Alpine Pondweed, Northern Pondweed, Reddish Pondweed: Potamogeton alpinus (Synonyms: Potamogeton alpinus ssp. tenuifolius, Potamogeton alpinus var. subellipticus, Potamogeton alpinus var. tenuifolius, Potamogeton tenuifolius, Potamogeton tenuifolus var. subellipticus) -
Broad-leaved Pondweed, Large-leaved Pondweed: Potamogeton amplifolius
Berchtold's Pondweed: Potamogeton berchtoldii (Synonyms: Potamogeton berchtoldii var. colpophilus, Potamogeton berchtoldii var. lacunatus, Potamogeton berchtoldii var. polyphyllus, Potamogeton berchtoldii var. tenuissimus, Potamogeton pusillus ssp. tenuissimus, Potamogeton pusillus var. tenuissimus)
Curled Pondweed: Potamogeton crispus
Ribbonleaf Pondweed, Ribbon-leaved Pondweed: Potamogeton epihydrus (Synonyms: Potamogeton epihydrus var. epihydrus, Potamogeton epihydrus ssp. nuttallii, Potamogeton epihydrus var. nuttallii, Potamogeton epihydrus var. ramosus) -
Leafy Pondweed: Potamogeton foliosus (Synonyms: Potamogeton curtissii, Potamogeton foliosus ssp. foliosus, Potamogeton foliosus var. foliosus, Potamogeton foliosus var. macellus)
Flat-stalked Pondweed: Potamogeton friesii
Grassy Pondweed, Variable Pondweed, Variableleaf Pondweed, Variable-leaved Pondweed: Potamogeton gramineus (Synonyms: Potamogeton gramineus var. gramineus, Potamogeton gramineus var. maximus, Potamogeton gramineus var. myriophyllus, Potamogeton heterophyllus) -
Floating Pondweed, Floating-leaf Pondweed, Floating-leaved Pondweed: Potamogeton natans -
Loddon's Pondweed, Long-leaf Pondweed, Long-leaved Pondweed: Potamogeton nodosus (Synonym: Potamogeton americanus)
White-stalked Pondweed, Whtiestem Pondweed, White-stemmed Pondweed: Potamogeton praelongus
Small Pondweed: Potamogeton pusillus (Synonyms: Potamogeton panormitanus, Potamogeton pusillus ssp. pusillus, Potamogeton pusillus var. minor, Potamogeton pusillus var. pusillus)
Fern Pondweed, Robbin's Pondweed: Potamogeton robbinsii
Eel-grass Pondweed, Flatstem Pondweed, Flat-stem Pondweed: Potamogeton zosteriformis
Slender-leaved Pondwee, Threadleaf Pondweed, Western Pondweed: Stuckenia filiformis (Synonyms: Potamogeton borealis, Potamogeton filiformis, Potamogeton filiformis var. alpinus, Potamogeton filiformis var. borealis, Potamogeton filiformis var. macounii, Potamogeton filiformis var. occidentalis, Potamogeton marinus f. alpinus, Potamogeton marinus var. alpinus, Potamogeton marinus var. macounii, Potamogeton marinus var. occidentalis, Stuckenia filiformis ssp. alpina, Stuckenia filiformis ssp. filiformis, Stuckenia filiformis ssp. occidentalis)
Fennel-leaved Pondweed, Sago Pondweed, Sago-pondweed: Stuckenia pectinata (Synonym: Potamogeton pectinatus)
Horned Pondweed: Zannichellia palustris (Synonym: Zannichellia palustris var. stenophylla)