Publication: Beitrage zur Kenntniss der Gattung Najas. 8.
selected vouchers: WTU
Notes: We follow FNA in accepting the subspecies, but they seem poorly defined along arbitrary size diffences in the seeds, stems, and leaves.
Abrams & H&C uses the superfluous combination (Spreng.) Morong, made in 1893; we use the (Spreng.) Magnus combination made in 1870.