Rhizomarasmius

{{Taxobox

| image = Rhizomarasmius pyrrhocephalus 271034.jpg

| image_width = 240px

| image_caption = Rhizomarasmius pyrrhocephalus

| regnum = Fungi

| divisio = Basidiomycota

| classis = Agaricomycetes

| ordo = Agaricales

| familia = Physalacriaceae

| genus = Rhizomarasmius

| genus_authority = R.H.Petersen (2000)

| type_species = Rhizomarasmius pyrrhocephalus

| type_species_authority = (Berk.) R.H.Petersen (2000)

| subdivision_ranks = Species

| subdivision =

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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. 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.

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.

Species

Image	Name	Notes	Distribution
class="wikitable sortable"
120px	R. epidryas		Arctic, Altai Mountains & mountains in Europe & N. America
	R. oreinus
90px	R. pyrrhocephalus	Type species	N. America
90px	R. setosus	= Marasmius setosus, Marasmius recubans	Europe
120px	R. undatus		Europe, N. America, Altai Mountains

References

{{Reflist|refs=

{{cite book |author1=Antonín, V. |author2=Noordeloos, M. E. |title=A monograph of marasmioid and collybioid fungi in Europe |publisher=IHW Verlag |location=Berchtesgaden, DE |year=2010 |pages=427–430 |isbn=978-3-930167-72-2 }}

{{cite journal |vauthors=Moreau PA, Vila J, Aime MC, Antonín V, Horak E, Pérez-Butrón JL, Richard F, Urban A, Welti S, Vizzini A |title=Cibaomyces and Cyptotrama, two new genera for Europe, and an emendation of Rhizomarasmius (Basidiomycota, Physalacriaceae) |journal=Mycological Progress |year=2015 |volume=14 |issue=2 |page=4 |doi=10.1007/s11557-015-1024-4|bibcode=2015MycPr..14....4M |s2cid=14276031 |hdl=2318/153555 |hdl-access=free }}

{{cite journal |author=Petersen RH. |year=2000 |title=Rhizomarasmius, gen. nov. (Xerulaceae, Agaricales) |journal=Mycotaxon |volume=75 |pages=333–342 |url=http://www.cybertruffle.org.uk/cyberliber/59575/0075/0333.htm}}

{{cite journal |vauthors=Ronikier M, Ronikier A |title=Rhizomarasmius epidryas (Physalacriaceae): phylogenetic placement of an arctic-alpine fungus with obligate saprobic affinity to Dryas spp |journal=Mycologia |year=2011 |volume=103 |issue=5 |pages=1124–1132 |doi=10.3852/11-018|pmid=21482630 |s2cid=42900871 }}

{{cite journal |vauthors=Wilson A, Desjardin D |year=2005 |title=Phylogenetic relationships in the gymnopoid and marasmioid fungi (Basidiomycetes, euagarics clade). |journal=Mycologia |volume=97 |issue=3 |pages=667–679 |url=https://www.researchgate.net/publication/7379691 |doi=10.3852/mycologia.97.3.667 |pmid=16392255 }}

}}

Category:Agaricales genera

Category:Physalacriaceae

Category:Taxa named by Ron Petersen

Rhizomarasmius

General

Species

See also

References