Chrysotrichaceae is a family of lichenized fungi in the order Arthoniales. Member of this family have a widespread distribution, but are especially prevalent in tropical areas. "Chrysothrichaceae" and "Chrysothricaceae" are alternative spellings that have been used in some older publications; the latter was used by Alexander Zahlbruckner in the protologue publication. Both of these spellings are considered incorrect, and the current spelling has been formalised following a proposal for conservation of Chrysotrichaceae against Pulverariaceae.
Felipes is a genus of lichenized fungi in the order Arthoniales. Circumscribed by Andreas Frisch and Göran Thor in 2014, it contains the single species Felipes leucopellaeus. Genetic analysis shows that the genus falls into the order Arthoniales, but its familial placement is uncertain. Felipes leucopellaeus is found across Europe and North America in temperate and boreal regions, typically in old-growth forest or wooded mires. It is crustose and corticolous.
Chrysothrix is a genus of lichen-forming fungi in the family Chrysothricaceae. They are commonly called gold dust lichens or sulfur dust lichens, because they are bright yellow to greenish-yellow, sometimes flecked with orange, and composed entirely of powdery soredia. Apothecia are never present in North American specimens.
Sagenidiopsis isidiata is a species of corticolous (bark-dwelling) byssoid lichen in the family Arthoniaceae. Found in tropical montane rainforests throughout Central America, South America, and the Antilles, it was described as new to science in 2011. The lichen is characterised by its cream-coloured to greyish thallus and numerous pseudoisidia, which are small, cylindrical outgrowths on its surface.
Dolichousnea is a genus of fruticose lichens in the family Parmeliaceae. It has three species. The widely distributed type species, Dolichousnea longissima, is found in boreal regions of Asia, Europe, and North America.
Chrysothrix flavovirens is a species of crustose and corticolous (bark-dwelling) lichen in the family Chrysotrichaceae. It was formally described as a new species in 1994 by Tor Tønsberg as the sorediate counterpart of the common and widespread Chrysothrix candelaris. The type specimen was collected from Kirkeøy, Norway, where it was found growing on Picea abies. It has a pale greenish-yellow thallus that contains rhizocarpic acid. The lichen is widespread in Europe, and has also been recorded from Japan and North America. In the Atlantic and Mediterranean biogeographic regions of Portugal, it prefers to grow on the acidic bark of coastal conifer trees.
Chrysothrix bergeri is a species of crustose lichen in the family Chrysotrichaceae. It is found in the southeastern United States and the Caribbean, where it grows as a bright yellow, powdery crust on the bark and wood of mostly hardwoods.
Inoderma is a genus of lichen-forming fungi in the family Arthoniaceae. It was resurrected for use in 2015 for a small group of species with the following features: elevated, white pruinose pycnidia, immersed to adnate white pruinose apothecia, and a weakly gelatinized hymenium. Inoderma byssaceum was assigned as the type species for the genus.
Inoderma sorediatum is a species of crustose lichen in the family Arthoniaceae. It is only known to occur on the bark of trees in Poland's Białowieża National Park. It is differentiated from other species in genus Inoderma by the form of its thallus, which is entirely made of powdery, granular soredia, as well as by the presence of a unique combination of lichen products.
Vigneronia is a genus of lichen-forming fungi in the family Roccellaceae. It has five species. The genus was circumscribed in 2014 by Damien Ernst, with Vigneronia spieri assigned as the type species. This species, originally described as Schismatomma spieri from collections made in the Galápagos Islands, has since been recorded from mainland Ecuador and the Antilles (Curaçao). The genus is named after Ernst's wife, Nathalie Vigneron, who accompanied him on collecting trips.
Diromma is a monotypic fungal genus in the family Roccellaceae. It contains the single species Diromma dirinellum, a rare crustose lichen that grows as a parasite on the lichen Dirina ceratoniae. It has a distribution restricted to the Mediterranean Basin.
Gyronactis is a genus of lichen-forming fungi in the family Roccellaceae. It has two species. The genus was circumscribed by Damien Ernst and Anders Tehler in 2014, with G. asiatica assigned as the type species. This lichen, formerly placed in Lecanactis, is only known from the type locality in Myanmar. The genus name alludes to both its similarity with Lecanactis and the presence of gyrophoric acid in the thallus.
Melarthonis is fungal genus in the family Chrysotrichaceae. It is a monotypic genus, containing the single species Melarthonis piceae, a corticolous lichen. Both the genus and species were described as new to science in 2014 by Andreas Frisch and Göran Thor. The type specimen was collected from Mount Oakan at an altitude of 420 m (1,380 ft); there, it was found growing on the bark of a spruce tree in an old-growth forest. It is only known to occur in the type locality. The genus name alludes to the black ascomata that are similar to those in genus Arthonia, while the species epithet refers to the genus of the host tree (Picea).
Vigneronia spieri is a species of corticolous (bark-dwelling), crustose lichen in the family Roccellaceae. It is found in the Galápagos Islands, mainland Ecuador and the Antilles (Curaçao).
Borinquenotrema is a single-species fungal genus in the family Graphidaceae. It contains the species Borinquenotrema soredicarpum, a corticolous (bark-dweling) lichen. Found in Puerto Rico, this lichen is characterized by its carbonizedascomata, which develop from within soralia, and its distinctive distoseptate, violet-blue ascospores. Borinquenotrema soredicarpum grows on tree trunks in shaded understory environments of Tabonuco forests in El Yunque National Forest.
Lecanactis borbonica is a rare species of corticolous (bark-dwelling), lichen in the family Roccellaceae. Found exclusively in Réunion, it forms a crustose thallus and is characterised by its rounded ascomata and the presence of specific chemical compounds.
Paratopeliopsis is a single-species fungal genus in the family Graphidaceae. It contains the species Paratopeliopsis caraibica, a corticolous (bark-dwelling), leprose lichen found in Puerto Rico's forests, where it cohabits with mosses on tree trunks. This lichen sets itself apart from other species in the tribe Thelotremateae, particularly those within the genus Topeliopsis, primarily due to its flour-like thallus and its comparatively small, brown spores.
Sporodophoron is a genus of lichen-forming fungi in the family Arthoniaceae. It includes four corticolous (bark-dwelling) crustose lichen species. Sporodophoron is uniquely characterised by the formation of structures called sporodochia, which are open conidiomata in the form of tufts of conidiophores on the thallus. Although these lichens bear a strong resemblance to Inoderma, another genus within the same family, Sporodophoron's distinct chemical makeup sets it apart from its lichen relatives. Collectively, the genus has a widespread geographical distribution in the Northern Hemisphere, with species found in distinct habitats in North America, Europe, Japan, and the Russian Far East.
Sporodophoron primorskiense is a little-known species of corticolous (bark-dwelling) lichen in the family Arthoniaceae. It is notable for its distinctive white, thin growth patterns and small sporodochia, or spore-producing structures. The species is named after the Primorsky Krai region in the Russian Far East, where it was first discovered. It has since been recorded in Japan.
Chrysothrix chlorina, the sulphur dust lichen, is a species of leprose (powdery) crustose lichen in the family Chrysotrichaceae. Originally described scientifically by the Swedish lichenologist Erik Acharius over 200 years ago, it has been shuffled to many different genera in its taxonomic history before finally being transferred to Chrysothrix in 1981. The lichen has a circumboreal distribution. It is typically saxicolous (rock-dwelling), particularly on the underside of rock overhangs, but has in rare instances been recorded growing on bark and various other substrates.
