''Pycnothelia'' 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 ...

lichen A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualism (biology), m ...

-forming

fungi A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...

in the family

Cladoniaceae The Cladoniaceae are a family of lichen-forming fungi in the order Lecanorales, comprising about 560 species distributed amongst 18 genera. This family is one of the largest among lichen-forming fungi and is globally distributed, from Arctic t ...

. ''Pycnothelia'' was promoted to generic status by French naturalist

Léon Jean Marie Dufour Léon Jean Marie (or Jean-Marie Léon) Dufour (10 April 1780, Saint-Sever – 18 April 1865) was a French medical doctor and naturalist. Between 1799 and 1806 he studied medicine in Paris then returned to Saint-Sever in the Landes. He participa ...

in 1821; it was originally

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 ...

Erik Acharius Erik Acharius (10 October 1757 – 14 August 1819) was a Swedish botanist who pioneered the Taxonomy (biology), taxonomy of lichens and is known as the "father of lichenology". Acharius was famously the last pupil of Carl Linnaeus. Life Ac ...

in 1799 as a

section Section, Sectioning, or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially of a chapter, in books and documents ** Section sig ...

of the now-defunct genus ''Cenomyce''.

Species

*''

Pycnothelia caliginosa ''Pycnothelia'' is a genus of lichen-forming fungi in the family Cladoniaceae. ''Pycnothelia'' was promoted to generic status by French naturalist Léon Jean Marie Dufour in 1821; it was originally circumscribed by Erik Acharius in 1799 as a sect ...

'' *''

Pycnothelia mascarena ''Pycnothelia'' is a genus of lichen-forming fungi in the family Cladoniaceae. ''Pycnothelia'' was promoted to generic status by French naturalist Léon Jean Marie Dufour in 1821; it was originally circumscribed by Erik Acharius in 1799 as a sect ...

'' *''

Pycnothelia papillaria ''Pycnothelia'' is a genus of lichen-forming fungi in the family Cladoniaceae. ''Pycnothelia'' was promoted to generic status by French naturalist Léon Jean Marie Dufour in 1821; it was originally circumscription (taxonomy), circumscribed by Eri ...

References

Cladoniaceae Lichen genera Lecanorales genera Taxa described in 1821 Taxa named by Léon Jean Marie Dufour {{Lecanorales-stub