Identificaciones de pinonbistro

Laying on/in leaf litter with some dirt in crook of unknown dead tree trunk in area of ash, willow, and cottonwood by river. Looked somewhat like old coprinus comatus but not quite the same as others I've seen. Possibly due to partially deliquescing and drying and then being rained on. Neither was connected to anything, one was missing bottom of stipe and other had a bulge at base. Stipe had ridges. One cap had split and curled up and other had curled in. Was soft and elastic and tough. Had to tear cap instead of cutting. "Ink" was sticky/resinous.

Growing in a large burned out stump in mixed Oak/Ponderosa/Cypress habitat. 1-2cm across. Very soft fruiting bodies with a black cap. Black fibers on the pileus. Closely spaced and frilly brown/gray gills. No visible reaction to KOH.

Growing from a heavily decayed conifer stick in a wet creek bed. White basal mycelium, light brown stipe with streaks that becomes brighter and more obviously streaked at the apex. Gills cream colored and appearing in series. Cap broadly cone-shaped, dark brown becoming cream colored at the margin, decorated with mild appressed fibers that look somewhat grainy at the margin.

Convex fibrillose pale-brown/dull-yellow caps, 2.5-3.5cm across with an inrolled margin. The fibers on the cap appear as a darker brown. Closely-spaced yellow adnate gills appearing in 3 series. Orange stipe 7-8mm long, hollow with slightly fibrilose interior appearing yellower than the rest of the context, lacking any evidence of a cortina or other partial veil, appearing bleached white near the gill connection point and yellow at the base of the mushroom (yellow coloration extends through the rest of the "root" created by growing through the bark). The stipe also has a streaked texture, with the lines being brown to dark red-ish. Basal mycelium white. Spores not appearing on white paper, so I cannot confirm for now but assuming white spores. Stipe also had a streaked texture similar to wood grain. Growing in mixed conifer forest. No notable staining or odor (other than "mushroomy").

Originally thought Tricholomopsis decora, but it seems this has finer fibrils rather than what I would say are squamules. The paper "Tricholomopsis (Agaricales) in the Western Hemisphere" (https://www.jstor.org/stable/2805334) has a decent key, but it seems that beyond the spot I reach in the key requires microscopy (point 11). So, this is my best guess for now.