Closest ID I have found (after conversing with a few different people in mushroom ID groups) but it still isnt a 100% match. I guess mushrooms can be idiosynchratic though?
Growing on a dead spruce log
Occidental Arts and Ecology Center- Mixed conifer/hardwood forest
Growing on well rotted, decorticated Quercus agrifolia log, cohabitating with many other species of fungus including Trametes betulina, Mycena haematopus and other resupinate fungi
Smell like tootsie rolls
Taste slightly citrusy
Black KOH
Stipe texture and pileus shape of younger ones made me think Mycena but probably not. Xeromphalina? Fruiting from soil in streambank with Abies magnifica and Pinus jeffreyi nearby. KOH brown. Odorless. Chrysomphalina aurantiaca and Galerina sp. in close proximity. KOH brown. Odorless.
At the foot of a black oak. Sour taste. Grey blue faint slow bruising. Ring present.
Origin location unknown.
Photograph and sample taken from the 2024 Fungus Fair in Santa Cruz.
Small, brown fungi growing on wood creekside,
Umbonate, sulcate cap,
Notched gills,
Thin, twisty stipe that darkens towards base,
Indistinct odor,
Yellow UV on gill margin,
Near alder
Lodgepole grass near wetland, ~20. Found by @julienpometta