Summary description from Wikipedia:

Potamogeton illinoensis in languages:

English

shining pondweed

English

Illinois pondweed

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Parent Taxon

• Potamogeton

Sibling Taxa

• Potamogeton acutifolius
• Potamogeton alpinus
• Potamogeton amplifolius
• Potamogeton australiensis
• Potamogeton berchtoldii
• Potamogeton bicupulatus
• Potamogeton biformis
• Potamogeton cheesemanii
• Potamogeton coloratus
• Potamogeton compressus
• Potamogeton confervoides
• Potamogeton crispus
• Potamogeton cristatus
• Potamogeton distinctus
• Potamogeton diversifolius
• Potamogeton drummondii
• Potamogeton epihydrus
• Potamogeton ferrugineus
• Potamogeton floridanus
• Potamogeton foliosus
• Potamogeton friesii
• Potamogeton gayi
• Potamogeton gramineus
• Potamogeton gramineus × lucens
• Potamogeton gramineus × perfoliatus
• Potamogeton groenlandicus
• Potamogeton hillii
• Potamogeton illinoensis
• Potamogeton linguatus
• Potamogeton lucens
• Potamogeton lucens × perfoliatus
• Potamogeton maackianus
• Potamogeton malaianus
• Potamogeton mandschuriensis
• Potamogeton marianensis
• Potamogeton methyensis
• Potamogeton montezumawellensis
• Potamogeton natans
• Potamogeton nodosus
• Potamogeton oakesianus
• Potamogeton oblongus
• Potamogeton obtusifolius
• Potamogeton ochreatus
• Potamogeton octandrus
• Potamogeton oxyphyllus
• Potamogeton parmatus
• Potamogeton perfoliatus
• Potamogeton polygonifolius
• Potamogeton praelongus
• Potamogeton pulcher
• Potamogeton pusillus
• Potamogeton richardii
• Potamogeton richardsonii
• Potamogeton robbinsii
• Potamogeton rutilus
• Potamogeton sarmaticus
• Potamogeton schweinfurthii
• Potamogeton sibiricus
• Potamogeton spirillus
• Potamogeton strictifolius
• Potamogeton suboblongus
• Potamogeton sulcatus
• Potamogeton tennesseensis
• Potamogeton tepperi
• Potamogeton tricarinatus
• Potamogeton trichoides
• Potamogeton vaseyi
• Potamogeton wrightii
• Potamogeton zosteriformis
• Potamogeton × absconditus
• Potamogeton × aemulans
• Potamogeton × angustifolius
• Potamogeton × assidens
• Potamogeton × bennettii
• Potamogeton × billupsii
• Potamogeton × cadburyae
• Potamogeton × cognatus
• Potamogeton × cooperi
• Potamogeton × faxonii
• Potamogeton × fluitans
• Potamogeton × gessnacensis
• Potamogeton × griffithii
• Potamogeton × hagstromii
• Potamogeton × haynesii
• Potamogeton × lanceolatus
• Potamogeton × mysticus
• Potamogeton × nitens
• Potamogeton × ogdenii
• Potamogeton × olivaceus
• Potamogeton × prussicus
• Potamogeton × pseudofriesii
• Potamogeton × rectifolius
• Potamogeton × rivularis
• Potamogeton × salicifolius
• Potamogeton × saxonicus
• Potamogeton × schreberi
• Potamogeton × scoliophyllus
• Potamogeton × sparganiifolius
• Potamogeton × spathuliformis
• Potamogeton × subsessilis
• Potamogeton × sudermanicus
• Potamogeton × undulatus

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