Diderma effusum
- kingdom: Protozoa
- phylum: Mycetozoa
- class: Myxomycetes
- order: Physarales
- family: Didymiaceae
- genus: Diderma
- species: Diderma effusum
Hinterzarten
Baden-Württemberg
GermanyGöteborg
Västra Götaland
SwedenManhattan
KansasKittery Point
MaineNew Castle
New HampshireClyde
East Norwich
Oyster Bay
Syosset
New YorkKingston
Rhode Island
United States