''Leiorreuma'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

script lichen A script lichen, or graphid lichen, is a member of a group of lichens which have spore producing structures that look like writing on the lichen body. The structures are elongated and narrow apothecia called lirellae, which look like short scribbl ...

s in the family

Graphidaceae The Graphidaceae are a family of lichen-forming fungi in the order Graphidales. The family contains nearly a hundred genera and more than 2000 species. Although the family has a cosmopolitan distribution, most Graphidaceae species occur in tropic ...

. It has 18 species. The genus was

circumscribed In geometry, a circumscribed circle for a set of points is a circle passing through each of them. Such a circle is said to ''circumscribe'' the points or a polygon formed from them; such a polygon is said to be ''inscribed'' in the circle. * Circum ...

by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the

type species In International_Code_of_Zoological_Nomenclature, 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 spe ...

Description

''Leiorreuma'' is identified by certain features. It has

apothecia An ascocarp, or ascoma (: ascomata), is the fruiting body ( sporocarp) of an ascomycete phylum fungus. It consists of very tightly interwoven hyphae and millions of embedded asci, each of which typically contains four to eight ascospores. As ...

with noticeable opened . The is often thin on the sides but well-developed at the base and appears . The

hymenium The hymenium is the tissue layer on the hymenophore of a fungal fruiting body where the cells develop into basidia or asci, which produce spores. In some species all of the cells of the hymenium develop into basidia or asci, while in oth ...

is dotted with small specks, and the spores are pale brown and have thin walls with crosswise

septa SEPTA, the Southeastern Pennsylvania Transportation Authority, is a regional public transportation authority that operates bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly four million people througho ...

or are divided into many compartments (). They are not stained by

iodine Iodine is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at , and boils to a vi ...

Species

* '' Leiorreuma convariatum'' * ''

Leiorreuma crassimarginatum ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' – China * ''

Leiorreuma dilatatum ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' * ''

Leiorreuma ellipticum ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' * '' Leiorreuma erodens'' –

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

* '' Leiorreuma exaltatum'' * ''

Leiorreuma explicans ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscription (taxonomy), circumscribed by Franz Gerhard Eschweiler in 1824, with ''Leiorreuma hepaticum'' assigned as the type species. D ...

'' * '' Leiorreuma hepaticum'' * ''

Leiorreuma hypomelaenoides ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' – Thailand * ''

Leiorreuma hypomelaenum ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' * ''

Leiorreuma melanostalazans ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' * ''

Leiorreuma nicobarense ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' – India * ''

Leiorreuma nornotaticum ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' * ''

Leiorreuma patellulum ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' * ''

Leiorreuma sericeum ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' * ''

Leiorreuma subpatellulum ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' – India * ''

Leiorreuma taiwanense ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' – Taiwan * ''

Leiorreuma vaginans ''Leiorreuma'' is a genus of script lichens in the family Graphidaceae. It has 18 species. The genus was circumscribed by Franz Gerhard Eschweiler in 1824, with '' Leiorreuma hepaticum'' assigned as the type species. Description ''Leiorreuma'' ...

'' * '' Leiorreuma vicarians'' * '' Leiorreuma yakushimense'' – Japan

References

Graphidaceae Lichen genera Graphidales genera Taxa described in 1824 Taxa named by Franz Gerhard Eschweiler {{Lecanoromycetes-stub