Tricholomopsis decora

https://www.mushroomexpert.com/Tricholomopsis_decora.html

Ecology: Saprobic on the wood of conifers, especially (but not exclusively) that of hemlocks; growing alone, scattered or gregariously; summer and fall; widely distributed in North America; also known from Europe and Australasia. The illustrated and described collections are from Colorado, Kentucky, and Ohio.

Cap: 2-5 cm; convex at first, becoming broadly convex, flat, or shallowly depressed with an uplifted margin; moist when young but soon dry; yellow to brownish yellow; covered, at least over the center, with small brownish to grayish scales and fibrils.

Gills: Broadly attached to the stem; close or crowded; yellow to brownish yellow; short-gills frequent.

Stem: 2-5 cm long; 3-6 mm thick; more or less equal; bald; hollow; pale yellow; basal mycelium white.

Flesh: Yellowish; not changing when sliced.

Odor and Taste: Odor not distinctive; taste bitter.

Chemical Reactions: KOH red to pink or orange on cap surface.

Spore Print: White.

Microscopic Features: Spores 4-8 x 4-6 m; broadly ellipsoid to subglobose; smooth; hyaline in KOH; inamyloid. Lamellar trama parallel. Basidia 4-sterigmate. Pleurocystidia not found. Cheilocystidia 50-62.5 x 10-15 m; cylindric to subclavate; smooth; thin-walled; hyaline in KOH. Pileipellis a cutis; elements sometimes agglutinated, 3-10 m wide, smooth, golden in KOH en masse (individually yellowish)—interspersed with bundles of uplifted brown elements (the scales); clamps present.

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