Potamogeton argutulus var. nodosifolius Potamogeton gramineus f. lanceolatifolius Potamogeton seemenii f. subcuspidatus Potamogeton gramineus subvar. lanceolatifolius Potamogeton seemenii f. lanceolatifolius Potamogeton seemenii var. lanceolatifolius Potamogeton seemenii var. subcuspidatus Potamogeton seemenii subvar. lanceolatifolius
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024