Mica Cap

(Coprinellus micaceus)

               
Conservation Status

IUCN Red List

not yet assessed

Mica Cap

NatureServe

not listed

Minnesota

not listed

Occurrence

Widespread and very common

Season

April through October

Habitat/Hosts

Hardwood and mixed forests and woodlands, suburbs, urban areas


Identification

This is a very common and very widespread mushroom. It has been collected in Europe, Asia, Africa, and North and South America. In the United States has been seen from coast to coast. It occurs from April through October in hardwood and mixed forests and woodlands. It grows in dense clusters usually on decaying hardwood stumps, logs, and woody debris, sometimes on the ground growing on buried wood. It obtains its nutrients from already decaying hardwood (saprobic), especially bark.

The cap when young is oval, tan to yellowish brown or tawny, and darkest in the center. It is narrowly grooved (striate) at least half way to the margin. It is covered with minute, loosely-attached, whitish, glistening particles. The particles are remnants of an egg-like structure (universal veil) that protected the newly emerging mushroom. The particles soon wash away with rain or dew and the cap first becomes bell-shaped then flattens out. The mature cap is ¾ to 2 in diameter and grayish, especially toward the margin. As it ages the margins dissolve progressively inward into black ink at that drips to the ground.

The gills are pale at first and crowded. They may be broadly attached to the stalk (adnate), narrowly attached (adnexed), or not attached (free). As they mature they turn gray or brownish, then ultimately black. As they release their spores they self-digest, turning into black ink at that drips to the ground.

The stalk is white, smooth, hollow, and fragile, It is usually 1¾ to 3 long and 1 16 to ¼ in diameter. Large individuals may be up to 4¾ tall.

The flesh is soft and white or pale. It is edible but thin and watery.

The spores are black.

 
Similar
Species

 


Distribution Distribution Map  

Sources: 4, 7, 24, 29, 30, 77.


Comments

Taxonomy
This mushroom was originally classified in 1786 as Agaricus micaceus. In 1838 it was reclassified as Coprinus micaceus. In 2001 that genus was split and it became Coprinellus micaceus.


Taxonomy

Division:

Basidiomycota (club fungi)

 

Subdivision:

Agaricomycotina (jelly fungi, yeasts, and mushrooms)

 

Class:

Agaricomycetes (mushroom-forming fungi)

 

Subclass:

Agaricomycetidae

 

Order:

Agaricales (gill mushrooms)

 

Family:

Psathyrellaceae

 
Synonyms

Agaricus micaceus

Coprinus micaceus

 
Common
Names

Glistening Inky Cap

Mica Cap


 

 

 

 

 

Glossary

Saprobic

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

 

Striate

Striped or grooved in parallel lines (striae).

 

Universal veil

An egg-like structure that envelopes all or most of a developing gill mushroom. Remnants of the universal veil sometimes visible on a mature mushroom are patchy warts on the cap, a ring on the stem, and a volva at the base of the stem.

       

Visitor Photos

   
Share your photo of this fungi or lichen.

Savannah Hanson


Found in my backyard!

  Mica Cap    

Alissa


  Mica Cap   Mica Cap

Stephanie Segner


Mica Cap or Coprinus micaceus or common inky cap. I found these in several places this season but these pictures were in my yard growing on a stump we pulled up last fall.

  Mica Cap   Mica Cap
       
  Mica Cap    

       
       
       

MinnesotaSeasons.com Photos

   

Cluster

  Mica Cap   Mica Cap
       

Mushroom

  Mica Cap    
       

Cap

  Mica Cap   Mica Cap
       

Gills

  Mica Cap   Mica Cap
       

Partially autodigested

  Mica Cap    
       
       

 

Camera

     

Slideshows

   
  Mica Cap (Coprinellus micaceus)
Bill Keim
 
  Mica Cap (Coprinellus micaceus)  

 

slideshow

     

Visitor Videos

   
Share your video of this fungi or lichen.

     
     

Other Videos

 
  On Mica Caps
The Richest Fare
 
   
 
About

Published on Mar 26, 2016

An overview of the mica cap mushroom as a wild edible.

Go to therichestfare.com for more about real food, healthy living and spiritual encouragement.

 
     
  Mica Cap Mushroom Identification - Morel Season Mushrooms
MiWilderness
 
   
 
About

Published on May 18, 2014

Thanks for watching MiWilderness.

 
     
  Coprinellus micaceus AKA Mica Cap Mushrooms Video/Daily Video V log while Mushroom Hunting
Walt Reven Jr
 
   
 
About

Published on Sep 24, 2017

Found in northwest arkansas in late july under a dead oak tree. Not much more to say, enjoy the video everyone :)

 
     
  Coprinellus micaceus, the mica cap. 4/9/11 in Shoreline, WA, USA.
Cyanescentinel
 
   
 
About

Published on Apr 9, 2011

Coprinellus micaceus, the mica cap. 4/9/11 in Shoreline, WA, USA.

http://www.mushroomexpert.com/coprinellus_micaceus.html

 
     

 

Camcorder

         

Visitor Sightings

   
Share your sighting of this fungi or lichen.

Savannah Hanson
9/21/2018

Location: St. Paul, MN

Found in my backyard!

Mica Cap


Alissa
9/6/2018

Location: Fillmore County

Mica Cap


Stephanie Segner
6/10/2018

Location: Hennepin County, MN

Mica Cap or Coprinus micaceus or common inky cap. I found these in several places this season but these pictures were in my yard growing on a stump we pulled up last fall.

Mica Cap


     
     
 

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