''Lepraria'' is a genus of leprose crustose

lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.substrate Substrate may refer to: Physical layers *Substrate (biology), the natural environment in which an organism lives, or the surface or medium on which an organism grows or is attached ** Substrate (locomotion), the surface over which an organism lo ...

like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes on the type species of the genus L. incana, James C. Lendemer , Mycologia 103(6): 1216-1229

/ref> Members of the genus are List of lichen common names and their genera, commonly called dust lichens.Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, Dust Lichen (Lepraria), Encyclopedia of Life
/ref>USDA Natural Resources Conservation Service Name Search
/ref> The main vegetative body ( thallus) is made of patches of soredia (little balls of algae wrapped in fungus). There are no known mechanisms for sexual reproduction, yet members of the genus continue to speciate. Some species can form marginal lobes and appear

squamulose A squamulose lichen is a lichen that is composed of small, often overlapping "scales" called squamules. If they are raised from the substrate and appear leafy, the lichen may appear to be a foliose lichen, but the underside does not have a "skin ...

. Because of the morphological simplicity of the thallus and the absence of sexual structures, the composition of lichen products (i.e., secondary metabolites made by lichens) are important characters to distinguish between similar species in ''Lepraria''.

Taxonomy

''Lepraria'' 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 1803 by Swedish lichenologist Erik Acharius.

Jack Laundon Jack Rodney Laundon (28 July 1934 – 31 December 2016) was a British lichenologist and became President of the British Lichen Society. Education and personal life Jack Rodney Laundon was born 28 July 1934 in Kettering, Northamptonshire. He was ...

assigned ''

Lepraria incana ''Lepraria incana'' is a species of dust lichen in the family Stereocaulaceae. First described scientifically by Johann Jacob Dillenius in 1741, and then formally by Carl Linnaeus in 1753, it is the type species of the genus ''Lepraria''. T ...

'' as the type species of the genus in 1992. It is in the family Stereocaulaceae.

Species

*''

Lepraria achariana ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with note ...

'' – South America *''

Lepraria alba ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with note ...

'' *''

Lepraria albicans ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with note ...

'' *'' Lepraria alpina'' *'' Lepraria alternata'' – Australia *''

Lepraria arbuscula ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *'' Lepraria atlantica'' *''

Lepraria atrotomentosa ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria aurescens ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' – Thailand *''

Lepraria barbatica ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with note ...

'' *'' Lepraria bergensis'' *''

Lepraria borealis ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *'' Lepraria brasiliensis'' *''

Lepraria brodoi ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' – North America *'' Lepraria cacuminum'' *''

Lepraria caesiella ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria caesioalba ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *'' Lepraria celata'' *''

Lepraria chileana ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with note ...

'' – Chile *'' Lepraria congesta'' *''

Lepraria crassissima ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria cryophila ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria cryptovouauxii ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria cupressicola ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria dibenzofuranica ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' – Australia *''

Lepraria diffusa ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with note ...

'' *'' Lepraria disjuncta'' *'' Lepraria ecorticata'' *''

Lepraria elobata ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria friabilis ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *'' Lepraria gelida'' *''

Lepraria glaucosorediata ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria goughensis ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria gracilescens ''Lepraria'' is a genus of leprose crustose lichens that grows on its substrate like patches of granular, caked up, mealy dust grains.A taxonomic revision of the North American species of Lepraria s.l. that produce divaricatic acid, with notes ...

'' *''

Lepraria granulata ''Lepraria granulata'' is a species of crustose and leprose lichen in the family Stereocaulaceae. It is found in mountainous locations of Eastern and Central Europe, where it usually grows over moss. Taxonomy ''Lepraria granulata'' was form ...

'' – Eastern and Central Europe *'' Lepraria granulosa'' *''

Lepraria harrisiana ''Lepraria harrisiana'' is a species of leprose lichen in the family Stereocaulaceae. It is widespread in the eastern United States where it occurs in humid habitats, such as conifer swamps and riparian forests. Taxonomy It was formally d ...

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Lepraria hodkinsoniana