Bisporella citrina
Scientific name: Bisporella citrina (Batsch) Korf & S. E. Carp.
Derivation of name: Citrin- means "lemon-yellow." Synonyms: Helotium citrinum; Calycella citrina Common name(s): Yellow fairy cups
Phylum: Ascomycota
Order: Helotiales
Family: Helotiaceae
Occurrence on wood substrate: Saprobic; in clusters on decaying wood; summer through fall.
Dimensions: Cups are 1-3 mm wide; stalkless or with thick, stalk-like base.
Sterile outer surface: Bright lemon-yellow to golden- yellow; smooth.
Fertile inner surface: Same coloration as sterile surface; smooth.
Edibility: Unknown
Comments: Although individually tiny, these fungi often occur in such large numbers that they become quite conspicuous.