Atrophysma is a fungal genus in the family Pannariaceae. It contains the single species Atrophysma cyanomelanos, a crustose lichen found only in Alaska.
Xenonectriella nephromatis is a species of lichenicolous fungus in the family Nectriaceae. Found in Alaska, it was described as a species new to science in 2020 by Sergio Pérez-Ortega. The type specimen was discovered in the Hoonah–Angoon Census Area in Glacier Bay National Park, where it was growing on a Nephroma lichen. The specific epithet alludes to this host lichen.
Halecania athallina is a species of lichen in the family Leprocaulaceae. Found in Alaska, it was described as new to science in 2020 by British lichenologist Alan Fryday. The type specimen was discovered in Hoonah-Angoon Census Area in Glacier Bay National Park. There it was found growing on argillite rock on an alpine heath with rock outcrops.
Bacidina circumpulla is a species of crustose lichen in the family Ramalinaceae. Found in Alaska and British Columbia, it was described as a new species in 2020 by Stefan Ekman.
Fuscidea muskeg is a species of crustose lichen in the family Fuscideaceae. Found in Alaska, it was described as a new species in 2020 by Tor Tønsberg and Martina Zahradníková. The type species was collected in the Hoonah-Angoon Census Area of Glacier Bay National Park. Here it was found growing on a branch of the tree Pinus contorta in muskeg. The specific epithet muskeg is an Algonquin word for a blanket bog.
Fuscopannaria dillmaniae is a species of lichen in the family Pannariaceae. Found in Alaska, it was described as a new species in 2020 by lichenologist Toby Spribille.
Hydropunctaria alaskana is a species of crustose lichen in the family Verrucariaceae. Found in Alaska, it was described as a new species in 2020 by Holger Thüs and Sergio Pérez-Ortega. The type specimen was collected from the Hoonah-Angoon Census Area in Glacier Bay National Park, where it was found growing on metamorphic rocks beside a creek. Buellia coniops and Verrucaria aethiobola were other lichens on the same rock. Hydropunctaria alaskana is also known to occur on Mitkof Island in Alaska, and on Vancouver Island in British Columbia.
Sclerococcum fissurinae is a species of lichenicolous fungus in the family Dactylosporaceae. Found in Alaska, it was formally described as a new species in 2020 by Sergio Pérez-Ortega. The type specimen was collected in the Hoonah-Angoon Census Area, just outside of Glacier Bay National Park. Here it was found growing on the script lichen species Fissurina insidiosa, which itself was growing on the bark of an alder tree. The specific epithet refers to its host.
Lecania hydrophobica is a species of crustose lichen in the family Ramalinaceae. Found in Alaska, it was described as a new species in 2020 by Toby Spribille and Alan Fryday. The type specimen was collected in the Hoonah-Angoon Census Area of Glacier Bay National Park. Here it was found at an altitude of 9 m (30 ft) growing on a vertical shale outcrop. The specific epithet hydrophobic refers to the hydrophobic (water-repelling) properties of the lichen, which are possibly imparted by the wax-like filaments on the surface of the apothecial disc. Lecania hydrophobica is abundant on sheltered rock overhangs in the type locality, and is also known to occur further south – on southern Baranof Island, and in British Columbia.
Spilonema maritimum is a species of lichen in the family Coccocarpiaceae. Found in Alaska, it was described as a new species in 2020 by lichenologists Toby Spribille and Alan Fryday. The type specimen was collected in Juneau Borough, on the west side of Douglas Island. Here it was found growing on exposed seashore rocks roughly 2 m (6.6 ft) above the high tide line. Its specific epithet maritimum alludes to its close association with maritime rocks.
Miriquidica gyrizans is a species of lichen-forming fungus in the family Lecanoraceae. It is found in Alaska and the Yukon, where it grows on granitic boulders.
