Nitella opaca
- kingdom: Plantae
- phylum: Charophyta
- class: Charophyceae
- order: Charales
- family: Characeae
- genus: Nitella
- species: Nitella opaca
Diest
Flanders
BelgiumNiederalteich
BavariaEmmerich
North Rhine-Westphalia
GermanyJussy
Geneva
SwitzerlandRichmond
IndianaCarter Lake
IowaChanute
KansasDanvers
MassachusettsCayuga Heights
East Ithaca
Ithaca
South Hill
Southold
New YorkCharlottesville
Virginia
United States