''Cryptomarasmius'' 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 ...

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

Physalacriaceae The Physalacriaceae are a family of 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 mush ...

Taxonomy

The genus covers species formerly placed in ''

Marasmius ''Marasmius'' is a genus of mushroom-forming fungi in the family Marasmiaceae. It contains about 500 species of agarics, of which a few, such as '' Marasmius oreades'', are edible. However, most members of this genus are small, unimpressiv ...

'',

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 ...

''Hygrometrici''. The section ''Hygrometrici'' was described in 1933 by French mycologist

Robert Kühner Robert Kühner (15 March 1903 in Paris – 27 February 1996 in Lyon) was a French mycologist most notable for reviewing many forms of agaric (mushroom fungus) genera. He studied at the University of Paris, Sorbonne, afterwards from 1921 until ...

(as "Hygrometriceae") to contain ''Marasmius'' species that were small with a dark, wiry stipe,

gills A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...

not arranged in a collar around the stipe, and a dark

cap A cap is a flat headgear, usually with a visor. Caps have crowns that fit very close to the head. They made their first appearance as early as 3200 BC. The origin of the word "cap" comes from the Old French word "chapeau" which means "head co ...

with a layer of broom cells. The

type species In International_Code_of_Zoological_Nomenclature, 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 spe ...

is '' Cryptomarasmius corbariensis'' (formerly ''Marasmius corbariensis'' and originally ''Agaricus androsaceus'' var. ''hygrometricus'', first described in 1852 by Vincenzo Briganti). ''Cryptomarasmius'' combines the words ''crypto'' meaning "hidden" and ''Marasmius'', alluding to the historical placement of the species within ''Marasmius'' as well as the often hidden, minute fruit bodies they produce. A more recent studies show ''Cryptomarasmius'' to be a

sister taxon In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and ...

to ''

Naiadolina ''Naiadolina'' is an agaric fungal genus that produces striking, yellowish fruit bodies on sedges (''Scirpus'' and ''Dulichium'') in wetlands in eastern Canada. The lamellae are merulioid, forked and anastomosing. The type species was previously ...

''.

Species

Fourteen species were originally transferred to ''Cryptomarasmius'' from ''Marasmius''. The authors suggest that there are several more that should probably be moved from section ''Hygrometrici'', but they only made

new combination In Taxonomy (biology), biological taxonomy, a combinatio nova (abbreviated comb. nov. or n. comb.) refers to the formal renaming of an organism's scientific name when it is transferred to a different genus, reclassified within a different specie ...

s for those species with

type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * ...

specimens that were available for

DNA sequencing DNA sequencing is the process of determining the nucleic acid sequence – the order of nucleotides in DNA. It includes any method or technology that is used to determine the order of the four bases: adenine, thymine, cytosine, and guanine. The ...

or study.

References

Agaricales genera Physalacriaceae {{Physalacriaceae-stub