View source for Panaeolus papilionaceus var. papilionaceus

{{Taxobox 
| color = lightblue
| name = ''Panaeolus papilionaceus var. papilionaceus''
| image = Panaeolus papilionaceus.jpg
| image_width = 395px
| regnum = [[Fungi]]
| phylum = [[Basidiomycota]]
| classis = [[Hymenomycetes]]
| ordo = [[Agaricales]]
| familia = [[Bolbitiaceae]]
| genus = ''[[Panaeolus]]''
| species = '''''P. papilionaceus var. papilionaceus'''''
| binomial = ''Panaeolus papilionaceus var. papilionaceus''
| binomial_authority = ([[Jean Baptiste François Pierre Bulliard|Bull.]] ex [[Elias Magnus Fries|Fries]]) [[Lucien Quélet|Quélet]]
| synonyms = ''Agaricus calosus''<br/>''Agaricus campanulatus''<br/>''Agaricus papilionaceus''<br/>''Galerula campanulata''<br/>''Panaeolus campanulatus''<br/>''Panaeolus retirugis''<br/>''Panaeolus sphinctrinus'' 
}}
{{mycomorphbox 
| name = Panaeolus papilionaceus var. papilionaceus
| whichGills = adnexed
| capShape = convex
| hymeniumType=gills
| stipeCharacter=bare
| ecologicalType=saprophytic
| sporePrintColor=black
| howEdible=unknown}}

'''''Panaeolus papilionaceus var. papilionaceus''''', also known as ''Agaricus calosus'', ''Panaeolus papilionaceus'', ''Panaeolus campanulatus'', ''Panaeolus retirugis'', and ''Panaeolus sphinctrinus'' is a common and widely distributed little brown mushroom.  

This mushroom is the [[type species]] for the genus ''[[Panaeolus]]''.