I’ve always thought of the genus Mycena as a large, common, and very diverse group of agaric fungi, especially here on the Pacific coast of America and Canada. So, since when has the genus been “imperiled/vulnerable”? Is this an error? I tried searching the website that was cited:
Conservation Status: imperiled (S2S4) in British Columbia, CA (NatureServe)
and I found nothing…
How could this be? If this is really true, what does that mean for the species? A few miles to the south in Washington, there is no vulnurable status on observations of Mycena.
More generally, one should be very cautious with the conservation status tags on iNat. There is a certain logic to them, but not one that generally results in the things that are labelled as having a particular conservation status necessarily having that status. I have the impression that sometimes, for example, one difficult to distinguish subspecies in a genus being vulnerable leads to the whole genus being marked as vulnerable.