Scientific name: Postia caesia (Schrad.) P. Karst.
Derivation of name: Postia means ???
means "bluish gray."
Synonymy: Polyporus caesius Schrad.: Fr.; Oligoporus
caesius (Schrad.) Gilb. &
Common names: Blue cheese polypore.
Occurrence on wood substrate: Saprobic; solitary on
decaying deciduous and conifer wood; August through
Dimensions: Caps 1-8 cm wide
Upper surface: Whitish with grayish-blue tints, bruising blue;
hairy to glabrous.
Pore surface: White to bluish, bruising bluish; pores 3-6 per
Comments: Odor fragrant. This polypore is soft, watery and
spongy when fresh.
More information at RogersMushrooms.com:
Figure 1. Postia caesia on a dead branch. Note the
overall grayish-blue coloration. Photo © Dianna Smith.
2. Collected specimens with the grayish-blue
typical of this species. Fresh specimens are soft
watery. Photo © Gary Emberger.
Figure 3. The coloration is intense in these specimens.
Photo © George Barron.