When: 2014-05-16

Collection location: Flagstaff, Arizona, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

At the base of dead aspen at about 8000’ elevation. There were many of these at the bases of adjacent dead mature aspens in this area. According to the USDA Field Guide G. applanatum is found in almost all aspen stands in the SW and “Although there are other root decay fungi of aspen, G. applanatum is the most prominent and the only one that produces a tough woody-conk at ground line in live trees in the Southwest.” According to this reference the fungus can decay the major roots so severely that the tree will topple over—may be what happened to the tree in the second photo.


Layered tubes
Two large conks at base of downed aspen
Lumpy, azonate cap surface with white margin
White pore surface
Brown flesh and tubes up to 1.5 cm

Proposed Names

86% (1)
Recognized by sight: Gray brown ridged lumpy cap surface with white margin, brown woody flesh, layered tubes up to 15mm separated by brown tissue, white pore surface that is brown where scratched
Used references: Kuo, M. (2004, February). Ganoderma applanatum. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/ganoderma_applanatum.html and USDA Field Guide. What Gilbertson called AZ collections: http://mycoportal.org/...
Based on chemical features: KOH black on flesh and tubes

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Created: 2014-05-17 01:36:00 AST (-0400)
Last modified: 2019-07-20 14:10:56 AST (-0400)
Viewed: 91 times, last viewed: 2020-03-25 08:53:46 AST (-0400)
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