''Polyblastidium'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

foliose lichen Foliose lichen is one of the morphological classes of lichens, which are complex organisms that arise from the symbiotic relationship between fungi and a photosynthetic partner, typically algae. This partnership allows lichen to live in divers ...

s 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 withi ...

. It has 18 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 po ...

by German lichenologist

Klaus Kalb Klaus Kalb (born 1942) is a German lichenologist and an authority on tropical lichens. Biography Klaus Kalb was born in Nuremberg in 1942 and grew up in southern Bavaria. From 1960 to 1965 he studied biology, chemistry, and geography at ...

in 2015, with ''

Polyblastidium japonicum ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with '' Polyblastidium japonicum'' assigned as the type species. ''Polyblastidi ...

'' 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( ...

. ''Polyblastidium'' is similar in

morphology Morphology, from the Greek and meaning "study of shape", may refer to: Disciplines *Morphology (archaeology), study of the shapes or forms of artifacts *Morphology (astronomy), study of the shape of astronomical objects such as nebulae, galaxies, ...

to ''

Heterodermia ''Heterodermia'' is a genus of lichenized fungi in the family Physciaceae. The genus has a widespread distribution, especially in tropical regions, and contains about 80 species. Description ''Heterodermia'' are subterranean or almost upright ...

'', but its lower surface is cobweb-like in structure (''arachnoid''), and its

ascospore An ascus (; ) is the sexual spore-bearing cell produced in ascomycete fungi. Each ascus usually contains eight ascospores (or octad), produced by meiosis followed, in most species, by a mitotic cell division. However, asci in some genera o ...

s are mostly 1-

septate In biology, a septum (Latin for ''something that encloses''; plural septa) is a wall, dividing a cavity or structure into smaller ones. A cavity or structure divided in this way may be referred to as septate. Examples Human anatomy * Interatr ...

with 1 to 3 sporoblastidia (small subsidiary cavities). It is this latter feature that is referenced in the genus name ''Polyblastidium'' (''poly'' = "many" + sporoblastidia). The genus contains several species that were formerly classified in the genus '' Anaptychia'' (

section Section, Sectioning or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially of a chapter, in books and documents ** Section sign ...

''Polyblastidium''

series Series may refer to: People with the name * Caroline Series (born 1951), English mathematician, daughter of George Series * George Series (1920–1995), English physicist Arts, entertainment, and media Music * Series, the ordered sets used i ...

''Polyblastidium'').

Species

*'' Polyblastidium appendiculatum'' *''

Polyblastidium casarettianum ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with ''Polyblastidium japonicum'' assigned as the type species. ''Polyblastidiu ...

'' *''

Polyblastidium chilense ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with '' Polyblastidium japonicum'' assigned as the type species. ''Polyblastidi ...

'' *''

Polyblastidium corallophorum ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with ''Polyblastidium japonicum'' assigned as the type species. ''Polyblasti ...

'' *'' Polyblastidium dendriticum'' *'' Polyblastidium fragilissimum'' *'' Polyblastidium hypocaesium'' *'' Polyblastidium hypoleucum'' *''

'' *''

Polyblastidium magellanicum ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with '' Polyblastidium japonicum'' assigned as the type species. ''Polyblastidi ...

'' *'' Polyblastidium microphyllum'' *'' Polyblastidium neglectum'' *'' Polyblastidium propaguliferum'' *''

Polyblastidium queenslandicum ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with ''Polyblastidium japonicum'' assigned as the type species. ''Polyblasti ...

'' *''

Polyblastidium squamulosum ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with ''Polyblastidium japonicum'' assigned as the type species. ''Polyblasti ...

'' *''

Polyblastidium subneglectum ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with ''Polyblastidium japonicum'' assigned as the type species. ''Polyblasti ...

'' *''

Polyblastidium togashii ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with ''Polyblastidium japonicum'' assigned as the type species. ''Polyblasti ...

'' *''

Polyblastidium violostriatum ''Polyblastidium'' is a genus of foliose lichens in the family Physciaceae. It has 18 species. The genus was circumscribed by German lichenologist Klaus Kalb in 2015, with ''Polyblastidium japonicum'' assigned as the type species. ''Polyblasti ...

References

Caliciales Lichen genera Taxa described in 2015 Caliciales genera Taxa named by Klaus Kalb {{Caliciales-stub