''Cryptomarasmius'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

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

in the family

Physalacriaceae The Physalacriaceae are a family of fungi in the order Agaricales. Species in the family have a widespread distribution, ranging from the Arctic, (''Rhizomarasmius''), to the tropics, e.g. ''Gloiocephala'', and from marine sites (''Mycaureola' ...

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 sign ...

''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 Sorbonne, afterwards from 1921 until 1932, he was worki ...

(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. Caps typically have a visor, or no brim at all. They are popular in casual and informal se ...

with a layer of broom cells. The

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( ...

is ''

Cryptomarasmius corbariensis ''Cryptomarasmius'' is a genus of fungi in the family Physalacriaceae. Taxonomy The genus covers species formerly placed in ''Marasmius'', section ''Hygrometrici''. The section ''Hygrometrici'' was described in 1933 by French mycologist Robert ...

'' (formerly ''Marasmius corbariensis'' and originally ''Agaricus androsaceus'' var. ''hygrometricus'', first described in 1852 by

Vincenzo Briganti Vincenzo is an Italian male given name, derived from the Latin name Vincentius (the verb ''vincere'' means to win or to conquer). Notable people with the name include: Art *Vincenzo Amato (born 1966), Italian actor and sculptor *Vincenzo Bell ...

). ''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 ''Combinatio nova'', abbreviated ''comb. nov.'' (sometimes ''n. comb.''), is Latin for "new combination". It is used in taxonomic biology literature when a new name is introduced based on a pre-existing name. The term should not to be confused wi ...

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. * Ty ...

specimens that were available for DNA sequencing or study.

References

Agaricales genera Physalacriaceae {{Physalacriaceae-stub