Scientific name: Humaria hemisphaerica (Wigg.) Fuckel
Derivation of name: Hemisphaerica means "half of a
sphere" referring the deep, cup-shaped form of this fungus.
Synonyms: Peziza hemisphaerica Wigg.
Common name(s): Hairy fairy cup, Brown-haired white
Occurrence on wood substrate: saprobic on well-decayed
wood and on rich humus; summer through fall.
Dimensions: 1-3 cm wide; deeply cup-shaped.
Sterile outer surface: Densely covered with stiff brown hairs.
Fertile inner surface: Whitish, smooth.
Comments: The fringe of brown hairs along the rim of
cup is very attractive against the creamy-white interior.
More information at MushroomExpert.com:
Figure 1. A number of specimens observed at the base
of a tree. Photo © Gary Emberger.
Figure 2. The white interior and hairy brown outside is
quite diagnostic. Photo © Gary Emberger.
Figure 3. The distinctive fringe of brown hairs along the
rim of the cup. Photo © Gary Emberger.