Fruiting on a fallen subalpine fir.
Harvested 3 specimens and dehydrated/bagged for herbarium collection/genetic record.
My coinciding Mushroomobserver observation below-

https://mushroomobserver.org/520507?q=1okcZ

VOUCHER # 73370

DATE: 28 AUG 2021

STATE: WA

COUNTY: PIERCE

FORAY ID: South Sound Fungal Diversity Project.

SITE NAME: Just West of a Hiway 410 Gravel Parking Area, 100 Meters East of the White River

iNat #: 165405023

NEARBY FLORA:

Conifer: Douglas Fir, Mountain Hemlock, Western Hemlock, Silver Fir, Noble Fir.
Deciduous: Red Alder, Vine Maple, Red Huckleberry.
Evergreen: Sword Fern, Deer Fern, Rattlesnake Tongue Plantain, Oregon Grape.

SUBSTRATE: Well-rotted Conifer (likely Western Hemlock).

HABIT: Several, in multiple locations, from single to 8 specimens in a single layer.

LIGHT EXPOSURE: Shade, Partial Shade

MOISTURE: Damp

AMBIENT TEMP: 76 Degrees F

SOIL TEMP: N/A

ECOSYSTEM: Old, 2nd, -Growth Conifer, Mixed Forest, Very-small Creek (4-6’ wide) nearby

ELEVATION: 2778Ft/847Meters

LAY OF THE LAND: Predominately Flat with some irregular ground and downed conifer trees., Bumpy

REFERENCES:

Mushroom Matchmaker App (I. Gibson, M. Beug, D. Parker, D. Miller, N. Siegel, B. Kendrick);
Mushroom Expert Website (Michael Kuo), as Inonotus dryadeus

DETAILED DESCRIPTION, taken from the Mushroom Matchmaker app.

LATIN NAME(S): Pseudoinonotus dryadeus (Pers.) T. Wagner & M. Fisch. Mycol. Res. 105(7): 781. 2001; Inonotus dryadeus (Pers.: Fr.) Murrill North Am. Flora 9: 86. 1908; Polyporus dryadeus Pers.

English name(s): Warted Oak Polypore, Oak Bracket, Weeping Polypore

NOTES, Features include:
1) large semicircular, flattened fruitbodies without a stem
2) growth mostly on true fir (also hemlock and in eastern North America oak),
3) an upper surface that is bumpy, pitted, and whitish (buff) to darker brown,
4) a thick, rounded margin colored as the upper surface or ivory-colored,
5) yellowish brown to reddish brown mottled flesh,
6) a whitish (buff) to darker brown pore surface with a sheen that varies with incident light,
7) exudation of amber water droplets from the upper surface and pore surface when fresh, and
8) microscopic characters, including nearly round, colorless spores and strongly ventricose, hooked setae.

RANGE: Pseudoinonotus dryadeus has been found in BC, OR, AR, AZ, CA, GA, IL, IN, KY, LA, MD, MO, NC, NM, NY, OH, OK, PA, TN, TX, VA, and WV, (Gilbertson). It also occurs in Europe, Asia, (Breitenbach)

CHEMICAL REACTIONS flesh black with KOH (Lincoff)

CAP: 7.5-40cm wide, "single or sometimes fused, convex to irregular, with thick rounded margin, exuding water drops when young; whitish to gray, becoming gray-yellow, red-brown, or blackish; flat-hairy, becoming smooth; uneven to warty or bumpy", (Lincoff), up to 23cm x 35cm x 15cm, without stem, single or imbricate [shingled], applanate (horizontally flattened), semicircular, annual; upper surface buff to dark brown, margin the same color or sometimes ivory; not zoned, very finely tomentose or bald, becoming cracked when old, (Gilbertson)

FLESH: 1.5-5cm thick, soft and spongy when fresh; yellow-brown to rust-brown, (Lincoff), up to 10cm thick, soft, fibrous, zoned, cut surface appearing mottled because of streaks of darker softer tissue; "bright yellowish-brown at first to reddish-brown in older specimens", (Gilbertson)

PORES: 3-5 per mm, "round to angular; whitish to gray-brown, often with silvery sheen, becoming dark"; tube layer 0.5-3cm thick, (Lincoff), 4-6 per mm, circular or angular, with thin entire walls; "buff, often with exuding droplets of amber liquid in fresh specimens, becoming dark brown and cracking with age"; tube layer up to 2cm thick, colored as flesh, (Gilbertson)

STEM: none or very short

ODOR: intensely unpleasant (Breitenbach)

TASTE: mild, somewhat acidic, (Breitenbach)