''Gyalectidium'' 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 ...

in the family

Gomphillaceae The Gomphillaceae are a family of lichen-forming fungi in the order Graphidales. Species in this family are found mostly in tropical regions. The family underwent a major molecular phylogenetics-led reorganisation in 2023, in which 17 genera were ...

. A 2020 estimates placed 52 species in the genus. The genus 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 lichenologist

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 1881. He included 3 species: ''G. xantholeucum'', ''G. dispersum'', and ''G. filicinum''; the last of these is now 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 ...

of the genus.

Species

*'' Gyalectidium appendiculatum'' *'' Gyalectidium areolatum'' *'' Gyalectidium atrosquamulatum'' *'' Gyalectidium aurelii'' *''

Gyalectidium australe ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *'' Gyalectidium barbatum'' – Mexico *'' Gyalectidium catenulatum'' *'' Gyalectidium caucasicum'' *''

Gyalectidium chilense ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *''

Gyalectidium ciliatum ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *''

Gyalectidium cinereodiscus ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *''

Gyalectidium conchiferum ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *''

Gyalectidium denticulatum ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *''

Gyalectidium fantasticum ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *'' Gyalectidium filicinum'' *''

Gyalectidium flabellatum ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *''

Gyalectidium floridense ''Gyalectidium floridense'' is a species of foliicolous (leaf-dwelling), crustose lichen in the family Gomphillaceae. It is found in the southeastern United States, where it grows on the leaves of ''Citrus'' and palmetto. Taxonomy It was f ...

'' –

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

, USA *''

Gyalectidium fuscum ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *'' Gyalectidium gahavisukanam'' *'' Gyalectidium imperfectum'' *'' Gyalectidium kenyanum'' *'' Gyalectidium laciniatum'' *'' Gyalectidium macaronesicum'' *'' Gyalectidium maracae'' *'' Gyalectidium membranaceum'' *'' Gyalectidium microcarpum'' *'' Gyalectidium minus'' *'' Gyalectidium nashii'' *'' Gyalectidium novoguineense'' *''

Gyalectidium pallidum ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscription (taxonomy), circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. ...

'' *'' Gyalectidium paolae'' *'' Gyalectidium plicatum'' *'' Gyalectidium puntilloi'' *''

Gyalectidium radiatum ''Gyalectidium'' is a genus of lichen-forming fungi in the family Gomphillaceae. A 2020 estimates placed 52 species in the genus. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1881. He included 3 species: ''G ...

'' *'' Gyalectidium rosae-emiliae'' *'' Gyalectidium sanmartinense'' *'' Gyalectidium shimanense'' – Japan *'' Gyalectidium tuckerae'' –

Louisiana Louisiana ( ; ; ) is a state in the Deep South and South Central regions of the United States. It borders Texas to the west, Arkansas to the north, and Mississippi to the east. Of the 50 U.S. states, it ranks 31st in area and 25 ...

, USA *'' Gyalectidium ulloae'' – Mexico *'' Gyalectidium verruculosum'' *'' Gyalectidium viride'' –

Alabama Alabama ( ) is a U.S. state, state in the Southeastern United States, Southeastern and Deep South, Deep Southern regions of the United States. It borders Tennessee to the north, Georgia (U.S. state), Georgia to the east, Florida and the Gu ...

, USA *'' Gyalectidium yahriae'' – Florida, USA

References

Gomphillaceae Lichen genera Graphidales genera Taxa described in 1881 Taxa named by Johannes Müller Argoviensis {{Lecanoromycetes-stub