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Portulaca umbraticola subsp. umbraticola

Potamogeton × hagstroemii

Potamogeton × kochii

Potamogeton × nericus

Potamogeton × pusilliformis

Potamogeton × intermedius

Potamogeton × perplexus

Potamogeton × semenii

Potamogeton × semifructus

Potamogeton × subdentatus

Potamogeton × subobtusus

Potamogeton × vilnensis

Potamogeton floridanus

Potamogeton epihydrus

American pondweed

Potamogeton confervoides

Pseudognaphalium canescens subsp. canescens

Potamogeton pusillus subsp. pusillus

Potamogeton spirillus

Potamogeton lucens

Shining pondweed

Potamogeton natans

Floating-leaf pondweed