Potamogeton berchtoldii var. lacunatus (Hagström) Fernald
Potamogeton berchtoldii var. lacunatus (Hagström) Fernald is a synonym sensu FNA Ed. Comm., 2000 of:
Potamogeton berchtoldii Fieber subsp. berchtoldii, an accepted subspecies name sensu WCSP.
Potamogeton berchtoldii var. lacunatus (Hagström) Fernald is a synonym sensu FNA Ed. Comm., 2000 of:
Potamogeton berchtoldii Fieber subsp. berchtoldii, an accepted subspecies name sensu WCSP.