View the spoiler for my guess at what I think it might be, but please first come to your own conclusion before looking at mine — I don’t want to bias your guess.
My guess
Psilocybe cyanescens
They were found in mid-november in the Salish Coast region of Cascadia. They were growing out of woodchips composed of a mixture of western hemlock (majority), and western red cedar.
Side view of one full mature specimen:
A group with a sample of the substrate (the cap appears to be umbonate):
A closeup side view, and internal view of the stem (it appears to be hollow):
Cross section of the gills — they appear to be adnate, or sub-decurrent:
Underside of view of the gills:
Spore print (first on white background (the split is due to two halves), second on a black background):
Examples specimens once dried:
Examples of the colony, and the location/substrate in which it was growing:
Cross-posts:
Out of curiosity, where would one look for the database of DNA sequences of things like mushrooms to compare, if one was able to sequence the DNA of a sample that they wish to identify?
the only people I have known to do this are research scientists at universities who join in the forays, I don’t have access to their tools and I doubt you do either (unless you happen to be a scientist at a research university).
If one doesn’t possess the equipment and they wish to sequence DNA, presumably there is somewhere where one could send a sample and pay to have someone sequence it. This thread talks about that.
As a side note, interestingly, it does seem within the realm of possibility for someone to purchase the tech required for sequencing the DNA. On Ebay, for example, I see lab equipment for that purpose at around 500$USD (of course not including any other materials required for the process).