Diploschistes
# Diploschistes

Diploschistes (crater lichen) is a genus of lichen-forming fungi in the family Graphidaceae. Members of the genus are crustose lichens with a thick, cracked (areolate) body (thallus) with worldwide $distribution.^{:264}$ The fruiting part (apothecia) are immersed in the thick thallus so as to have the appearance of being small $"craters".^{:264}$ The widespread genus contains about 43 species.

## Taxonomy

Johannes Musæus Norman originally circumscribed the genus in 1853. It is in the family Graphidaceae. In 2018, Kraichak and colleagues, using a "temporal phylogenetic" approach to identify temporal bands for specific taxonomic ranks, proposed placing Diploschistes as the type genus of Diploschistaceae, a family originally proposed by Zalbruckner in 1905. This taxonomic proposal was rejected by Robert Lücking in a critical 2019 review of the temporal method for the classification of lichen-forming fungi, using this specific example to highlight several drawbacks of this approach.

## Selected species

* Diploschistes actinostomus (Ach.) Zahlbr. (1892)
* Diploschistes aeneus (Müll.Arg.) Lumbsch (1989)
* Diploschistes albopruinosus Pérez-Vargas, Hern.-Padr. & Elix (2011)
* Diploschistes almbornii C.W.Dodge (1964)
* Diploschistes caesioplumbeus (Nyl.) Vain. (1921)
* Diploschistes candidissimus (Kremp.) Zahlbr. (1924)
* Diploschistes cinereocaesius (Sw.) Vain. (1921)
* Diploschistes conceptionis Vain. (1899)
* Diploschistes diacapsis (Ach.) Lumbsch (1988)
* Diploschistes diploschistoides (Vain.) G.Salisb. (1972)
* Diploschistes elixii Lumbsch & Mangold (2007)
* Diploschistes euganeus (A.Massal.) J.Steiner (1919)
* Diploschistes farinosus (Anzi) Vězda (1974)
* Diploschistes gypsaceus (Ach.) Zahlbr. (1892)
* Diploschistes gyrophoricus Lumbsch & Elix (1989)
* Diploschistes hensseniae Lumbsch & Elix (1985)
* Diploschistes microsporus Lumbsch & Elix (2003)
* Diploschistes muscorum (Scop.) R.Sant. (1980)
* Diploschistes neutrophilus (Clauzade & Cl.Roux) Fern.-Brime & Llimona (2013)
* Diploschistes scruposus (Schreb.) Norman (1852)
* Diploschistes sticticus (Körb.) Müll.Arg. (1894)
* Diploschistes thunbergianus (Ach.) Lumbsch & Vězda (1993)
* Diploschistes tianshanensis A.Abbas, S.Y.Guo & Ababaikeli (2016)
* Diploschistes wui A.Abbas, S.Y.Guo & Ababaikeli (2018)
* Diploschistes xinjiangensis A.Abbas & S.Y.Guo (2015)
