''Roccellographa'' 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
Roccellographaceae
Roccellographaceae is a family of lichen-forming fungi in the order Arthoniales. It contains three genera: '' Dimidiographa'',
'' Fulvophyton'', and '' Roccellographa''.
Taxonomy
The family was circumscribed by Damien Ernst and Anders Tehler in ...
.
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 Austrian lichenologist
Julius Steiner in 1902, with ''
Roccellographa cretacea
''Roccellographa'' is a genus of lichen-forming fungi in the family Roccellographaceae. The genus was circumscribed by Austrian lichenologist Julius Steiner in 1902, with '' Roccellographa cretacea'' assigned as the type, and at that time, the ...
'' assigned as the
type, and at that time, the only species.
Three additional species have since been transferred to the genus from other genera.
Species
*''
Roccellographa circumscripta
''Roccellographa'' is a genus of lichen-forming fungi in the family Roccellographaceae. 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 po ...
''
*''
Roccellographa cretacea
''Roccellographa'' is a genus of lichen-forming fungi in the family Roccellographaceae. The genus was circumscribed by Austrian lichenologist Julius Steiner in 1902, with '' Roccellographa cretacea'' assigned as the type, and at that time, the ...
''
*''
Roccellographa muriformis''
*''
Roccellographa sorediata''
References
Arthoniomycetes
Lichen genera
Arthoniomycetes genera
Taxa described in 1902
{{Arthoniomycetes-stub