Scientific name: Polyporus alveolaris (DC.)
Bondartsev & Singer
Derivation of name: Polyporus means "many pores";
alveolaris means "with small pits or hollows."
Synonymy: Favolus canadensis Kl.; Cantharellus
alveolaris DC.: Fr.; Polyporus mori Pollini; Favolus
alveolaris Quel., Neofavolus alveolaris (DC.)
Sotome & T. Hatt
Common names: Hexagonal-pored polypore.
Occurrence on wood substrate: Saprobic; solitary to
grouped on fallen branches of deciduous trees; May
Dimensions: Caps 1-10 cm wide, semicircular to
fan-shaped; stipes (when present) 0.5-2 cm
long and 1.5-5
mm thick, lateral, stubby.
Upper surface: Orange-yellow to reddish-orange,
Pore surface: Whitish to pale yellow; polygonal to
hexagonal, arranged in radial rows; pores are
1-2 mm wide.
Edibility: Edible but tough.
Comments: Compare to P. arcularius which has a
cap and a central stalk.
More information at MushroomExpert.com:
Figure 1. Hexagonal-pored polypore on a branch. Photo
Figure 2. Orange-yellow, scaly caps of Polyporus
alveolaris. Photo © Gary Emberger.
Figure 3. Specimen showing the large polygonal, radially
arranged, pores of hexagonal-pored polypore. The pores
are not all six-sided as "hexagonal" might imply.
Photo © Gary Emberger.
Figure 4. Pores decurrent on lateral stipe.
Photo © David Work.
Figure 5. It's uncertain whether the pore surface, as it
appears above, is a normal developmental stage or
something unusual with this specimen. See Figure 6 for a
photograph of a similar pore surface on a NEMF
specimen collected in 2003. Photo
© R. Al Simpson.
Figure 6. Polyporus alveolaris collected during a NEMF
foray in 2003. Photo © Gary Emberger.