''Rhizomarasmius epidryas'' (
syn. ''Marasmius epidryas'' or ''Mycetinis epidryas'') is one of a group of mushrooms formerly in the genus ''
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, unimpressive ...
''. It grows amongst dwarf shrubs of the genus
''Dryas'' in arctic or
high mountain environments.
[
]
Description
The species can be described as follows:[
*The cap is brownish yellow and grows to about 1 cm in diameter.
*The gills are white and fairly distant, and broadly attached to the stem. The spore powder is white.
*The stem can grow to 4 cm tall by up to 2 mm in diameter, being broader at the apex. It is brown above and blackish brown at the base, with a velvety covering of hairs.
*The smell and taste are not distinctive.
*The spores are roughly ellipsoid or almond-shaped and measure roughly 8.5-10.5 µm x 5-7 µm.
]
Naming and related species
The species epithet is the Ancient Greek prefix "epi-" (ἐπί), meaning "on",[ followed by Dryas, the genus of plants with which it grows.
This species was originally described as ''Marasmius epidryas'' by ]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 working ...
in 1935 in the annals of the Linnaean Society of Lyon, but the definition was considered invalid due to the lack of a Latin description according to the updated nomenclatural rules. In 2009 Anna Ronikier published a correct description ascribing the name to Kühner (that is, giving credit to him) and so the first valid name with author attribution was "''Marasmius epidryas'' Kühner ex A. Ronikier". Then in 2011 Anna & Macheł Ronikier established that the species belongs in the new genus ''Rhizomarasmius
''Rhizomarasmius'' is a genus of fungi in the family Physalacriaceae, containing about five species.
General
The genus was created in 2000 by R. H. Petersen to accommodate two species then classified in Marasmius (''M. pyrrhocephalus'' and ''M. ...
'' and redefined the current name accordingly.[
]
Ecology and distribution
This mushroom is found exclusively in cushions of ''Dryas'' plants such as ''D. octopetala'' (mountain avens) and ''D. integrifolia'' (entire-leaved avens), growing saprobically on dead leaves and stems. It only occurs in arctic or high mountain environments.Rocky
''Rocky'' is a 1976 American sports drama film directed by John G. Avildsen and written by and starring Sylvester Stallone. It is the first installment in the ''Rocky'' franchise and stars Talia Shire, Burt Young, Carl Weathers, and Burgess M ...
and Altai mountains, and various mountain ranges in Europe.[
]
References
{{Taxonbar, from=Q58193715
epidryas
Fungi of Europe