Inky Mushroom

(Agaricus moelleri)

Conservation Status
Inky Mushroom
  IUCN Red List

not listed

     
  NatureServe

not listed

     
  Minnesota

not listed

     
           
           
           
 
Description
 
 

Inky Mushroom is a widespread but not common mushroom easily recognized by it’s flat cap with blackish-brown fibers and scales. It is found either singly or in groups or clusters. It obtains its nutrients from decaying organic matter (saprobic). It appears in the summer and fall.

The cap when young is whitish, smooth, dry, 2 to 4¾ in diameter, and convex to broadly convex. In wet weather it appears pinkish. It is covered with blackish-brown or grayish-brown scales and fibers, densely in the center becoming less as it approaches the margin. As it matures the cap becomes nearly flat.

The gills are crowded and free, not attached to the stalk. They are light pink at first and remain light pink as they mature. Eventually they turn brown with age.

The stalk is white, smooth, solid or hollow, 2 to 6 tall, and to in diameter. It is slightly enlarged at the base. Toward the top of the stalk, below the cap and gills, is a large membranous ring. This is the remnant of a protective covering (inner veil) of the developing gills.

The flesh is white, turning yellow when bruised.

The spore print is brown.

It has a disagreeable odor that has been compared to coal tar.

It is poisonous, not edible.

 
     
 

Similar Species

 
     
     
 
Habitat and Hosts
 
 

On the ground under hardwood trees in deciduous and mixed forests.

 
     
 
Ecology
 
 

Season

 
 

July to October

 
     
 
Distribution
 
 

Distribution Map

 

Sources

4, 7, 24, 26, 29, 30, 77.

 
  7/5/2018      
         
 

Occurrence

 
 

Widespread but not common

 
         
 
Taxonomy
 
  Kingdom Fungi (fungi)  
  Subkingdom Dikarya  
  Division Basidiomycota (club fungi)  
  Subdivision Agaricomycotina (jelly fungi, yeasts, and mushrooms)  
  Class Agaricomycetes (mushroom-forming fungi)  
  Subclass Agaricomycetidae  
  Order Agaricales (common gilled mushrooms and allies)  
  Suborder Suborder Agaricineae  
  Family Agaricaceae (field mushrooms and allies)  
  Genus Agaricus (field and button mushrooms)  
  Subgenus Pseudochitonia  
  Section Xanthodermatei  
       
 

This mushroom was formerly classified as Agaricus placomyces. In some treatments, Agaricus praeclaresquamosus, a similar mushroom found west of the Rocky Mountains, is included in this species.

 
       
 

Synonyms

 
 

Agaricus meleagris

Agaricus placomyces

Fungus placomyces

Psalliota placomyces

 
       
 

Common Names

 
 

Eastern Flat-topped Agaricus

Flat Top

Flat-topped Agaricus

Inky Agaricus

Inky Mushroom

 
       

 

 

 

 

 

Glossary

Saprobic

Obtaining its nutrients from non-living organic matter, such as decaying plant or animal matter.

       
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Stephanie Segner
       

They can cause bad gastro intestinal symptoms in some and no symptoms in others. The larger ones were approximately 5 inches tall and the caps were 2.5 - 3 inches in diameter. They had dropped dark brown or purplish spores. Partial veil showing with straight stem and not bulbous at the bottom.

  Inky Mushroom   Inky Mushroom
       
  Inky Mushroom   Inky Mushroom
       
Jenna Walker
       
  Inky Mushroom   Inky Mushroom
       
  Inky Mushroom    
       
MinnesotaSeasons.com Photos
   

Cluster

  Inky Mushroom   Inky Mushroom
       
  Inky Mushroom   Inky Mushroom
       
  Inky Mushroom    
       

Gills

  Inky Mushroom    
       
       

 

Camera

     
Slideshows
   
  Agaricus moelleri - fungi kingdom
Fungi Kingdom
 
   
 
About

Published on Jan 23, 2015

Agaricus moelleri - fungi kingdom

 
     

 

slideshow

       
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Other Videos
 
  Agaricus moelleri
Κώστας Μαυροματάκης
 
   
 
About

Published on Oct 6, 2015

Agaricus moelleri, also known as the inky mushroom, or dark scaled mushroom, is a large mushroom of the genus Agaricus.

edibility: poisonous

   
       

 

Camcorder

         
Visitor Sightings
   

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Stephanie Segner
6/28/2018

Location: Baker Park in Maple Plain, MN

They can cause bad gastro intestinal symptoms in some and no symptoms in others. The larger ones were approximately 5 inches tall and the caps were 2.5 - 3 inches in diameter. They had dropped dark brown or purplish spores. Partial veil showing with straight stem and not bulbous at the bottom.

Inky Mushroom


Jenna Walker
7/13/2016

 

Inky Mushroom


     
     
 
MinnesotaSeasons.com Sightings
         

 

 

Binoculars


Created: 7/14/2016

Last Updated:

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