Roadside Decay

[David Humphries]

David,

. What kind of tree species were near by, that is to say within 5-20 metres ?

 

 

 

Oak predominantly Gerrit.

 

I thought perhaps Leccinum quercinus, but I think that's a shot in the dark tbh

 

 

 

 

.

[Fungus]

Oak ... I thought perhaps Leccinum quercinus

 

Looking at the scaly stem, that's what I thought too .

[David Humphries]

Gerrit, in your experience, does L. scabrum associate with any other broadleaves other than birch & hazel ?

 

 

 

.

[Tony Croft aka hamadryad]

Hornbeam i think? could be wrong im sure i found it in association in epping but could be wrong, wouldnt be the first time!

[Fungus]

does L. scabrum associate with any other broadleaves other than birch & hazel ?

 

David & Tony,

No, L. scabrum s.s. only associates with Betula species, L. griseum with Carpinus and from Corylus avellana, which only has Lactarius hortensis (= L. pyrogalus) as a tree species specific symbiont, is no Leccinum species documented.

[Fungus]

L. scabrum s.s. only associates with Betula species, L. griseum with Carpinus.

 

To complete the picture :

 

Also exclusively Betula associated : L. atrostipitatum, L. holopus, L. melaneum, L. niveum, L. onychinum, L. oxydabile, L. roseofractum, L. roseotinctum, L. rotundifolea, L. thalassinum, L. umbrinum, L. variicolor, L. versipelle (= L. testaceoscabrum).

Exclusively Populus alba or P. tremula associated : L. decipiens, L. duriusculum both P. alba, L. rufum s.s. (= L. auriantiacum) P. tremula.

Exclusively Quercus associated : L. quercinum.

Exclusively Fagus associated : L. atrostipitatum.

Exclusively Salix repens associated : L. salicicola.

Exclusively Pinus associated : L. vulpinum.

Exclusively Picea associated : L. piceinum.

Associated with Betula and Populus : L. coffeatum.

Associated with Betula and Quercus : L. subcinnamomeum.

 

There is still discussion on whether some of the Betula associated Leccinum species are species sensu stricto or should be implicite species sensu lato or categorized as subspecies or varieties.

 

Sources :

H. Engel, A. Dermec & R. Watling (1983). Rauhstielröhrlinge. Die Gattung Leccinum in Europa.

E. Arnolds, et al. (1996). Overzicht van de paddenstoelen in Nederland.

[David Humphries]

Oak predominantly Gerrit.

 

Exclusively Populus alba or P. tremula associated : L. decipiens, L. duriusculum both P. alba, L. rufum s.s. .

 

Gerrit,

 

I went back to the site yesterday evening and noted that there was a large Poplar as well as some young Pear & Ash in addition to the aforementioned Oaks.

 

Someone (another site) has now suggested Leccinum duriusculum - the Slate Bolete, as a contender.

 

 

 

.

[Fungus]

there was a large Poplar as well ... Someone (another site) has now suggested Leccinum duriusculum - the Slate Bolete, as a contender.

 

.

[David Humphries]

.

 

Certainly reads as a good possible.

 

Green staining near base of stem.

Colouring dark/black when cut open.

 

 

Do you have these in Holland?

 

 

 

.

[Fungus]

Do you have these in Holland?

 

Yes, in Holland and in The Netherlands too. With lots of poplars present, they're quite common.