genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
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 ...
by German mycologist
Christiaan Hendrik Persoon
Christiaan Hendrik Persoon (1 February 1761 – 16 November 1836) was a German mycologist who made additions to Linnaeus' mushroom taxonomy.
Early life
Persoon was born in South Africa at the Cape of Good Hope, the third child of an immig ...
in 1794. Although Persoon did not designate a
type species
In 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 species that contains the biological type specimen ...
in his original description of the genus,
Frederick Clements Frederick may refer to:
People
* Frederick (given name), the name
Nobility
Anhalt-Harzgerode
*Frederick, Prince of Anhalt-Harzgerode (1613–1670)
Austria
* Frederick I, Duke of Austria (Babenberg), Duke of Austria from 1195 to 1198
* Frederi ...
and
Cornelius Lott Shear Cornelius Lott Shear (1865–1956) was an American mycologist and plant pathologist. In 1908 he created the American Phytopathological Society. He was the first to describe the grass ''Bromus arizonicus
''Bromus arizonicus'' is a species of br ...
Species Fungorum
''Index Fungorum'' is an international project to index all formal names (scientific names) in the fungus kingdom. the project is based at the Royal Botanic Gardens, Kew, one of three partners along with Landcare Research and the Institute of Mi ...
(in the
Catalogue of Life
The Catalogue of Life is an online database that provides an index of known species of animals, plants, fungi, and microorganisms. It was created in 2001 as a partnership between the global Species 2000 and the American Integrated Taxonomic Info ...