Sphagnurus paluster

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Sphagnurus paluster
Tephrocybe.palustris.-.lindsey.jpg
Brown when moist
Scientific classification
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Species:
S. paluster
Binomial name
Sphagnurus paluster
(Peck) Redhead & V. Hofstetter 2014
Synonyms

Agaricus palustris Peck 1872
Mycena palustris (Peck) Sacc. 1887
Tephrophana palustris (Peck) Kühner 1938
Lyophyllum palustre (Peck) Singer 1943
Tephrocybe palustris (Peck) Donk 1962
Bryophyllum palustre (Peck) Vizzini 2014

Contents

Sphagnurus paluster
Information icon.svg
Gills icon.png Gills on hymenium
Conical cap icon.svgFlat cap icon.svg Cap is conical or flat
Adnate gills icon2.svgSinuate gills icon2.svg Hymenium is adnate or sinuate
Bare stipe icon.svg Stipe is bare
Transparent spore print icon.svg
Spore print is white
Parasitic fungus.svgEcology is parasitic
Mycomorphbox Question.pngEdibility is unknown

Sphagnurus paluster is a species of fungus in the family Lyophyllaceae which parasitizes Sphagnum moss. It was first described by Charles Horton Peck in 1872. It is commonly called the sphagnum greyling due to it being found in peat bogs and to its cap turning grey as it ages and dries.

Description

Sphagnurus paluster can be white pruinose when young and does not stain or bruise when crushed. Its flesh is thin, soft, and watery. The cap is 1 to 3 centimetres (0.39 to 1.2 in) in diameter, starting as conical or bell shape when young, expanding flat with a distinct umbo when older. It is smooth, striate, and hygrophanous; usually an olive-brown when moist, drying to a pale grey color. The white to grey gills are adnate or with a slight tooth. Subgills are often present creating a close to subdistant spacing. The stem is 2 to 10 centimetres (0.79 to 3.9 in) long and 1 to 5 mm (0.039 to 0.20 in) in diameter, equal and hollow. The coloring is usually lighter than the cap, being grey-brown or grey. The white to cream colored spores are 5.5 to 8.5 µm x 4 to 4.5 µm, elliptical, and smooth. [1] [2] This mushroom may have a farinaceous odor when fresh.

Distribution and habitat

Grows in spring to early summer in cool northern climates that support Sphagnum . Found single to gregarious, often growing in bogs or ditches always on Sphagnum.

Parasitism

Sphagnurus paluster parasitizes living Sphagnum mosses by forming penetration pegs through hyphae pressure. At the tips of these pegs pectinases are produced to digest the lamella between leaf cells which facilitates entry into both hyaline and chlorophyllous cells. The result is a deterioration of the protoplast and necrosis of the cells. The rate of parasitic expansion is theorized to be related to the amount of available nitrogen in the host and parasite mediums. [3]

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Sphagnurus is a parasitic mushroom genus in the family Lyophyllaceae that creates conspicuous dead patches on peat moss (Sphagnum) in bogs. The genus contains one species known to inhabit Eurasia and North America. Phylogenetically the genus is closest to, but is isolated from species now classified in the genus Sagaranella Prior to molecular analyses, the most recent classification put it in the genus Tephrocybe, but that genus is allied to Termitomyces.

References

  1. Gibson, Ian. "LYOPHYLLUM and Allies in the Pacific Northwest". Pacific Northwest Key Council. Retrieved 17 May 2011.
  2. "Lyophyllum palustre". Rogers Mushrooms. Retrieved 15 May 2011.
  3. Davey ML, Currah RS: Interactions between mosses (Bryophyta) and fungi. Can J Bot 2006, 84:1509-1519