These little hairy white mushrooms range from pin-head tiny to about two cm in diameter.
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These collections clearly represent the Genus Crepidotus. As far as the species name, it is a matter of doing microscopy and even then not too easy without a dedicated source, such as “North American Species of Crepidotus” by Hessler and Smith.
Well, sounds like its time to start with a spore print… These look like they could be Marasmius or Crepidotus… or…
The second and third photos (25100 and 25101) are of the same specimen. If you look at the small mushroom second from the left you can see a central stipe bent to one side. The mushrooms in photo 25102 were growing on the inside of a piece of birch bark that had partially separated from the dead log. True central stems are evident in the small specimens. In the older specimens, the stems bend to one side and are obscured as the gills crowd in around them. Spores probably account for the brown tones on the gills in 25100, but presence of a stipe makes me suspect these are not Crepidotus.
It looks like it might be two different species. The first and fourth photos seem to be a species with a pseudo-stipe, and the gills stain pinkish. Maybe a Marasmius or related genera. The second and third photos look like a Crepidotus, without a stipe and gills turning brown in age with the spores.
Created: 2008-10-12 15:02:32 PDT (-0700)
Last modified: 2008-10-12 15:02:32 PDT (-0700)
Viewed: 35 times, last viewed: 2019-12-08 19:58:31 PST (-0800)