Macrocystidia cucumis
- kingdom: Fungi
- phylum: Basidiomycota
- class: Agaricomycetes
- order: Agaricales
- family: Marasmiaceae
- genus: Macrocystidia
- species: Macrocystidia cucumis
- Eskilstuna
- Flen
- Nyköping
- Olstorp
- Vingåker
Södermanland- Storvreta
Uppsala- Bergeforsen
- Sundsvall
Västernorrland
Sweden