{{Short description|Species of fungus}} {{Speciesbox | image = Hydnum rufescens 20070927w.JPG | genus = Hydnum | species = rufescens | authority = Pers. (1800) }}

'''''Hydnum rufescens''''', commonly known as the '''terracotta hedgehog''', is an edible basidiomycete of the family Hydnaceae. It belongs to the small group of mushrooms often referred to as the tooth fungi, which produce fruit bodies whose cap undersurfaces are covered by hymenophores resembling spines or teeth, and not pores or gills.

It is very similar to the more common hedgehog fungus (''Hydnum repandum''), and was previously sometimes considered a variety of that species. However, the following differences have been noted:<ref>Roger Phillips: ''Mushrooms and other fungi of Great Britain & Europe'' (1981), Pan Books Ltd, London.</ref><ref name="Courtecuisse">Courtecuisse, R. & Duhem, B. (1994) "Guide des champignons de France et d'Europe" Delachaux et Niestlé {{ISBN|2-603-00953-2}}, also available in English.</ref>

*the cap of ''H. rufescens'' is russet rather than beige, *the overall dimensions are smaller and more regular in shape, with a central stipe, *the spines are not decurrent, and *the spores are slightly larger.

Both species are found in European coniferous and deciduous forests growing on soil. It is reportedly ectomycorrhizal with ''Picea abies'', ''Pinus sylvestris'', ''Fagus sylvatica'' and ''Quercus robur''.<ref>{{cite web | title=''Hydnum rufescens'' | publisher=The Ecology of Commanster | url=http://popgen.unimaas.nl/~jlindsey/commanster/Mushrooms/Basidio/SuBasidio/Hydnum.rufescens.html | accessdate=September 1, 2008 | archive-url=https://web.archive.org/web/20080509061208/http://popgen.unimaas.nl/~jlindsey/commanster/Mushrooms/Basidio/SuBasidio/Hydnum.rufescens.html | archive-date=May 9, 2008 | url-status=dead }}</ref>

== References == {{Reflist}} *[http://www.nifg.org.uk/species/atlas2.htm?item=NBNSYS0000020803 ''Hydnum rufescens''] {{Webarchive|url=https://web.archive.org/web/20160303182828/http://www.nifg.org.uk/species/atlas2.htm?item=NBNSYS0000020803 |date=2016-03-03 }} at Northern Ireland Fungus Group URL accessed 11 June 2007

*{{Commons category-inline|Hydnum rufescens}}

{{Taxonbar|from=Q2475470}}

Category:Edible fungi Category:Fungi described in 1800 Category:Fungi of Europe Category:Taxa named by Christiaan Hendrik Persoon rufescens Category:Fungus species

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