''Agaricus taeniatus'' is a species of
agaric fungus
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from th ...
.
Described as new to science in 2014, it is found in northwest China, where it grows singly or in scattered groups on
moss
Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hor ...
-covered soil in ''
Picea crassifolia
''Picea crassifolia'', the Qinghai spruce, is a species of conifer in the family Pinaceae. It is found only in China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous count ...
'' forests.
Taxonomy
The
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 ...
collection was made in Haichaoba,
Minle County, China in August 2013 at an altitude of .
Molecular phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...
analysis places the fungus in the
section ''Bivelares'' (subsection ''Hortenses'') of the genus ''
Agaricus''. ''
Agaricus subsubensis
''Agaricus'' is a genus of mushrooms containing both edible and poisonous species, with over 400 members worldwide and possibly again as many disputed or newly-discovered species. The genus includes the common ("button") mushroom (''Agaricus bisp ...
'' was the most closely related species of
congeners included in the analysis. The
specific epithet
In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...
''taeniatus'' alludes to the
partial veil remnants that remain on the surface of the stipe.
Description
The
cap shape is initially roughly hemispherical with a flattened top, then expands to become flattened with a wavy margin, with a size range of . The cap surface is covered with small brownish scales. The gills are free from attachment to the stipe, and spaced so that there are between 13 and 24 gills per cm at the cap margin. They are initially white, later turning light pink, light brown, and then dark brown after the spores mature. The cylindrical stipe measures long. It has a persistent
ring
Ring may refer to:
* Ring (jewellery), a round band, usually made of metal, worn as ornamental jewelry
* To make a sound with a bell, and the sound made by a bell
:(hence) to initiate a telephone connection
Arts, entertainment and media Film and ...
measuring wide. The stipe surface features small, pressed-down scales above the ring, and more fluffy scales below the ring.
are more or less spherical to broadly
ellipsoid
An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation.
An ellipsoid is a quadric surface; that is, a surface that may be defined as the ...
, and measure 5.7–7.1 by 6.8–8.6
µm
The micrometre ( international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is a unit of length in the International System of Unit ...
. They are thick-walled and smooth, and lack a
germ pore.
Habitat and distribution
''Agaricus taeniatus'' is known only from its
type locality in
Gansu
Gansu (, ; alternately romanized as Kansu) is a province in Northwest China. Its capital and largest city is Lanzhou, in the southeast part of the province.
The seventh-largest administrative district by area at , Gansu lies between the Tibet ...
, northwestern China. It fruits scattered or singly on the ground in soil covered in lush moss.
See also
*
List of ''Agaricus'' species
References
{{Taxonbar, from=Q19595789
taeniatus
Fungi described in 2014
Fungi of China