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pamsai, the smell should be present without doing anything special. Sometimes you have to smell several parts of the mushroom (Cap, gills, stem, stem base, context) or crush it a little to get the smell. Cooking is said to make the smell more pronounced too, although I don't have much experience with this.
I meant the other sighting, but thanks, those are good cap images! :) Smell and staining reactions are very helpful with Agaricus if you happen to have those. Does it smell good/anise/sweet/etc., bad/phenol/like chemicals, or store bought portabello? What colors does it stain? On the cap, stem & context, is it fleeting or persistent? Also with KOH if you have it.
I'm not really sure which way to lean either, I'm not really familiar with Brazilian inky caps. Going through Uljé's key would help, but that requires micro. http://www.grzyby.pl/coprinus-site-Kees-...
And considering species like Coprinopsis marcescibilis the DNA could always surprise us. http://www.vielepilze.de/selten/psat/bek...
Also, its not 100% true that Parasola do not have a veil if you think species like Psathyrella atrospora should be moved into Parasola like P. conopilus was, it is mostly true at least though....
http://mushroomobserver.org/image/show_i...
http://mushroomobserver.org/image/show_i...
I agree, now that I look at it again its certainly seems one or the other, probably not Parasola or one of the lesser known genera.
Gills? From this view this could be a lot of different things...
Laccaria on wood might be doubtful not to mention L, laccatta is probably an overused field guide name...
Probably not P. cyanescens or another Copelandia species. It has a really dark stem and doesn't seem to be staining blue, this one would be pretty interesting to look at under the microscope.
Most certainly not Panaeolus, you will need gill images before we can start making educated guesses as to what it is though...