Panaeolus papilionaceus var. papilionaceus

Taxobox
name = "Panaeolus papilionaceus var. papilionaceus"

---

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 = (Bull. ex Fries) Quélet
synonyms = "Agaricus calosus" "Agaricus campanulatus" "Agaricus papilionaceus" "Galerula campanulata" "Panaeolus campanulatus" "Panaeolus retirugis" "Panaeolus sphinctrinus" mycomorphbox
name = Panaeolus papilionaceus var. papilionaceus
whichGills = adnexed
capShape = convex
hymeniumType=gills
stipeCharacter=bare
ecologicalType=saprotrophic
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".

Description

*Cap: 1-5 cm across, obtusely conic, grayish brown, not hygrophanous, becoming campanulate in age, margin adorned with white toothlike partial veil fragments when young, flesh thin.
*Gills: adnate to close to crowded, one or two tiers of intermediate gills, pale gray, acquiring a mottled, blackish appearance in age, with whitish edges.
*Spores: 12-18 x 7-10 µm, elliptical, smooth, with an apical pore, spore print black.
*Stipe: 6-12 cm by 2-4 mm, gray-brown, darker where handled, paler toward the apex, fibrous and .
*Odor: Mild.
*Taste: Unappetizing.
*Microscopic features: Basidia 4-sterigmate; abruptly clavate. Cheilocystidia abundant; subcylindric, often subcapitate or capitate.

Does not contain Psilocybin however several very similar looking Panaeolus species have small amounts.

Habitat and formation

Singly or in small groups on cow/horse dung and in pastures, widely distributed in North America, spring, summer, and fall and through the winter in warmer climates.

External links

* [http://www.mushroomexpert.com/panaeolus_papilionaceus.html Mushroom Expert - "Panaeolus papilionaceus"]
* [http://www.mykoweb.com/CAF/species/Panaeolus_papilionaceus.html Mykoweb - "Panaeolus papilionaceus"]
* [http://mushroomobserver.org/observer/show_image/4293 Mushroom Observer - "Panaeolus papilionaceus"]
* [http://mushroomobserver.org/2895 Mushroom Observer - "Panaeolus papilionaceus"]
* [http://mushroomobserver.org/2618 Mushroom Observer - "Panaeolus papilionaceus"]
* [http://mushroomobserver.org/2580 Mushroom Observer - "Panaeolus papilionaceus"]
* [http://mushroomobserver.org/3227 Mushroom Observer - "Panaeolus papilionaceus"]