head of Whale Valley. South Georgia