''Rhizoplaca'' 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
Lecanoraceae
The Lecanoraceae are a family of lichenized fungi in the order Lecanorales. Species of this family have a widespread distribution.
Taxonomy
Lecanoraceae was circumscribed by German lichenologist Gustav Wilhelm Körber in 1855.
Genera
According ...
. Members of the genus are
commonly called rimmed navel lichens because of their
umbilicate growth form and
lecanorine
A lichen has lecanorine fruiting body parts if they are shaped like a plate with a ring around them, and that ring is made of tissue similar to the main non-fruiting body part of the lichen.Field Guide to California Lichens, Stephen Sharnoff, Yale ...
(rimmed with
thallus
Thallus (plural: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. Many of these organisms wer ...
-like tissue)
apothecia, also rock-posy lichen and rockbright.
[Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ] The genus has a widespread distribution and contains 11 species.
References
Lecanoraceae
Lecanorales genera
Lichen genera
Taxa named by Friedrich Wilhelm Zopf
Taxa described in 1905
{{Lecanoromycetes-stub