Scientific name: Phyllotopsis nidulans (Fries) Singer
Derivation of name: Nid- means "nest" although it is not
clear to me how nest or nesting applies to this species.
Synonyms: Pleurotus nidulans; Claudopus nidulans.
Common name(s): Orange mock oyster.
Occurrence on wood substrate: Saprobic; solitary or
more typically in overlapping clusters on conifer and
deciduous wood; August through November.
Dimensions: Caps 2.5-7.5 cm wide.
Cap: Orange to yellow-orange or paler; densely covered
with hairs; dry; odor offensive.
Gills: Orange to yellow-orange; radiating from point of
Spore print: Pale pink.
Comments: A very distinctive fungus but usually with a very
More infromation at MushroomExpert.com:
Figure 1. A beautiful view of orange mock oyster with rays
of sunlight highlighting the fuzzy caps. Photo © Larry Grand.
A much paler specimen than that in Figure 1.
Photo © William Roody.
Figure 3. Very young and very fuzzy caps. Photo © Gary
Figure 4. Gills of a young specimen. The gills have the same
color range as the cap
surfaces. Photo © R. Al Simpson.
Figure 5. Gills radiate from the stalkless points of
attachment. Photo © Gary Emberger.
Figure 6. This is an interesting group of young and
specimens. What appears to be a stalk on
specimen on the right is actually a young,
oriented vertically. Photo © Pam Kaminski.