Scientific name: Peziza badioconfusa Korf
Derivation of name: Badi- means "reddish-brown"
and confusa implies this fungus can be confused with
Synonyms: Peziza phyllogena Cooke
Common name(s): Common brown cup
Occurrence on wood substrate: Saprobic; solitary
or clustered on the ground or well-decayed wood
(especially moss-covered stumps); spring through
Dimensions: Up to 10 cm wide; deep to shallowly
cup-shaped, flattening with age; stalkless.
Sterile outer surface: Reddish-brown; dull,
Fertile inner surface: Reddish-brown; smooth.
Although this fungus resembles Peziza
badia, P. badia fruits in the fall. The two species also
differ in spore morphology.
More information at RogersMushrooms.com:
Figure 1. Typical specimen of Peziza badioconfusa.
The cups become quite irregular in shape when
growing in clusters. Photo © William Roody