Lecanora viridipruinosa is a species of crustose lichen in the family Lecanoraceae. Found in Alaska, it was formally described as a new species by lichenologists Måns Svensson and Toby Spribille. The type specimen was collected from the Hoonah-Angoon Census Area in Glacier Bay National Park. Here it was found growing on exposed argillite rock in an alpine heath at an elevation of 920 m (3,020 ft). The specific epithet viridipruinosa refers to the greenish pruina on the discs of the apothecia. The lichen is only known to occur in the type locality.
Placynthium glaciale is a species of saxicolous lichen in the family Placynthiaceae. Found in Alaska, it was described as a new species in 2020 by lichenologists Alan Fryday and Toby Spribille. The type specimen was collected in the Hoonah-Angoon Census Area of Glacier Bay National Park, on the upper end of Muir Inlet. Here the lichen was found growing on an argillite-like boulder as well as exposed cobbles in post-glacial soil. The specific epithet glaciale alludes to its association with glacial forelands.
Sagiolechia phaeospora is a species of crustose lichen in the family Sagiolechiaceae. It is found in the alpine tundra of Alaska.
Lecidea griseomarginata is a species of lichen in the family Lecideaceae. Found in Alaska, it was described as a new species in 2020 by lichenologist Alan Fryday. The type specimen was collected in the Hoonah-Angoon Census Area of Glacier Bay National Park, where it was found growing on a granitic rock along the shoreline of Ptarmigan Creek. It is only known to occur at the type locality. The specific epithet griseomarginata refers to the gray proper margin of the apothecia.
Ochrolechia cooperi is a species of crustose lichen in the family Ochrolechiaceae. Occurring only in southern Alaska, it was formally described as a new species in 2020 by lichenologist Toby Spribille. The type specimen was collected in the Hoonah-Angoon Census Area of Glacier Bay National Park, northeast of Gustavus. Here the lichen was found in muskeg growing on a conifer log that still had its bark. The specific epithet honors American ecologist William Skinner Cooper, "whose studies on plant succession in Glacier Bay and subsequent political lobbying efforts were influential in the establishment of Glacier Bay as a National Monument in 1925".
Thelocarpon immersum is a species of lichen in the family Thelocarpaceae. Found in Alaska, it was described as a new species in 2020 by lichenologist Alan Fryday. The type specimen was collected in the Hoonah-Angoon Census Area of Glacier Bay National Park. Here the lichen was found near the park entrance growing on soil in a calcareous wet meadow in a glacial outwash plain. The specific epithet immersum refers to the perithecioid ascomata, which are immersed in "a mat of cyanobacteria and chlorococcoid algae, with only the tips protruding". The lichen is only known from the type locality.
Verrucaria nodosa is a species of saxicolous (rock-dwelling), crustose lichen in the family Verrucariaceae. Found in freshwater habitats in Wales, it was formally described as a new species in 2013 by lichenologist Alan Orange. The type specimen was collected by the author north-west of Llanuwchllyn, Merioneth, where it was found growing on an unshaded rock in a stream. The lichen has a grey-green to dark brown thallus with an uneven surface crust. Its ascomata are in the form of somewhat convex to hemispherical perithecia measuring 220–460 μm in diameter, with an inconspicuous or tiny ostiole. Ascospores are ellipsoid and colourless, lack any septa, and typically measure 20.5–22.2–24.0 by 90–97–105 μm. The species is known only from a few streams in Wales, where it grows on shaded or lightly shaded rocks. Associated lichen species include Ionaspis lacustris, Rhizocarpon lavatum, Porpidia hydrophila, Sporodictyon cruentum, and Trapelia coarctata, as well as the mosses Racomitrium aciculare and Scapania undulata.
Catillaria gilbertii is a rare species of saxicolous (rock-dwelling), crustose lichen in the family Catillariaceae. It is found in the Central Highlands of Scotland.
Schaereria porpidioides is a species of saxicolous (rock-dwelling), crustose lichen in the family Schaereriaceae. It is found in the Falkland Islands.
