Identificaciones de ym_wang_pnw

These little lepiotas were fruiting all over the Douglas fir, Spruce and Hemlock forest. They had a dark brown velvety center at the top of the cap, a cottony cortina on the young specimens and remnants around the margin on the older ones. Stipes were shaggy when young as well.

Spore print white, microscopy at X100, X400, X1000 in DI water.

Willamette National Forest, Middle Fork Ranger District
T23S 3E sec 21; 43.56832 -122.46199
Douglas fir old growth forest
Cap light tan with rusty brown fibers, gills light yellow/tan, stem apex yellow fading to orange rusty brown, fibrillose
ID confirmed by Dr. Steven Trudell 7/28/2019

In stream crossing with waterfall in the mountains, growing right next to running water, on very wet wood.

6th and 7th photos show paraphyses with swollen clavate tips, septate, 10th photo shows they extend just slightly beyond the asci.

8th photo in Melzer's reagent showing amyloid asci tips.

Spores on more mature specimen were 22.5-25 x 10-11.25 microns. No guttules. All of this is consistent with the description for P. oliviae.

Spores on smaller specimen measured 15-20 x 8-10 microns, but there weren't many mature, so I think these were probably immature spores pressed out of the asci.

Mature fruiting body on a fallen Western Hemlock.
Laccate maroon cap coated in layer of spores(electrostatically dispersed back onto cap).
Harvested specimen and sliced into strip/cubes and began tincture/extraction in mason jars immediately after harvest using high proof alcohol. Harvested a small portion of edge of specimen and dehydrated/bagged for herbarium collection/genetic record.
My coinciding Mushroomobserver observation below-

https://mushroomobserver.org/526993?q=1p1WK