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On rock with Usnea sphacelata. Alt. 150m. Fortress Hill, James Ross Island. Antarctic Peninsula

Steeple Peaks, Palmer Land. Antarctic Peninsula

Dry boulders. Loken Moraines, W moraine above Newcomb Bay. Alt. 140m. Budd Coast. Antarctica, Wilkes Sector

Dry rock surfaces. Very restricted. Usually in melt runnel channels. Alt. 50m. Browning Peninsula, W side. Budd Coast. Antarctica, Wilkes Sector

A common stone with lichen, 10-50 yds inland from sea ice edge, Alt. 3-7 m. NE corner of Millerand Island, Marguerite Bay. Antarctic Peninsula

Rock surfaces. Alt. 35m. SSSI area, Bailey Peninsula. Budd Coast. Antarctica, Wilkes Sector

Dry rocks especially in melt channels. Alt. 60m. SSSI area, Bailey Peninsula. Budd Coast. Antarctica, Wilkes Sector

On pebbles in moist melt runnel area forming pure stands up to 1mx1m. Alt. 10m. Stevenson Cove, Clark Peninsula. Budd Coast. Antarctica, Wilkes Sector

Dry rocks and stones. Alt. 75m. N side Mitchell Peninsula, O'Brien Bay. Budd Coast. Antarctica, Wilkes Sector

Growing along cleavage lines, very dry, no snow left above, NE aspect rock buttress, 33m above glacier, Belemnite Point, Alexander Island. Antarctic Peninsula, Alexander Island

On dry exposed rock. Alt. 150m. Hill top to S side of St. Martha Cove, James Ross Island. Antarctic Peninsula

Damp crack of darker rock, south-west side of summit, Alt. 4300 ft. The south-west spur running from 4000ft. to minor summit, north of Engle Peaks ridge. Antarctic Peninsula

Sloping outcrop, facing west, moist when sampled, Alt. 4350 ft. Flat broad ridge, Engle Peaks. Antarctic Peninsula

Amongst loose open stones facing north-east, light coloured rock, Alt. 2325 ft. Major ridge running from 2300ft. to 4400ft. north Engle Peaks. Antarctic Peninsula

In the damp gravel areas in between outcrop, Alt. 5750 ft. Ridge running west from small knoll to summit, to the east of Welch Mountains. Antarctic Peninsula

Outcrop in a crack running north-south, Alt. 5800 ft. Low ridge running north-west to south-east from 'Mount Norohill', to the east of Welch Mountains. Antarctic Peninsula

In cracks in outcrop on flattish ridge, Alt. 5850 ft. Next outcrop to west of small knoll, east of Welch Mountains. Antarctic Peninsula

Ground level gravel facing west, Alt. 5650 ft. The western ridge of Hall Ridge. Antarctic Peninsula

Set in 3" scoop in north-facing outcrop, Alt. 5675 ft. North-south facing, low outlying ridge to the east of Welch Mountains. Antarctic Peninsula

Granite crag facing N. Alt. 620 m. E of McCarrol Peak, Jason Peninsula. Larson Ice Shelf. Antarctic Peninsula

On dry rock. Alt. 150m. Gneiss Hills (S) towards Porteous Point, Signy Island. South Orkney Islands

Rock surfaces. Alt. c.50ft. Near the base hut, Horseshoe Island, Fallieres Coast. Antarctic Peninsula, Fallieres Coast

On south side of ridge on flat rock inclined to north, Alt. 3600 ft. A mile long ridge running north-west to south-east, south of Bingham Glacier. Antarctic Peninsula

Rocks on cliff face, Alt. 50 ft. Cape Tuxen, Graham Coast. Antarctic Peninsula, Graham Coast

Sheltered rocks, Alt. 50 ft. Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

North facing dry rock, Alt. 50 ft. Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

Antarctica. MacRobertson Land: Fischer Nunatak, on small pebbles on the summit. Antarctica, Enderby Sector

On rocks with Usnea antarctica, Alt. 50 ft. Galindez Island, Argentine Islands, Graham Coast. Antarctic Peninsula, Graham Coast

Loose stones on west-facing slope of small isolated hillock, Alt. 6200 ft. Small hillock on first ridge north of Davis ridge, running east from Mount Jackson. Antarctic Peninsula

Amongst outcrop on the flattish ridge of the Nunatak facing north, Alt. 6725 ft. Isolated rock Nunatak north-east of Mount Jackson. Antarctic Peninsula

Lying on outcrop facing north, Alt. 7675 ft. Rock ridge running north-south, Mount Jackson area. Antarctic Peninsula

Small 3" square colony on vertical wall facing north-east, Alt. 7025 ft. North-south ridge, Mount Jackson area. Antarctic Peninsula

Foot of Blades Ridge, Alt. 5000 ft. Station 91, Tottanfjella, Queen Maud Land. Antarctica, Maud Sector

Upper surface of rocks in damp situation, Alt. 80 ft. south-east ridge of Alectoria Island, Prince Gustav Channel. Antarctic Peninsula, Trinity Peninsula, East Coast

Upper flat surface of dry rock, Alt. c. 150 ft. Alectoria Island, Prince Gustav Channel. Antarctic Peninsula, Trinity Peninsula, East Coast

Upper surfaces of clean rounded rocks, Alt. 150 ft. Alectoria Island, Prince Gustav Channel. Antarctic Peninsula, Trinity Peninsula, East Coast

Flat upper surfaces of dry summit rock, Alt. 150 ft. Alectoria Island, Prince Gustav Channel. Antarctic Peninsula, Trinity Peninsula, East Coast

On SE side of outcrop. Moutonnee Valley, Alexander Island. Antarctic Peninsula, Alexander Island

In north facing cracks, waterlogged and frozen, c. 100 yds from sea, Alt. 50 ft. Mothes Point, Barlas Channel, Adelaide Island. Antarctic Peninsula, Loubet Coast

On rocks in moraine. Alt. 50 m. Crepin Point, Admiralty Bay, King George Island. South Shetland Islands

In hollows amongst loose stones on flattish parts of the crest, Alt. 475 ft. Nunatak to the north of Theodolite Hill. Antarctic Peninsula

Un-named peak above Hippocrates Glacier, n-facing ice-free scree, Basalt rock, sparse only c. 20 stands, each no larger than 10 cm. diam. Alt. 950 m. Brabant Island. Antarctic Peninsula

Alt. 960 m. Behrendt Mountains, Ellsworth Land Antarctic Peninsula

Alt. <50 m. On dry rocks. Alamode Island, Terra Firma Islands. Antarctic Peninsula, Fallieres Coast

Rock ridge. Alt. 30 m. Horseshoe Island, North Marguerite Bay. Antarctic Peninsula, Fallieres Coast

On rocks and stones. Gondwana Base area, Victoria Land. Antarctica, Ross Sector

Nestled in a small shallow hollow, Alt. 5650 ft. The eastern outcrop of the low ridge running east-west, from 'Mount Norohill', east of Welch Mountains. Antarctic Peninsula

Coarse sandy soil. Alt. 1234 m. Scattered outcrop on snowy slope, c. 1 km NW of Henry Nunatak, Ellsworth Land. Antarctica, Scotia Sector

Alt. 850 m. North of Mt. Hirman, Behrendt Mountains, Ellsworth Land. Antarctica, Scotia Sector

Flattish slab inclined to the north, sample damp, as below melting ice, Alt. 3700 ft. Minor ridge running east-west, south of Bingham Glacier. Antarctic Peninsula