View source for Panaeolus acuminatus

{{Taxobox 
| color = lightblue
| name = ''Panaeolus acuminatus''
| image = Panaeolus_acuminatus.jpg
| regnum = [[Fungi]]
| phylum = [[Basidiomycota]]
| classis = [[Hymenomycetes]]
| ordo = [[Agaricales]]
| familia = [[Bolbitiaceae]]
| genus = ''[[Panaeolus]]''
| species = '''''P. acuminatus'''''
| binomial = ''Panaeolus acuminatus''
| binomial_authority = ([[Jacob Christian Schäffer|Schaeffer]]) [[Lucien Quélet|Quélet]] 1874 
| synonyms = ''Panaeolus rickenii''
}}
{{mycomorphbox 
| name = Panaeolus acuminatus
| whichGills = adnexed
| capShape = convex
| hymeniumType=gills
| stipeCharacter=bare
| ecologicalType=saprophytic
| sporePrintColor=black
| howEdible=unknown
}}
'''''Panaeolus acuminatus''''', also known as ''Panaeolus rickenii'' is a common little brown [[mushroom]].

This species contains small amounts of [[serotonin]], [[5-HTP]], and [[tryptophan]].