moremoth's picture

Ganoderma on Beech.

Observed: 11th January 2012 By: moremothmoremoth’s reputation in Fungi and Lichensmoremoth’s reputation in Fungi and Lichensmoremoth’s reputation in Fungi and Lichensmoremoth’s reputation in Fungi and Lichens
 Ganoderma.
Ganoderma. Top surface.
Ganoderma. Lower surface.
Ganoderma. Cross-section.
Ganoderma. Bigger cross-section.
Description:

A large bracket fungus on a mature Beech.

Identifications

Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

Species interactions

No interactions present.

Comments

flaxton's picture

You say "but the way the

You say "but the way the lower surface discolours suggests G. applanatum;"

Unfortunately G australe does exactly the same. See http://www.ispot.org.uk/node/89279?nav=users_observations
Although the cross section does not show more than one years growth it does show a thick upper layer so I think G australe is likely.

Mal

moremoth's picture

Discoloration

Mal - I had a feeling G. australe might discolour! Thanks. I will try to get a bigger chunk the next time I go that way.

Bill

Bill Welch

moremoth's picture

Which Ganoderma?

I have added a bigger cross-sectioned piece with the previous year's growth. You can see from this that the upper layer stays about the same thickness (with a bit of variation during the year) and the tube layer is noticeably thicker than it. According to Roger Phillips, this suggests G. applanatum. Just to add a bit more confusion!
Bill

Bill Welch

flaxton's picture

Bill The defining

Bill
The defining characteristic of the two species is that the tubes of applanatum have a sterile layer between each years growth and australe do not. Your second photo shows this perfectly so I would say you can now change the id to G australe with confidence.
Mal

moremoth's picture

Defining

Mal - Thanks, excellent detail!
Bill

Bill Welch