Sarcomyxa serotina (Pers.) V. Papp

Descripción original 
Cap: 3–11 cm wide; semicircular to shell-shaped in outline; planoconvex to flat or shallowly depressed; sticky when fresh; bald; dull, dark green to olive when fresh, fading to yellowish or greenish, or sometimes darkening to medium brown.
Gills: Radiating from the point of attachment or running down the pseudostem; close; short-gills frequent; orangish to yellowish buff, developing brownish edges.
Stem: Absent, or occasionally present as a stubby lateral pseudostem.
Flesh: Whitish; tough and rubbery; unchanging when sliced.
Odor and Taste: Not distinctive.
Spore Print: Whitish.
Microscopic Features: Spores 3.5–5.5 x 0.75–1 µm; cylindric to suballantoid; smooth; hyaline in KOH, with 1–4 oil droplets; with amyloid walls when still attached to (or recently released from) basidia. Cheilocystidia abundant; 35–60 x 7.5–15 µm; cylindric to fusiform or lageniform; hyaline in KOH; thin-walled; smooth, becoming encrusted. Pleurocystidia scattered; 25–40 x 7.5–15 µm; lageniform to widely cylindric or subutriform; thin-walled; smooth; hyaline in KOH. Pileipellis a cutis; golden in KOH; elements 2.5–5 µm wide, smooth or encrusted, tightly woven; pileocystidia present in bundles, 60–80 x 7.5–12.5 µm, cylindric, thin-walled, encrusted. Subcutis gelatinized and poorly defined. Clamp connections present.