''Physconia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...

in the family

Physciaceae The Physciaceae are a family of mostly lichen-forming fungi belonging to the class Lecanoromycetes in the division Ascomycota. A 2016 estimate placed 19 genera and 601 species in the family. Genera This is a list of the genera contained wi ...

. It has about 25 species. The genus was

circumscribed In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon. The center of this circle is called the circumcenter and its radius is called the circumradius. Not every polyg ...

by Czech lichenologist

Josef Poelt Josef Poelt was a botanist, bryologist and lichenologist. He held the chair in Systematic Botany and Plant Geography at the Free University of Berlin (1965 - 1972) and then was head of the Botanical Institute and Botanical Garden of Graz Universi ...

in 1965, with ''

Physconia pulverulenta ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with '' Physconia pulverulenta'' assigned as the type species. Species ...

'' assigned as the

type species In 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 species that contains the biological type specimen ...

Species

*''

Physconia californica ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with ''Physconia pulverulenta'' assigned as the type species. Species * ...

'' *''

Physconia chinensis ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with ''Physconia pulverulenta'' assigned as the type species. Species * ...

'' *''

Physconia distorta ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with ''Physconia pulverulenta'' assigned as the type species. Species * ...

'' *''

Physconia enteroxantha ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with ''Physconia pulverulenta'' assigned as the type species. Species * ...

'' *''

Physconia fallax ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with '' Physconia pulverulenta'' assigned as the type species In zoolo ...

'' *''

Physconia grisea ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with '' Physconia pulverulenta'' assigned as the type species. Species ...

'' *''

Physconia jacutica ''Physconia jacutica'' is a species of saxicolous (rock-dwelling), foliose lichen in the family Physciaceae. It is found in the Russian Far East. Taxonomy The lichen was formally described as a new species in 2007 by Gennadii Urbanavichus, Teuv ...

'' *''

Physconia labrata ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with '' Physconia pulverulenta'' assigned as the type species. Species ...

'' *''

Physconia muscigena ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with ''Physconia pulverulenta'' assigned as the type species. Species * ...

'' *''

Physconia perisidiosa ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with '' Physconia pulverulenta'' assigned as the type species. Species ...

'' *''

Physconia rossica ''Physconia rossica'' is a species of saxicolous (rock-dwelling), foliose lichen in the family Physciaceae. It is found in mountainous regions of the Russian Far East, Siberia, and Eastern Europe. Taxonomy The lichen was formally described as a ...

'' *''

Physconia sikkimensis ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with ''Physconia pulverulenta'' assigned as the type species. Species * ...

'' *''

Physconia thorstenii ''Physconia'' is a genus of lichen-forming fungi in the family Physciaceae. It has about 25 species. The genus was circumscribed by Czech lichenologist Josef Poelt in 1965, with ''Physconia pulverulenta'' assigned as the type species. Species * ...

References

Caliciales Lichen genera Caliciales genera Taxa described in 1965 Taxa named by Josef Poelt {{Caliciales-stub