| Name | Nitella opaca var. atrovirens (J.Wallman) L.J.Wahlstedt | 
| Authorship | (J.Wallman) Wahlstedt | 
| Rank | Variety | 
| NomenclaturalStatus | Unknown | 
| Placed in | Nitella opaca (C. Agardh ex Bruzelius) C. Agardh | 
| Remarks | Created from Taxon Name Import: Nitella opaca var. atrovirens (J.Wallman) L.J.Wahlstedt | 
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Nitella opaca var. atrovirens (J.Wallman) L.J.Wahlstedt | 
| Identification made in | [no date] (2) |