Identificaciones de leptonia

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

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