Potamogeton dentatus

Potamogeton dentatus is a pondweed accepted as a distinct species and native only to Japan, in central Honshu and on Kyushu.¹ This aquatic plant of temperate regions persists by means of a rhizome in the bottom of the water body; Potamogeton lucens var. teganumensis and Potamogeton teganumensis are treated as synonyms, so it has also been listed as a variety of P. lucens.¹

In the aquarium this stem plant grows fast and can reach 50–60 cm in height; it is considered moderately difficult, its light requirement is given as medium, and CO₂ supplementation is recommended.² It is suitable for the midground and background, propagates by runners and cuttings and does not grow emersed.