Indigo Milk Cap

(Lactarius indigo)

Conservation Status
Indigo Milk Cap
 
  IUCN Red List

not listed

 
  NatureServe

not listed

 
  Minnesota

not listed

 
           
           
           
 
Description
 
 

Indigo Milk Cap is a widespread but uncommon, distinctively colored mushroom. In the summer and fall it can be found on the ground alone, scattered, or in groups, in oak and pine woodlands. It grows on the roots of hardwoods, including oak, ironwood, and blue beech; and pines.

When young the cap is convex or depressed at the center and the margin is rolled inward. It is deep blue or medium blue and often has concentric rings of color. It is smooth, dry, and 2 to 6 in diameter. It is sticky or slimy when wet and exudes a bright dark blue latex or “milk” when cut. The latex eventually turns dark green when exposed to air. As the cap ages it becomes flat or vase-shaped, the color fades to silvery-blue, and it may develop greenish stains.

The flesh is whitish-blue. It stains blue when it is cut, then slowly turns green. It is edible and tastes mild to slightly bitter.

The gills are bright dark blue when young, becoming pale as they age, then yellowish at maturity. They are closely spaced and widely attached to the stem, slightly running down the stem on mature mushrooms.

The stem is bright dark blue, silvery-blue, or grayish-blue, rigid, ¾ to 3 long, and ¾ to 1 in diameter. It is slimy when young but soon becomes dry. It often develops irregular pits. It becomes hollow when it ages.

The spore print is creamy yellowish.

 
     
 

Similar Species

 
  Indigo Milk Cap is the only milk cap mushroom that “bleeds blue”.  
     
 
Habitat and Hosts
 
 

Deciduous, mixed, and coniferous forests. On the ground. Hardwoods, including oak, ironwood, and blue beech; and pines.

 
     
 
Biology
 
 

Season

 
 

July to October

 
     
 
Distribution
 
 

Distribution Map

 

Sources

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

 
  9/20/2021      
         
 

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 Russulales  
  Family Russulaceae (milkcaps, brittlegills, and allies)  
  Genus Lactarius (common milkcaps)  
       
 

Subordinate Taxa

 
 

Indigo Milk Cap (Lactarius indigo indigo)

Smaller Indigo Milk Cap (Lactarius indigo diminutivus)

 
       
 

Synonyms

 
 

Agaricus indigo

Lactarius canadensis

 
       
 

Common Names

 
 

Blue Lactarius

Blue Milk Mushroom

Indigo Lactarius

Indigo Milk Cap

 

 

 

 

 

 

 

Glossary

Mycorrhizal

A symbiotic, usually beneficial relationship between a fungus and the tiny rootlets of a plant, usually a tree.

 
 
Visitor Photos
 
           
 

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Lorna

 
 

Only one found among pines.

 
    Indigo Milk Cap   Indigo Milk Cap  
           
    Indigo Milk Cap      
 

Chris McKibben

 
 

only one I could find. Surrounded by pine trees. Not sure on tree species.

  Indigo Milk Cap  
           
    Indigo Milk Cap   Indigo Milk Cap  
 

Joan

 
 

By white pine

 
    Indigo Milk Cap      
 

Mannix family

 
 

Rapidly growing to 4” in diameter approximately 10’ up the bank from the lake’s edge. Mostly conifer and birch forest.

  Indigo Milk Cap  
 

Tammy

 
 

this mushroom is huge and beautiful!

 
    Indigo Milk Cap   Indigo Milk Cap  
 

Murphy

 
 

near pine tree in yard.

 
    Indigo Milk Cap   Indigo Milk Cap  
 

magic mountain mushroom hunters

 
    Indigo Milk Cap      
           
 

near 5 point lake

 
    Indigo Milk Cap   Indigo Milk Cap  
           
 
MinnesotaSeasons.com Photos
 
 

Cap

 
    Indigo Milk Cap   Indigo Milk Cap  
           
    Indigo Milk Cap   Indigo Milk Cap  
           
 

Gills

 
    Indigo Milk Cap      

 

Camera

     
 
Slideshows
 
 
     
     

 

slideshow

       
 
Visitor Videos
 
       
 

Share your video of this fungus.

