Observation 110248: Ganoderma applanatum (Pers.) Pat.

When: 2012-02-18

Collection location: Chubb Trail, Eureka, Missouri, USA [Click for map]

Who: Patrick Harvey (pg_harvey)

No specimen available

Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I think the color is variable.
By: Matthew Schink (MSchink)
2014-12-09 14:25:25 MST (-0700)


This is one that I watched grow this year, I ripped the previous years growth off this spring. It kept a grey color most of the time, but on occasion after it rained it would be a brown color for a week or so. The same color as spores but no spores came off when I rubbed it. It always faded back to grey. Note the last photo a significant portion of the right side is still brown.

After the leaves fell though, the color lightened up substantially so sun bleaching could also play a role especially in the lighter colored ones.

Ganoderma seem to be largely restricted geographically with little to no actual cosmopolitan species. It would be interested to see DNA sequences from North America and Europe.What seems to be a decent way to distinguish this Ganoderma megaloma from the European applanatum is the presence in the North American variety of a sterile margin that surrounds the pore surface, sometimes becoming quite prominent. If you look at many European G.applanatum around Mushroom observer this feature seems lacking, in most but not all specimens.

So the gray Artist’s Conks…
By: Dave W (Dave W)
2014-12-09 13:51:11 MST (-0700)

are the same as the brown ones…? I have wondered about this. Maybe the pale gray ones are sun-bleached?

By: walt sturgeon (Mycowalt)
2014-12-09 09:31:00 MST (-0700)

does not have these names as synonyms. The issue is that G. applanatum is a European name and G. megaloma was described from New York. So,like so many of our familiar fungi, there is confusion as to what to call them. Artist conk works for both.

Current Index Fungorum name is Ganoderma applanatum
By: Patrick Harvey (pg_harvey)
2014-12-09 09:17:31 MST (-0700)
G. megaloma is a synonym
By: Patrick Harvey (pg_harvey)
2014-12-09 09:11:45 MST (-0700)

Created: 2012-09-17 20:57:10 MDT (-0600)
Last modified: 2014-12-09 09:17:03 MST (-0700)
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