Thank you so much for weighing in, it appears that this species variant is a very good match for this mushroom. When I first begun noticing this all around the bay area I thought it looked rather like a Psathyrella and because it does not deliquesce, figured it would not be described anywhere in the genus Coprinopsis, thooough… Unless these are closely related to P. gracilis(which I doubt) it will eventually need to be moved into a new genus when the family is reevaluated, so I won’t become attached to this name. Especially since P. marcescibilis var. marcescibilis seems distinct enough from this that maybe they represent distinct species, but I’m not sure. But at least now there is a reasonable name that all of these observations can finally be arranged together.
