Observation 318927: Ganoderma tsugae Murrill

When: 2018-06-04

Collection location: Delaware Water Gap, Pennsylvania, USA [Click for map]

Who: Chris Foss (The Vault Dweller)

No specimen available

I’d like to point out something VERY important about this observation. Now Ganoderma tsugae seems to exclusively parasitize the Eastern Hemlock which is being wiped out along the East Coast due to the Hemlock Woolly Adelgid an invasive insect. I have visited this area around this time in 2013, 2017, and now 2018. In 2013 there were a few samples of G. tsugae found in this forest that was so heavily canopied that in full sun most of my surroundings were in dark shade. In 2017 the forest was heavily ‘thinned’. Most trees had barely any needles, but G. tsugae was so abundant I couldn’t carry all the samples I found if I had a backpack (not that I’d take that many if I could). Clearly the Adelgid had devastated this area. This year almost none of the trees had needles at all and most of them had lost their branches as well with plenty of trees toppled over. I also found almost NO G. tsugae samples.

It’s clear that in a healthy forest only a few dying trees could host G. tsugae and as the Adelgid drastically weakened the trees G. tsugae began to claim lots of them, but now that they’re almost all gone there’s nowhere left for G. tsugae to parasitize. I suspect next year I will find none.


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Created: 2018-06-06 18:39:10 PDT (-0700)
Last modified: 2018-06-06 18:39:16 PDT (-0700)
Viewed: 25 times, last viewed: 2019-08-23 08:46:50 PDT (-0700)
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