Rhizomarasmius pyrrhocephalus
{{Short description|Species of fungus}}
{{Speciesbox
| image = Rhizomarasmius pyrrhocephalus (Berk.) R.H. Petersen 330892.jpg
| genus = Rhizomarasmius
| species = pyrrhocephalus
| authority = (Berk.) R.H.Petersen (2000)
}}
Rhizomarasmius pyrrhocephalus is a taxon of fungus. It serves as the type species of its genus.
Taxonomy
The genus Rhizomarasmius was split from Marasmius due to morphological differences such as the cystidia and the rooting stipe (hence the prefix rhizo).{{cite journal |last1=Petersen |first1=RH |year=2000 |title=Rhizomarasmius, gen. nov. (Xerulaceae, Agaricales) |journal=Mycotaxon |volume=75 |pages=333–342 |issn=0093-4666}} Rhizomarasmius pyrrhocephalus is the type species.
= Etymology =
The genus name is a combination of the prefix Rhizo, from the Ancient Greek ῥίζα (rhíza, "root"), and the Greek marasmos (μαρασμός; "drying out; withering").{{Cite web |title=Woodhouse's English-Greek Dictionary Page Image |url=https://artflsrv04.uchicago.edu/cgi-bin/efts/sqldbs/WOODHOUSE/woodhouse.py?keyword=Root,+subs.&pagenumber=&sortorder=Keyword |access-date=2024-01-04 |website=artflsrv04.uchicago.edu}}
The specific epithet combines the Ancient Greek pyrrho (πῦρ • pyr; "fire"){{Cite web |title=Woodhouse's English-Greek Dictionary Page Image |url=https://artflsrv04.uchicago.edu/cgi-bin/efts/sqldbs/WOODHOUSE/woodhouse.py?&pagenumber=322&qtype=page |access-date=2024-01-04 |website=artflsrv04.uchicago.edu}} and cephalus ("head").{{Cite web |title=Woodhouse's English-Greek Dictionary Page Image |url=https://artflsrv04.uchicago.edu/cgi-bin/efts/sqldbs/WOODHOUSE/woodhouse.py?&pagenumber=390&qtype=page |access-date=2024-01-04 |website=artflsrv04.uchicago.edu}}
Description
The orange-colored cap is {{Convert|1-2.5|cm|frac=4}} wide. Its rooted black stipe has velvety hairs{{Cite book |last=Bessette |first=Alan E. |title=A Field Guide to Mushrooms of the Carolinas |series=Southern Gateways Guides |last2=Bessette |first2=Arleen R. |last3=Hopping |first3=Michael W. |date=23 February 2018 |publisher=University of North Carolina Press |isbn=978-1-4696-3854-6}} and is up to {{Convert|9|cm|abbr=on|frac=4}} long.{{Cite book |last=Audubon |title=Mushrooms of North America |publisher=Knopf |year=2023 |isbn=978-0-593-31998-7 |pages=452}} It has adnate gills and a white spore print, not unlike Marasmius species.
= Similar species =
It can resemble Marasmius sullivantii, Marasmiellus biformis and M. subnudus.
Distribution and habitat
This mushroom is known mainly from eastern North America, and grows from May to October on leaf litter and wood.
References
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