Observation 85218: Ganoderma applanatum (Pers.) Pat.
When: 2011-12-27
No herbarium specimen

Proposed Names

60% (5)
Eye3 Eyes3
Recognized by sight: Host is a cottonwood.
56% (1)
Recognized by sight: sterile border on tubes, milk white, eastern U.S.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Patrick Harvey (pg_harvey)
2012-01-11 10:23:36 EST (-0500)

Check second illustration here:


That is also not very flat.

The host is cottonwood
By: Patrick Harvey (pg_harvey)
2011-12-28 10:20:00 EST (-0500)

And I’m no expert either, but it looks more like G. applanatum to me.
No room for a scope in my apartment.

The only safe way
By: Irene Andersson (irenea)
2011-12-28 04:08:09 EST (-0500)

to tell applanatum and australe apart, is measuring the spores.
But the context here is mottled with white spots and streaks as in applanatum (darker and homogenous in australe).
I also beleive that I see thin context lines between tubes in the first photo with a cross-section.
The host also speaks for applanatum. Some kind of poplar, right?

G. applanatum or. G. australe?
By: Martin Cooper (martincito)
2011-12-27 18:04:35 EST (-0500)

Hi Patrick, In the cross-section photos, I couldn’t see any sterile layer between each year’s growth, but that may be because there is only one layer. Using http://www.ispot.org.uk/node/104341 as inspiration, I was hoping that (in the absence of spore measurements) the layering would confirm that the observation was definitely G. applanatum and not G. australe. Sorry if it is a dumb question – I’m a bit of a fungal newbie, but how do you tell those 2 species apart? I’d appreciate your comments… Regards, Martin

Created: 2011-12-27 17:11:57 EST (-0500)
Last modified: 2015-03-23 12:37:44 EDT (-0400)
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