{{Short description|Genus of fungi}} {{Automatic taxobox | image = Hypholoma fasciculare LC0091.jpg | image_caption = ''Hypholoma fasciculare'' | taxon = Hypholoma | authority = (Fr.) P.Kumm. (1871) | type_species = ''Hypholoma fasciculare'' | type_species_authority = (Huds.:Fr.) P.Kumm. (1871) | synonyms_ref = <ref name="urlMycoBank: Hypholoma">{{cite web |url=http://www.mycobank.org/MycoTaxo.aspx?Link=T&Rec=17828 |title=''Hypholoma'' (Fr.) P.Kumm. 1871 |publisher=International Mycological Association |work=MycoBank |accessdate=2010-10-29}}</ref> | synonyms = ''Naematoloma'' <small>P.Karst. (1880)</small> | subdivision_ranks = Species | subdivision = See text }}

'''''Hypholoma''''' is a genus of fungi which are quite well known due to the commonness of sulphur tuft (''Hypholoma fasciculare'') on stumps in temperate woodlands. Species in this genus are easily recognizable because the dark spores create a distinctive greenish effect on the yellow cap underside. ''Hypholoma'' means "mushrooms with threads" because of the thread-like veil that connects the cap to the stem when young and for the bundles of rhizomorphs which radiate outwards from the stem base.<ref>Paul Stamets, [https://books.google.com/books?id=y1fnacRg1AYC&pg=PA334 ''Growing gourmet and medicinal mushrooms''], p. 239, Ten Speed Press, 3rd ed. (2000), {{ISBN|1-58008-175-4}}</ref> Other well-known species are ''H.&nbsp;capnoides'' and ''H.&nbsp;lateritium''.

==Synonyms== Sometimes ''Hypholoma'' has not been considered a genus in its own right, but it has been grouped together with ''Stropharia'' and ''Psilocybe'' under the name of ''Geophila'', ''Naematoloma'', or ''Nematoloma''.

==General characteristics== * The fruiting bodies mostly have a central stipe. Some are medium-sized and there are also smaller species. The caps range in colour from yellow/brown to brick red.<ref name=":0">{{Cite book |last=Miller |first=Orson K. |url=http://archive.org/details/northamericanmus0000mill |title=North American mushrooms : a field guide to edible and inedible fungi |date=2006 |publisher=Guilford, Conn. : Falcon Guide |others=Internet Archive |isbn=978-0-7627-3109-1 |pages=240 |access-date=2026-01-27}}</ref><ref name=":1">{{Cite book |last=Trudell |first=Steve |url=http://archive.org/details/mushroomsofpacif0000trud |title=Mushrooms of the Pacific Northwest |date=2009 |publisher=Portland, Or. : Timber Press |others=Internet Archive |isbn=978-0-88192-935-5 |pages=205 |access-date=2026-01-27}}</ref> * The spore colour is dark brown to black.<ref name=":0" /><ref name=":1" /> * The cap is smooth.<ref name=":0" /><ref name=":1" /> * The developing mushroom is enveloped in a veil, but in ''Hypholoma'' this can be seen only in very young examples. This means that there is no well-defined ring, and nor are there distinctive flakes on the cap, but there may be cottony ring zones on the stipe, sometimes coloured by the dark spores.<ref name=":0" /><ref name=":1" /> * The genus is widespread throughout the world and its best known representatives grow on dead wood, whilst some others grow in moss, sometimes on moors.<ref name=":1" />

==Species== {{div col|colwidth=30em}} *''H. acutum'' *''H. aporum'' *''H. australe'' *''H. australianum'' *''H. brunneum'' *''H. californicum'' *20px&nbsp;''H. capnoides'' *''H. castilloi'' *''H. confusum'' *''H. dispersum'' *''H. elongatum'' *''H. epixanthum'' *''H. ericaeoides'' *''H. ericaeum'' *''H. eximium'' *20px&nbsp;''H. fasciculare'' *''H. flavorhizum'' *''H. flavovirens'' *''H. fragile'' *''H. frowardii'' *''H. laeticolor'' *20px&nbsp;''H. lateritium'' *''H. litorale'' *''H. marginatum'' *''H. murinacea'' *''H. myosotis'' *''H. ornellum'' *''H. peckianum'' *''H. peregrinum'' *''H. perplexum'' *''H. polylepidis'' *''H. polytrichi'' *''H. popperianum'' *''H. puiggarii'' *''H. radicosoides'' *''H. radicosum'' *''H. rickenii'' *''H. rubrococcineum'' *''H. solitarium'' *''H. subdispersum'' *''H. subericaeum'' *''H. subviride'' *''H. vinosum'' *''H. xanthocephalum'' {{div col end}}

==Gallery== <gallery> Image:Hypholoma capnoides.jpg|''Hypholoma capnoides'' File:Hypholoma fasciculare 040926w.jpg|''Hypholoma fasciculare'' File:Hypholoma fasciculare (1).JPG|''Hypholoma fasciculare'' File:Hypholoma.radicosum.-.lindsey.jpg|''Hypholoma radicosum'' Zwafelkop (Hypholoma), 22-11-2023. (d.j.b).jpg| ''Hypholoma'' in a deep hole in the crotch of a trunk of an Alder (''Alnus''). </gallery>

==See also== *List of Agaricales genera

==References== {{Reflist}}

{{Taxonbar|from=Q371793}} {{Authority control}}

Category:Hypholoma Category:Agaricales genera Category:Taxa named by Elias Magnus Fries