''Lithographa'' 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 ...
of
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
Xylographaceae.
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 ...
in 1857 by Finnish botanist
William Nylander, with ''Lithographa petraea'' 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 ...
.
This species is now known as ''
Lithographa tesserata''.
Species
*''
Lithographa graphidioides''
*''
Lithographa olivacea''
*''
Lithographa opegraphoides''
*''
Lithographa serpentina''
*''
Lithographa skottsbergii''
*''
Lithographa tesserata''
References
Baeomycetales
Baeomycetales genera
Lichen genera
Taxa named by William Nylander (botanist)
Taxa described in 1857
{{Lecanoromycetes-stub