Another Leccinum

[SheffieldLass]

Another Leccinum that is puzzling me. Found under birch, close to spruce, but willow and oak nearby too.

The flesh very rapidly went bright orange at the base, and distinctly red at the edges of the stipe when cut. No sign of blue/green anywhere.




The stem scabers were comparatively fine and greyish, though lower down slugs had obviously been grazing them away.

Pileipellis was of longer elements, ratio averaging 6.7


Scabers caulocystidia were clavate and some with an extended tip.


Cheilocystidia


Spores (13.2) 14.3-16.6 (17.2) x (5.0) 5.3-5.9 (6.1)um Qav 2.8

In quite a few respects this fits Leccinum scabrum, but not all. Also the staining seems a bit unusual.

Ideas/suggestions very welcome.

Melanie

[mollisia]

Hello Melanie,

the colour change looks indeed quite strange. That are not the colours Leccinum usually have, may be this is due to a parasitation by something?
The stipe covering doesn't fit for Leccinum scabrum, which should have more prominent, blackish squamules. So I don't know what to do with this one either. May be you compare with Leccinum schistophilum. I had it once and it was a strange to me for several years until I came to the conclusion that it should be this species. It also had a quite strong colouration of the flesh when cut, but I don't remember the cuticule characters.

best regards,
Andreas

[SheffieldLass]

Originally Posted by mollisia

Hello Melanie,

the colour change looks indeed quite strange. That are not the colours Leccinum usually have, may be this is due to a parasitation by something?
The stipe covering doesn't fit for Leccinum scabrum, which should have more prominent, blackish squamules. So I don't know what to do with this one either. May be you compare with Leccinum schistophilum. I had it once and it was a strange to me for several years until I came to the conclusion that it should be this species. It also had a quite strong colouration of the flesh when cut, but I don't remember the cuticule characters.

best regards,
Andreas

I found some Leccinum scabrum today and knew immediately what they were, certainly a different jizz to this one. There are quite a few in the same area which I think are Leccinum schistophilum and this one was very similar in appearance apart from the colour change. The micro characters do seem to fit this.

Cheers
Melanie