Suede Bolete

(Xerocomus subtomentosus)

Conservation Status
Suede Bolete
Photo by Paul
  IUCN Red List

not listed

 
  NatureServe

NNR - Unranked

 
  Minnesota

not listed

 
           
           
           
           
 
Description
 
 

Suede Bolete is a nondescript, brown, medium-sized mushroom. It occurs in Europe, Asia, eastern Australia, and North America. In the United States it occurs east of the Great Plains and west of the Rocky Mountains. It is uncommon in Minnesota where it reaches the western extent of its eastern range. It is found in summer and fall alone, scattered, or in groups but not clustered (gregarious). It grows on the ground under or near hardwood and conifer trees. It is ectomycorrhizal, obtaining its nutrients from the rootlets of trees and providing neutral or positive feedback.

When it first appears, the cap is convex and brownish-yellow, brown, yellowish-brown, or olive brown. The upper surface is dry and is densely covered with short velvety hairs. The margins are turned inward. As it ages the cap expands and the margins are turned downward. Mature caps are broadly convex to almost flat, sometimes depressed in the middle, and 1½ to 4 (4 to 10 cm) in diameter, sometimes much larger. The margins are sometimes turned upward. The upper surface sometimes develops cracks creating block-like patches similar to dried mud (areolate).

The pore surface is bright yellow at first, becoming brownish-yellow or olive yellow at maturity. When bruised it may weakly turn blue or not change color at all. The pores are large and angular, with 1 to 3 pores per 132 (1 mm). The pore tubes are to ¾ (10 to 20 mm) deep.

The stalk is solid, tough, 1½ to 3 (4.0 to 7.5 cm) long, and to ¾ (1 to 2 cm) thick. It may be tapered to the top, tapered to the bottom, or equal in width from top to bottom. There is no ring. Sources differ on the texture of the upper part of the stem. One writes that there is often a network of fine ridges (reticulate) due to the pore surfaces being pulled down the stalk (Mushrooms Demystified). Another writes that it is “often longitudinally ridged or somewhat reticulate” (California Fungi). A third writes that it is ribbed near the top but not reticulate (MushroomExpert.com).

The flesh is white to pale yellow. It usually turns pale blue when sliced. It is edible but the taste is mild and it is not much sought after.

The spore print is olive-brown.

 
     
 

Similar Species

 
     
     
 
Habitat and Hosts
 
 

 

 
     
 
Ecology
 
 

Season

 
 

Summer and fall

 
     
 
Distribution
 
 

Distribution Map

 

Sources

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

 
  8/28/2023      
         
 

Occurrence

 
 

 

 
         
 
Taxonomy
 
  Kingdom Fungi (fungi)  
  Subkingdom Dikarya  
  Phylum Basidiomycota (club fungi)  
  Subphylum Agaricomycotina (jelly fungi, yeasts, and mushrooms)  
  Class Agaricomycetes (mushrooms, bracket fungi, puffballs, and allies)  
  Subclass Agaricomycetidae  
  Order Boletales (boletes and allies)  
  Suborder Boletineae  
 

Family

Boletaceae (boletes)  
  Subfamily Xerocomoideae  
 

Genus

Xerocomus  
       
 

Genus
This species was originally described as Boletus subtomentosus in 1753. In 1888 it was moved to the new genus Xerocomus, based on the velvety cap, but this was not widely accepted. A genetic analysis published in 2013 confirmed the move. Most sources, including Index Fungorum, MycoBank, and iNaturalist, now use the name Xerocomus subtomentosus. NatureServe and GBIF continue to use the name Boletus subtomentosus.

Species
As currently defined, Xerocomus subtomentosus is found in very different ecosystems where it is associated with very different trees. It is likely that there are a number of phylogenetically distinct species currently using that name.

 
       
 

Synonyms

 
 

Boletus lanatus

Boletus leguei

Boletus striipes

Boletus subtomentosus

Boletus xanthus

Ceriomyces subtomentosus

Leccinum subtomentosum

Rostkovites subtomentosus

Versipellis subtomentosus

Xerocomopsis subtomentosus

Xerocomus lanatus

Xerocomus leguei

Xerocomus xanthus

 
       
 

Common Names

 
 

Suede Bolete

Yellow Cracked Bolete

 

 

 

 

 

 

 

Glossary

Areolate

On mushrooms, the cap surface cracked creating block-like patches similar to dried mud. On lichens: the surface sharply divided into islands separated by cracks.

 

Ectomycorrhizal

A symbiotic, neutral, or beneficial relationship between a fungus and the tiny rootlets of a plant, usually a tree, where the hyphae surround but do not penetrate the rootlets.

 

 

 

 

 

 
 
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Paul

 
    Suede Bolete   Suede Bolete  
           
    Suede Bolete   Suede Bolete  
 

Honey Fae (Farah)

 
    Suede Bolete      
           
 
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Other Videos
 
  Suede bolete mushrooms, Xerocomus subtomentosus, Boletus subtomentosus
Lady Mushroom
 
   
 
About

Sep 16, 2021

Suede bolete mushrooms, Xerocomus subtomentosus, Boletus subtomentosus

Xerocomus subtomentosus, commonly known as suede bolete, brown and yellow bolet, boring brown bolete or yellow-cracked bolete, is a species of bolete fungus in the family Boletaceae.

An infrequent species, the Suede Bolete is found mainly under broad-leaf trees, but it does occur also on the edges of conifer plantations where birch and willow grow.

 
  Boletus subtomentosus - Xerocomus subtomentosus - Suede Bolete
The wonderful world of mycology
 
   
 
About

Nov 13, 2022

In a small lake near our house that always gives us a lot of joy, I was able to see a few specimens of this bolete that I share with you here, its plush hat is very striking, it is edible of low quality and very common in our deciduous forests. That morning you can also see some beautiful cormorants that I also share.

I hope you like it

Xerocomus subtomentosus (L.) Quél. 1888

Characteristic:

-Cap: medium from 3 to 10 cm, its shape changes from hemispherical to flatten out with maturity. The tomentose or velvety surface is yellowish-olive green to brownish-olive green, excess margin

- The tubes are up to 1.5 cm long, the color varies from yellow in young specimens to yellowish green in adults.

- The pores are angular especially near the foot, adnate and a little decurrent from yellow to yellowish olive green, under pressure they change slightly to blue

- Stem: Cylindrical, sometimes curved, narrows towards the base, has folds or lateral ribs, yellow to ocher yellow, reddish ocher dots can also be seen.

-Flesh. A little spongy on the cap and hard on the stem, white on the cap and slightly yellowish ocher on the stem. The cut can blue the cut a little on occasion. Slightly fruity smell and pleasant taste

-Edible: Edible not highly appreciated

-Habitat: Mainly in deciduous forests, in this case in oak

-Place: Bizkaia, Basque Country

-Season: Summer and Autumn

 

 

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  Paul
8/28/2023

Location: St. Cloud, MN (Benton County)

Suede Bolete  
  Honey Fae (Farah)
8/26/2022

Location: Duluth, MN

Suede Bolete  
           
 
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Created: 2/2/2023

Last Updated:

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