Observation 51265: Marasmius wynneae Berk. & Broome

When: 2010-08-22

Collection location: Thoiry, France [Click for map]

Who: Douglas Smith (douglas)

Specimen available

Found under spruce and fir.

Adding some micro-details:

The first micro-shot is of the gill edge at 400x in Meltzer’s. The cheilocystidia are broadly clavate to utriform. Pleurocystidia were not obs. Also there were no reactions to Meltzer’s in the tissues or spores.

The second micro-shot is of the spores from the gill at 1000x in Meltzer’s. The spores are hyaline, ellipsoid, smooth. Apr. size is 8 × 4 um.

I really thought these were Marasmius cohaerens with the smooth stipe, that darkens from the base, no odors, smooth tan cap. But now that I’ve gone and found the real M. cohaerens, in other places, and strangely in the same place as these… it seems these are not. Looking at the details under the microscope, now I’m not sure. They might still be Marasmius, but they also are probably Gymnopus. Looking in what info I have on those genera (which is spotty at best…), nothing really matches these well. So, punted back to unknown, yet another weird white spored Gymnopus like thing.

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Recognized by sight
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Created: 2010-08-24 12:55:57 MST (-0700)
Last modified: 2011-09-01 13:52:48 MST (-0700)
Viewed: 50 times, last viewed: 2017-06-07 20:06:50 MST (-0700)
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