Peziza repanda

Scientific name:  Peziza repanda Wahlenberg.
Derivation of name:  The derivation of Peziza is
somewhat uncertain. One source indicates it is an
ancient term for a mushroom with little or no stalk.
Repand- means "folded backward, turned up" in
reference to the bent backward or turned down
margin observed in some specimens.
Synonyms: Aleuria repanda (Pers.) Gillet 
Common name(s):  Recurved cup
Phylum:   Ascomycota
Order:   Pezizales
Family:   Pezizaceae
Occurrence on wood substrate:  Saprobic; single
or clustered on decaying hardwood and adjacent
soil; spring through fall.  
Dimensions:  Cup to saucer-shaped, 6-12 cm
wide; stalkless but attached to wood by central
knob of tissue.  
Sterile outer surface:  Whitish, pale whitish-
brown; minutely pubescent.        
Fertile inner surface: Pale brown to dark brown;
smooth.
Comments: This fungus is often cup-shaped when
young, becoming nearly flat with age. There is
considerable taxonomic uncertainty surrounding the
species. As of 2025, it is recognzed as a distinct
species in Species Fungorum but DNA studies
indicate it may be synonymous with Peziza varia.

More information at MushroomExpert.com: 
  

Figure 1. Note the white sterile surface, brownish fertile
surface, and recurved margin on this specimen.
Photo © Steve Nelsen.
    

Figure 2. Specimens collected during the 2013 NEMF
foray in Rimouski, Canada. Photo © Gary Emberger.


Figure 3. A cluster of recurved cups. Photo © Steve Nelsen.