 
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Other Videos
 
  Lactarius Indigo Mushroom
foxfirevalleyvineyrd
 
   
 
About

Published on Jul 2, 2015

Lactarius Indigo Mushroom also known as Indigo Milk Cap. I found these while cleaning a fence row. I think they are one of the most beautiful and fascinating mushrooms in the woods.

   
  Larry Grand - Lactarius indigo under a log
Bryan Cody
 
   
 
About

Published on May 30, 2014

This video is about Larry Grand - Lactarius indigo under a log

   
  Edible Blue Mushroom: Lactarius Indigo!
David The Good
 
   
 
About

Published on Aug 12, 2015

More on Lactarius indigo, the edible blue mushroom, can be found in the great mushroom foraging books here: http://www.thesurvivalgardener.com/the-best-mushroom-foraging-books/

So - is this blue mushroom edible? Yes! Lactarius indigo (the indigo milk cap), the incredible edible blue mushroom, is a beautiful blue mushroom with a flavor something like a portobello, though the texture is somewhat grainier. Indigo milk caps are a rare wild food found beneath hardwoords. These particular mushrooms were found in the same field of open woods and grass where I've found Lactarius indigo two times in the past. Once you find a patch of indigo milk caps, keep checking back - chances are you'll find them again in the future. Foraging for mushrooms is a great hobby... why not start today?

Caution: Don't eat any wild mushrooms without checking with a local expert! I'm just this guy on YouTube, you know?

For more foraging, wild mushrooms, gardening and homesteading inspiration, visit www.thesurvivalgardener.com.

   
  Lactarius indigo (the indigo milk mushroom) Wild, edible mushroom in Tx
Falcorr
 
   
 
About

Uploaded on Oct 10, 2009

smells like blueberries and taste soo good. they grow only in the woods under oak trees in tx. would go good on alfredo

   
  Lactarius indigo
sporeprints
 
   
 
About

Uploaded on Aug 9, 2011

   

 

Camcorder

 
 
Visitor Sightings
 
           
 

Report a sighting of this fungus.

 
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Simply email us at info@MinnesotaSeasons.com.
Be sure to include a location.
 
  kmjd
10/4/2021

Location: Antonio, MN

 
  Lorna
9/30/2021

Location: Rice County, Lonsdale

Only one found among pines.

Indigo Milk Cap

 
  Chris McKibben
9/19/2021

Location: Ottertail County, South of Frazee

only one I could find. Surrounded by pine trees. Not sure on tree species.

Indigo Milk Cap

 
  Joan
8/30/2020

Location: Hennepin County

By white pine

Indigo Milk Cap

 
  Mannix family
8/29/2020

Location: Sand Lake in the town of Sturgeon Lake MN, Pine County

Rapidly growing to 4” in diameter approximately 10’ up the bank from the lake’s edge. Mostly conifer and birch forest.

Indigo Milk Cap

 
  Joan
10/6/2019

Location: Dayton, MN

By pine trees in my front yard. First time I’ve seen them.

 
  Tammy
9/27/2019

Location: Nisswa, MN

this mushroom is huge and beautiful!

Indigo Milk Cap

 
  Carrie Olson
9/14/2019

Location: Park Rapids MN

Backyard under a spruce tree

 
  Murphy
9/23/2018

Location: Zimmerman MN

near pine tree in yard.

Indigo Milk Cap

 
  Scott Lucas
9/17/2018

Location: Deerwood, MN (Larsen Lake)

 

 
  magic mountain mushroom hunters
8/20/2016

Location: Hackensack, MN

near 5 point lake

Indigo Milk Cap

 
           
 
MinnesotaSeasons.com Sightings
 
   

 

 

Binoculars


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