Inonotus hispidus on Q cerris. 1 other id.

[Fungus]

the sp is mellea! genus armillaria!

 

It's Armillaria ostoyae producing the black oozing.

[Tony Croft aka hamadryad]

It's Armillaria ostoyae producing the black oozing.

 

thanks Gerrit, ostoyae being more pathogenic too?

[Fungus]

ostoyae being more pathogenic too?

 

No, not to the tree, but more competative than A. mellea because of its better resistance to resins (coniferous trees) and acids (Quercus robur, Castanea sativa).

[Baxter]

Gerrit thats really interesing stuff. How can you tell from that picture that its A. ostoyae and not A. mellea?

Feel free to point me in another direction for literature.

 

Nick

[Tony Croft aka hamadryad]

Gerrit thats really interesing stuff. How can you tell from that picture that its A. ostoyae and not A. mellea?

Feel free to point me in another direction for literature.

 

Nick

 

I would suspect he knows because of the tree species specific macrofungi knowledge he has leading him due to host physiology to a conclusion as to the species type.

[Fungus]

I would suspect he knows because of the tree species specific macrofungi knowledge he has leading him due to host physiology to a conclusion as to the species type.

 

Nick,

Tony is right and there's yet another reason : the colour of the center of the caps is far too (dark) brown for A. mellea (mellea = honey coloured) and to be sure it's A. ostoyae, one has to check the marginal zone of the lower surface of the ring, which should have dark brown to black scales for A. ostoyae and yellow scales for A. mellea s.s. (see my Encyclopaedia of Fungi, pages 166-167 for a complete description).