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Kretzschmaria duesta (Ustulina duesta)
Kretzschmaria duesta (Ustulina duesta)
  • Mature form is similar to a black charcoal crust. The forming asexual stage is white/grey.
Host Species
  • Lime, Beech, Sycamore, Birch, Maple, Hornbeam
Mode Of Decay
  • Parasitic soft rot, decaying cellulose & lignin at interface of buttress & trunk and also at height on the trunk.
    Appears to be saprophytic at times between butresses & on stumps
  • Can lead to trunk failure & wind throw.
  • Europe
  • Deemed as very significant as fruit bodies are hard to spot. No thickening of the stem is associated with this decay. Found predominantly on the basal area of trunks.

Click Thumbnail to Enlarge.
K. duesta on Oak - taken by D Humphries K. duesta on Beech - taken by D Humphries K. duesta - taken by D Humphries K. duesta cross section showing spore chambers - taken by D Humphries K. duesta - taken by D Humphries K. duesta on Sycamore- taken by D Humphries
Gallery Statistics
Views: 11290
Images: 6
Comments: 4
Author Comment Date
David Humphries Hello Treeguru,

Save your image to your computer/phone/tablet.
Reply to a post on one of the threads within the fungi picture forums, perhaps this one (http://arbtalk.co.uk/forum/fungi-pictures/558-tis-season-see-fungi-fa-la-la-la-la-296.html)

Then look for the paper clip attachment in the edit window (about half way along on the top) - this will allow you to upload images from your computer/file location.

Hope that helps.
Treeguru I believe I have a ganoderma applanatum? How do I post a photo? 20-01-13
Fungus The mycelium does not cause white rot, but soft rot (Moderfäule), which is much more detrimental to the stability of (the basal area of the trunk of) the tree.
Gerrit J. Keizer
Treerat22 Ive seen what this can do to beech trees, very nasty if left in the wrong tree in the wrong place, the tree will apear in good health , then with out any die back or warning the tree will fail at lower bazel area, it only when she is on the ground and opend up you can see the decay!! 18-03-11
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