Pluteus admirabilis

Scientific name:   Pluteus admirabilis (Peck) Peck
Derivation of name: Ad- means "to" or "toward" and
mirab- means "admirable."
Synonyms:  
Common name(s):  Yellow Pluteus.
Phylum:   Basidiomycota
Order:   Agaricales
Family:   Pluteaceae
Occurrence on wood substrate: Saprobic; single to
several on decaying deciduous wood; June through
September.  
Dimensions:  Caps 1-3 cm wide; stipes 3-6 cm long
and 1.5-3 mm thick.   
Cap: Moist when young; bright yellow, fading to
yellow-brown in age; smooth to wrinkled in the center. 
Gills: Free, whitish at first, then pale yellow, and finally
pinkish at maturity.
Spore print: Salmon
Stipe: Yellow.
Veil: Absent.
Edibility: Edible.
Comments: The similar P. leoninus has a smooth cap
and a white stalk.

More information at MushroomExpert.com:   


Figure 1. Young Pluteus admirabilis specimens on a
hardwood log. Photo © Gary Emberger.


Figure 2. Smooth, moist (any shiny) caps and white gills
of young specimens. Photo © Steve Nelsen.


Figure 3. Cap color is more yellow-brown in age and the
gills become pinkish. It's important to see the mature
gill color in order to help confirm the identity of this species.
Photo © William Roody.

Figure 4. Gills are whitish at first, become yellow, and
then pinkish when mature. The stalk also shows
variation in color. Photo © Steve Nelsen.

Figure 5. Caps may be wrinkled and darker in the center.
Photo © John Plischke III.


Figure 6. In addition to the wrinkling near the center, note
the striate margin. Photo © Steve Nelsen.