Nitella opaca is a species of algae in the family Characeae.
Nitella opaca is a dioecious species very similar to Nitella flexilis and difficult to distinguish from it.
[1] Nitella opaca has been observed in fresh waters, mostly lakes.
[2] From the Latin adjective opaca, meaning "opaque", "not shining".
This green algae-related article is a stub.