Rhizomarasmius

Rhizomarasmius is a genus of fungi in the family Physalacriaceae, containing about five species.[3]

Rhizomarasmius
Rhizomarasmius pyrrhocephalus
Scientific classification
Kingdom:
Fungi
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Agaricales
Family:
Physalacriaceae
Genus:
Rhizomarasmius

Type species
Rhizomarasmius pyrrhocephalus
(Berk.) R.H.Petersen (2000)
Species

General

The genus was created in 2000 by R. H. Petersen to accommodate two species then classified in Marasmius (M. pyrrhocephalus and M. undatus), but which do not belong there due to morphological grounds, including the nature of the cystidia and the way the mushrooms are rooted on a plant substrate. This analysis was backed up in 2006 by DNA comparisons done by Wilson and Desjardin.[4][2][5]

Unlike most Marasmius mushrooms, members of Rhizomarasmius grow on the rhizomes of ferns or flowering plants, and that is the signification of the genus name. Instead of the Marasmiaceae this genus is placed in the Physalacriaceae, a sister clade but a separate family.[4]

Species
ImageNameNotesDistribution
R. epidryasArctic, Altai Mountains & mountains in Europe & N. America
R. oreinus
R. pyrrhocephalusType speciesN. America
R. setosus= Marasmius setosus, Marasmius recubansEurope
R. undatusEurope, N. America, Altai Mountains
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See also

References
  1. Ronikier M, Ronikier A (2011). "Rhizomarasmius epidryas (Physalacriaceae): phylogenetic placement of an arctic-alpine fungus with obligate saprobic affinity to Dryas spp". Mycologia. 103 (5): 1124–1132. doi:10.3852/11-018. PMID 21482630.
  2. Petersen RH. (2000). "Rhizomarasmius, gen. nov. (Xerulaceae, Agaricales)". Mycotaxon. 75: 333–342.
  3. Moreau PA, Vila J, Aime MC, Antonín V, Horak E, Pérez-Butrón JL, Richard F, Urban A, Welti S, Vizzini A (2015). "Cibaomyces and Cyptotrama, two new genera for Europe, and an emendation of Rhizomarasmius (Basidiomycota, Physalacriaceae)". Mycological Progress. 14 (2). doi:10.1007/s11557-015-1024-4.
  4. Antonín, V.; Noordeloos, M. E. (2010). A monograph of marasmioid and collybioid fungi in Europe. Postfach 1119, 83471 Berchtesgaden, Germany: IHW Verlag. pp. 427–430. ISBN 978-3-930167-72-2.CS1 maint: location (link)
  5. Wilson A, Desjardin D (2005). "Phylogenetic relationships in the gymnopoid and marasmioid fungi (Basidiomycetes, euagarics clade)". Mycologia. 97 (3): 667–679. doi:10.3852/mycologia.97.3.667.


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