''Placynthium'' 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.fungi in the family

Placynthiaceae The Placynthiaceae are a lichenized family of fungi in the order Peltigerales. Species of this family are found largely in northern temperate regions. Genera Numbers of species accepted by Species Fungorum ''Index Fungorum'' is an internationa ...

. Members of this genus are commonly called blackthread lichens.USDA Natural Resources Conservation Service Name Search
/ref>Blackthread Lichen (Placynthium), Encyclopedia of Life
/ref>

Species

*'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' *'' Placynthium caesium'' *'' Placynthium filiforme'' *''

Placynthium flabellosum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium garovaglii ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

'' *'' Placynthium glaciale'' *''

Placynthium hungaricum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae The Placynthiaceae are a lichenized family of fungi in the order Peltigerales. Species of this family are found largely in northern temperate regions. Genera Numbe ...

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Placynthium lismorense ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium majus ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium nigrum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium pannariellum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium petersii ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium pluriseptatum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium posterulum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium pulvinatum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium subradiatum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium tantaleum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

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Placynthium tremniacum ''Placynthium'' is a genus of lichen-forming fungi in the family Placynthiaceae. Members of this genus are commonly called blackthread lichens. Species *'' Placynthium anemoideum'' *'' Placynthium asperellum'' *'' Placynthium australiense'' * ...

References

Peltigerales Lichen genera Taxa named by Erik Acharius Taxa described in 1810 Peltigerales genera {{Peltigerales-stub