''Lepidocollema'' is a genus 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.Pannariaceae The Pannariaceae are a family of lichens in the order Peltigerales (suborder Collematineae). Species from this family have a widespread distribution, but are especially prevalent in southern temperate regions. Genera According to a recent (202 ...

. It 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 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansion of ''Lepidocollema'' to 24 tropical species.

Taxonomay

''Lepidocollema'' was originally

in 1890 by Finnish lichenologist

Edvard August Vainio Edvard August Vainio (born Edvard Lang; 5 August 185314 May 1929) was a Finnish lichenology, lichenologist. His early works on the lichens of Lapland (Finland), Lapland, his three-volume monograph on the lichen genus ''Cladonia'', and, in parti ...

with only the type species, '' L. carassense''. This lichen is a gelatinous ''

Parmeliella ''Parmeliella'' is a genus of lichenized fungi in the family Pannariaceae The Pannariaceae are a family of lichens in the order Peltigerales (suborder Collematineae). Species from this family have a widespread distribution, but are especial ...

''-like species that has a photobiont from the genus ''

Nostoc ''Nostoc'', also known as star jelly, troll’s butter, spit of moon, fallen star, witch's butter (not to be confused with the fungi commonly known as witches' butter), and witch’s jelly, is the most common genus of cyanobacteria found in vari ...

''. It has only been collected once from Brazil. The family Pannariaceae was revised in 2014 with the help of molecular phylogenetics. As a result, the genus was accepted and 23 tropical species were transferred into it, mostly from the genus ''

''. Phylogenetically, ''Lepidocollema'' is sister to ''

Physma ''Physma'' is a genus of cyanolichens in the family Pannariaceae. It has five species. The genus was circumscribed by Italian lichenologist Abramo Bartolommeo Massalongo in 1854, with '' Physma boryanum'' assigned as the type species In zoolo ...

''.

Description

''Lepidocollema'' is characterised by the formation of large, flat rosettes on a thick layer of

rhizohyphae The following is a glossary of terms used in the description of lichens, composite organisms that arise from algae or cyanobacteria living among filaments of multiple fungus species in a mutualistic relationship. Until the end of the 18th cen ...

, the presence of a cellular thalline cortex, apothecia with a thalline margin,

asci ASCI or Asci may refer to: * Advertising Standards Council of India * Asci, the plural of ascus, in fungal anatomy * Accelerated Strategic Computing Initiative * American Society for Clinical Investigation * Argus Sour Crude Index * Association of ...

with a wide apical ring-structure, and thin-walled ascospores. Other than the type species, the thallus is heteromerous in all ''Lepidocollema'' species. This refers to a tissue arrangement whereby the

mycobiont A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.hypha A hypha (; ) is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium. Structure A hypha consists of one or ...

e) and photobionts ( algal cells) are arranged in distinct layers.

Species

*''

Lepidocollema adpressum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema allochroum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema borbonicum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema brisbanense ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema carassense ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema cineratum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema endoluteum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema endomiltum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema exornatum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema fuscatum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema granuliferum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema imbricatulum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema leiostroma ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema macrosporum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema marianum ''Lepidocollema marianum'' is a species of cyanolichen in the family Pannariaceae. It was first scientifically described by Elias Fries in 1825 as ''Parmelia mariana''. Per Magnus Jørgensen transferred it to the genus ''Lepidocollema'' in 20 ...

'' *'' Lepidocollema montanum'' *''

Lepidocollema nitidum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema pannarioides ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema papillatum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema polyphyllinum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema stylophorum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' *''

Lepidocollema wainioi ''Lepidocollema wainioi'' is a species of lichen in the family Pannariaceae. It is known from southeast Asia. Taxonomy This lichen was originally formally described by Finnish lichenologist Edvard August Wainio as ''Pannaria sorediata'', based ...

'' *''

Lepidocollema zeylanicum ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscription (taxonomy), circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updat ...

References

{{Taxonbar, from=Q21220752 Peltigerales Lichen genera Taxa named by Edvard August Vainio Taxa described in 1890 Peltigerales genera