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Spore color should be the most invariable part of the specimen across locations.
Another major characteristic of the Gymnopilus is odor: a...
Here is a paper a couple of my students wrote. Very pertinent to this thread.
Gymnopilus junonius (formerly G. spectabilis) has a bright rusty orange spore print.
This does not look characteristic of a Gymnopilus. I suspect your spore print will be pale brown or even white.
Looks like Fulgio septica, the dog vomit slime mold. You can carefully remove all the soil from the flower bed to get rid of it - sorry but that's...
Beautiful Parasola plicatilis.
Beautiful! Polyporus squamosus. The underside should smell like the rind of a watermelon.
looks like a Helvella or Gyromitra.
These are some kind of ink cap. There are many, but most people would call what you have Coprinopsis micaceous.
On the plus side, it makes a good conversation piece. And I can't imagine it is harmful. I doubt any pets would be interested in it either.
that is special. can you break off a chunk of the edge and take a picture of the underside? Is it exactly like the top (slime mold) or does it...
A morel! Perhaps Morchella importuna given your geographic location and that it is in a garden?
Erowid is a well known internet resource for people looking for 'those kinds' of mushrooms.
this is so far off from a 'magic' mushroom that i kindly request, for your own safety, that you not eat any mushroom.
these are in the Coprinus family. possibly Coprinellus micaceus.