''Coccotrema'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

lichen A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualism (biology), m ...

-forming

fungi A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...

. It is the

type genus In biological taxonomy, the type genus (''genus typica'') is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearin ...

of the family

Coccotremataceae The Coccotremataceae are a family of lichen-forming fungi in the order Pertusariales. Species in this widely distributed family grow on bark or rocks, especially in maritime regions. Genera , Species Fungorum accepts 3 genera and 23 species, in ...

, in the order

Pertusariales The Pertusariales are an order (biology), order of fungi in the class Lecanoromycetes, comprising 8 family (biology), families, 31 genera, and over 600 species, many of which form lichens. This diverse group is characterized by complex taxonomy ...

. The genus contains 16 species.

Taxonomy

''Coccotrema'' was

circumscribed In geometry, a circumscribed circle for a set of points is a circle passing through each of them. Such a circle is said to ''circumscribe'' the points or a polygon formed from them; such a polygon is said to be ''inscribed'' in the circle. * Circum ...

by Swiss botanist

Johannes Müller Argoviensis Johann Müller (9 May 1828 – 28 January 1896) was a Swiss botanist who was a specialist in lichens. He published under the name Johannes Müller Argoviensis to distinguish himself from other naturalists with similar names. Biography Müller ...

in 1889, with '' Coccotrema antarcticum'' assigned as the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

. In a 2001 publication, Schmidt and colleagues showed, using

molecular phylogenetics Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

, that the species then known as ''Lepolichen coccophorus'' (the type species of the genus ''Lepolichen'', created by Trevisan in 1853) was nested in a

clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...

that contained ''Coccotrema'' species, and so transferred that species into ''Coccotrema'', as '' Coccotrema coccophorum''. However, the genus ''Lepolichen'' is older than ''Coccotrema'', and so its name has priority according to the rules for botanical nomenclature. To minimize nomenclatural disruption, Alan Fryday and colleagues submitted a proposal to conserve the name ''Coccotrema'' against ''Lepolichen''. The proposal was accepted by the

Nomenclature Committee for Fungi International Botanical Congress (IBC) is an international meeting of botanists in all scientific fields, authorized by the International Association of Botanical and Mycological Societies (IABMS) and held every six years, with the location rotati ...

in 2023.

Species

*'' Coccotrema antarcticum'' *'' Coccotrema citrinescens'' – Europe *'' Coccotrema coccophorum'' *''

Coccotrema colobinum ''Coccotrema'' is a genus of lichen-forming fungi. It is the type genus of the family Coccotremataceae, in the order Pertusariales. The genus contains 16 species. Taxonomy ''Coccotrema'' was circumscription (taxonomy), circumscribed by Swiss bot ...

'' *'' Coccotrema corallinum'' – South America *'' Coccotrema cucurbitula'' *'' Coccotrema fernandezianum'' – South America *'' Coccotrema hahriae'' –

Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...

*'' Coccotrema magellanicum'' – South America *'' Coccotrema maritimum'' – North America *'' Coccotrema minutum'' *'' Coccotrema pocillarium'' *'' Coccotrema porinopsis'' *'' Coccotrema rubromarginatum'' –

Falkland Islands The Falkland Islands (; ), commonly referred to as The Falklands, is an archipelago in the South Atlantic Ocean on the Patagonian Shelf. The principal islands are about east of South America's southern Patagonian coast and from Cape Dub ...

*'' Coccotrema sphaerophorum''

References

{{Taxonbar, from=Q5139256 Pertusariales Pertusariales genera Lichen genera Taxa described in 1889 Taxa named by Johannes Müller Argoviensis