The Graphidaceae are a family of lichen-forming fungi in the order Graphidales. The family contains nearly a hundred genera and more than 2000 species. Although the family has a cosmopolitan distribution, most Graphidaceae species occur in tropical regions, and typically grow on bark.
Nadvornikia is a genus of lichen-forming fungi in the family Graphidaceae. Species in the genus are corticolous (bark-dwelling) and crustose.
Ocellularia upretii is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. It is found in India.
Leucodecton coppinsii is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. It is found in lowland forests of Sarawak, Malaysia.
Acanthothecis roseola is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. Found in Brazil, it was formally described as a new species in 2022 by Shirley Cunha Feuerstein. The type specimen was collected from the Parque Estadual do Papagaio Charão. The lichen has a whitish to greenish, cracked thallus with a black prothallus. Crystals of calcium oxalate are abundant below the algal layer and the hamathecium. The lichen contains norstictic acid, stictic acid, and subnorstictic acid, which are lichen products that can be detected using thin-layer chromatography. The specific epithet roseola refers to the pinkish-coloured margins of the ascomata.
Carbacanthographis megalospora is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. Found in Brazil, it was formally described as a new species in 2022 by Shirley Cunha Feuerstein and Robert Lücking. The type specimen was collected by the first author from the Augusto Ruschi Biological Reserve at an altitude of 800 m (2,600 ft). The lichen has a whitish grey thallus with a thin cortex and an underlying black prothallus. Its asci contain a single ascospore. These spores are hyaline, and typically measure 235–255 by 30–40 μm. The specific epithet alludes to the large spores, the largest known in genus Carbacanthographis. C. megalospora contains stictic acid, cryptostictic acid, and constictic acid, which are lichen products that can be detected using thin-layer chromatography.
Cruentotrema is a genus of corticolous (bark-dwelling) lichens in the family Graphidaceae. It has seven species.
Myriochapsa is a genus of corticolous (bark-dwelling), crustose lichens in the subfamily Graphidoidae of the family Graphidaceae. It has three species. The genus was circumscribed in 2013 by Marcela Cáceres, Robert Lücking, and H. Thorsten Lumbsch, with the Brazilian Myriochapsa psoromica assigned as the type species. The generic name combines Myriotrema and Chapsa, referring to the two Graphidaceae genera that it resembles. The main distinguishing characteristics of the new genus are its densely corticate thallus, and the presence of the lichen product psoromic acid. Additionally, its apothecia have wider pores, with differently textured margins. Although originally created as a monotypic genus, Harrie Sipman added two South American species in 2014.
Austrographa is a genus of lichen-forming fungi in the family Roccellaceae. It has three species. The genus was circumscribed in 2013 by lichenologists Laurens Sparrius, John Elix, and Alan Archer, with Austrographa kurriminensis assigned as the type species. The genus had been published invalidly on two separate occasions. All three species in the genus were found in a mangrove stand in Queensland, Australia. The genus was discovered in Australia, and the name Austrographa reflects this.
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).
Pseudochapsa lueckingii is a species of corticolous (bark-dwelling), crustose lichen in the family Graphidaceae. It is known only from a single collection in São Paulo, Brazil.
Clandestinotrema is a genus of lichen-forming fungi in the family Graphidaceae. It has 17 species. They typically inhabit montane and cloud forest at higher elevations in the tropics.
Clandestinotrema carbonera is a species of corticolous (bark-dwelling), crustose lichen in the family Graphidaceae. Found in Venezuela, it was formally described as a new species in 2018 by Ian Medeiros. The species epithet refers to the type locality – El Bosque La Carbonera-San Eusebio in the Venezuelan Andes. The species had previously been mentioned by lichenologist Mason Hale in a 1978 publication, but he did not described it formally. This was the first reported instance of hypostictic acid isolated from a lichen.
Coenogonium australiense is a species of corticolous (bark-dwelling), crustose lichen in the family Coenogoniaceae. Found in Australia, it was formally described as a new species in 2018 by lichenologists Gintaras Kantvilas and Robert Lücking. The type specimen was collected by the first author near Little Fisher River (Tasmania) at an altitude of 880 m (2,890 ft), where it was found in a rainforest growing on Nothofagus cunninghamii. The species epithet australiense refers to its geographical distribution. In addition to Tasmania, the lichen has also been documented from New South Wales and Kangaroo Island. In the latter location it was found in remnant stands of coniferous woodland, where it was growing on the bark of old, fissured Callitris trunks.
Redonographa is a genus of lichen-forming fungi in the monogeneric family Redonographaceae. It has five species.
Austrotrema is a genus of lichen-forming fungi in the family Graphidaceae. It is primarily found in the Australian-Southeast Asian region. The genus is characterized by small, pore-like apothecia with a double margin, faintly amyloid ascospores, and stictic acid chemistry. Austrotrema species grow on tree bark and have a continuous thallus with a cortex that is prosoplectenchymatous–featuring densely packed, filamentous fungal hyphae that run parallel to the surface of the lichen, creating a compact and firm texture. The genus is closely related to Thelotrema and Leucodecton, but can be distinguished from them based on molecular phylogenetic data, specific morphological traits, and its secondary chemistry. Currently, Austrotrema comprises three species.
Jocatoa is a fungal genus in the family Graphidaceae. It contains the single species Jocatoa agminalis, a corticolous (bark-dwelling), crustose lichen that can be found in dry forests and semi-arid regions throughout Colombia, Mexico, and the United States. The genus is characterized by its simple, thin paraphysis tips and the absence of an epithecium. Named in honor of the late Professor José Castillo Tovar for his contributions to Mexican mycology, Jocatoa is distinguishable from other superficially similar genera such as Diorygma and Glyphis based on its distinctive features, chemical composition, and molecular data.
Xalocoa is a single-species fungal genus in the family Graphidaceae. The genus was circumscribed in 2013 by lichenologists Ekaphan Kraichak, Robert Lücking, and H. Thorsten Lumbsch. It contains Xalocoa ocellata, a corticolous (bark-dwelling), crustose lichen that was originally described by Elias Magnus Fries in 1831.
Sanguinotrema is a single-species fungal genus in the family Graphidaceae, and subfamily Graphidoideae. It contains the species Sanguinotrema wightii, a mostly corticolous (bark-dwelling), crustose lichen. This species has a pantropical distribution.
Gintarasia is a genus of lichen-forming fungi in the family Graphidaceae. It has seven species, all of which are found in Australia. Gintarasia species are corticolous (bark-dwelling), crustose lichens with a thelotremoid form.
