Sagiolechia is a genus of lichen-forming fungi in the family Sagiolechiaceae. The genus was circumscribed by lichenologist Abramo Bartolommeo Massalongo in 1854, who assigned Sagiolechia protuberans as the type species. The family Sagiolechiaceae was proposed in 2010 to contain Sagiolechia as the type genus, and genus Rhexophiale; molecular phylogenetic analysis showed that these two genera formed a distinct clade in the Ostropales.
Porpidia is a genus of crustose lichens in the family Lecideaceae.
Xenolecia is a genus of saxicolous (rock-dwelling) and crustose lichens in the family Lecideaceae. It has two species: X. cataractarum, and the type species, X. spadicomma. The genus was circumscribed by German lichenologist Hannes Hertel in 1987 to contain the type, a lichen known at that time only from the type locality on Wellington Island, Chile. Its range has since been expanded to include the Falkland Islands and northern Patagonia. X. cataractarum, found in Campbell Island, New Zealand was added to the genus in 2017.
Rhizocarpon is a genus of crustose, saxicolous, lecideoid lichens in the family Rhizocarpaceae. The genus is common in arctic-alpine environments, but also occurs throughout temperate, subtropical, and even tropical regions. They are commonly known as map lichens because of the prothallus forming border-like bands between colonies in some species, like the common map lichen.
Fuscidea is a genus of crustose lichens in the family Fuscideaceae. It has about 40 species. The genus was circumscribed in 1972 by lichenologists Volkmar Wirth and Antonín Vězda, with Fuscidea aggregatilis assigned as the type species.
Coccotrema maritimum is a crustose lichen commonly known as volcano lichen, due to the volcano-like appearance of the fruit bodies. It was first described and named by renowned Canadian lichenologist Irwin Brodo from a population on Haida Gwaii in 1973.
Buellia gypsyensis is a species of crustose lichen in the family Caliciaceae. Found in the Falkland Islands, it was described as a new species in 2019 by British lichenologist Alan Fryday. The type was collected from Gypsy Cove near Port Stanley in East Falkland, where it was found growing on a north-facing rock; it is named for its type locality. The main distinguishing characteristics of the lichen are its filiform (threadlike) conidia and the presence of 5-O-methylhiascic acid as the major secondary chemical in the thallus.
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.
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.
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.
Lecidea streveleri is a species of crustose lichen in the family Lecideaceae. Found in Canada and the United States, it was 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 (Alaska). Here it was on steep slopes in a basin on the west side of Dundas Bay, growing on the bark of an alder tree. The specific epithet streveleri honors Dr. Gregory P. Streveler, who, according to Spribille, is "an extraordinary naturalist and polymath, and author of numerous scientific papers, who has dedicated much of his life to understanding the natural history of Glacier Bay".
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.
Fuscidea appalachensis is a species of saxicolous (rock-dwelling) in the family Fuscideaceae. Found in North America, it was formally described as a new species in 2008 by lichenologist Alan Fryday. The type specimen was collected from top of Tabor Gully in Baxter State Park (Maine) at an elevation of 1,415 m (4,642 ft). Here it was found growing on damp rocks on the side of the gully. The pale grey crustose thalli of Fuscidea appalachensis are 1–2 cm (0.4–0.8 in) in diameter, although neighbouring lichens may coalesce to form larger thalli. The lichen contains divaricatic acid, a secondary compound that can be detected using thin-layer chromatography. The specific epithet alludes to the range of the lichen—the Appalachian Mountains in eastern North America, ranging from New Brunswick to Tennessee at the southern end.
Fuscidea texana is a species of saxicolous (rock-dwelling), crustose lichen in the family Fuscideaceae. Found in the United States, it was formally described as a new species in 2008 by lichenologist Alan Fryday. The type specimen was collected by Clifford Wetmore from the north slope of Emory Peak in Big Bend National Park (Texas) at an elevation of 6,300 ft (1,900 m). The pale pinkish-grey areolate thalli of Fuscidea texana are up to 5 cm (2 in) in diameter, and have a distinct margin. Its ascospores are thick-walled and measure 8–9 by 4.5–5.5 μm. The lichen contains norstictic acid, a secondary compound. Fuscidea texana is only known from the original type collection, dating from 1970. The specific epithet refers to its type locality.
Xenolecia cataractarum is a species of saxicolous and crustose lichen in the family Lecideaceae. It is only known to occur on Campbell Island, New Zealand.
Ochrolechia minuta is a species of crustose lichen in the family Ochrolechiaceae. It was first formally described in 1938 by Swedish lichenologist Gunnar Degelius as Perforaria minuta. The type specimen was collected from the Kodiak Island Borough in Alaska. Toby Spribille transferred it to the genus Ochrolechia in 2020, suggesting that the absence of cephalodia, and the presence of alectoronic acid, indicate that it is "related to the alectoronic acid-containing species of poriform Ochrolechia".
Tephromela lignicola is a species of lignicolous (wood-dwelling), crustose lichen in the family Tephromelataceae. It is found in the Falkland Islands, where it grows on fenceposts and similar timber.
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.
