Alpine Pondweed, Northern Pondweed, Reddish Pondweed: Potamogeton alpinus (Synonyms: Potamogeton alpinus ssp. tenuifolius, Potamogeton alpinus var. subellipticus, Potamogeton alpinus var. tenuifolius, Potamogeton tenuifolius, Potamogegon tenuifolius var. subellipticus)
Ribbonleaf Pondweed, Ribbon-leaf Pondweed, Ribbon-leaved pondweed: Potamogeton epihydrus (Synonyms: Potamogeton epihydrus ssp. nuttallii, Potamogeton epihydrus var. ramosus)
Leafy Pondweed: Potamogeton foliosus ssp. foliosus (Synonyms: Potamogeton curtissii, Potamogeton foliosus var. macellus)
Fries' Pondweed: Potamogeton friesii
Grassy Pondweed, Variable Pondweed, Variableleaf Pondweed, Variable-leaved Pondweed: Potamogeton gramineus (Synonyms: Potamogeton gramineus var. maximus, Potamogeton gramineus var. myriophyllus)
Floating Pondweed, Floatingleaf Pondweed, Floating-leaved Pondweed: Potamogeton natans
Bluntleaf Pondweed: Potamogeton obtusifolius
Whitestem Pondweed, White-stemmed Pondweed: Potamogeton praelongus
Small Pondweed: Potamogeton pusillus ssp. tenuissimus (Synonyms: Potamogeton berchtoldii, Potamogeton berchtoldii var. colpophilus, Potamogeton berchtoldii var. lacunatus, Potamogton berchtoldii var. polyphyllus, Potamogeton berchtoldii var. tenuissimus, Potamogeton pusillus var. tenuissimus)
Richardson's Pondweed: Potamogeton richardsonii (Synonyms: Potamogeton perfoliatus ssp. richardsonii, Potamogeton perfoliatus var. richardsonii)
Flatstem Pondweed: Potamogeton zosteriformis (Synonyms: Potamogeton zosterifolius ssp. zosteriformis, Potamogeton zosterifolius var. americanus)
Fineleaf Pondweed, Threadleaf Pondweed: Stuckenia filiformis ssp. alpina (Synonyms: Potamogeton marinus, Potamogeton borealis, Potamogeton filiformis var. alpinus, Potamogeton filiformis var. borealis, Potamogeton filiformis var. macounii, Potamogeton interior, Potamogeton marinus var. alpinus, Potamogeton marinus var. macounii)
Sago Pondweed: Stuckenia pectinata (Synonym: Potamogeton pectinatus)