Panus neostrigosus

Scientific name:  Panus neostrigosus Drechsler-
Santos & Wartchow
Derivation of name: neo means "new" and strigos- means
"having coarse flattened, rigid hairs or bristles" (stigose)
in reference to the hairy caps and stipes of this mushroom.
Synonyms: Lentinus strigosus Fr.,  Panus rudis Fr.
Common name(s):  Ruddy panus.
Phylum:   Basidiomycota
Order:   Polyporales
Family:   Polyporaceae
Occurrence on wood substrate: Saprobic; solitary but
mostly clustered on deciduous logs and stumps; May
through November.  
Dimensions:  Caps 2.5-7.5 cm wide; stipes (when
present) 1-2 cm long and 0.3-1 cm thick.   
Cap: Pinkish-tan to reddish-brown with violet tints when
young, tan with age; dry; densely hairy and velvety.        
Gills: Decurrent; white to tan
Spore print: White.
Stipe: If present, pinkish-brown to tan, densely hairy;
stubby; lateral to off-center.
Veil: Absent.
Edibility: Inedible.
Comments: The degree of color change is remarkable
and can occur in the course of a single day. DNA
information places this gilled mushroom among the
polypores, indicating the independent evolution of
gills.

More information at MushroomExpert.com:
  

Figure 1. Ruddy panus on a stump. This is the morning
of a day following several rainy days.
Photo © Gary Emberger.

Figure 2. The same stump and the same day as Figure 1.
but later in the afternoon. The sun came out and the
colors faded. Photo © Gary Emberger.


Figure 3. The caps that still have some violet color were
shaded by other caps that were removed for the
photograph. Photo © Gary Emberger.

Figure 4. Violet coloration in young specimens.
Photo © Steve Nelsen.

Figure 5. These fungi are quite persistent but in time the
specimens are all a drab ochraceous or tan color.
Photo © George Morrison.


Figure 6. Caps are kidney- to fan-shaped or even funnel-
shaped as in these specimens. Photo © Gary Emberger.


Figure 7. One of the most conspicuous features is the
coarse hairiness of the caps. Photo © Gary Emberger.

Figure 8. The gills are decurrent and the margin is inrolled.
Photo © Cecily Franklin.

Figure 9. Closeup of an inrolled margin.
Photo © Gary Emberger.

Figure 10. Stipes, when present, are also quite hairy.
Photo © Gary Emberger.