Sparganiaceae Bur-reed Family


Sparganium
 S. americanum Nutt. Bur-reed


 Potamogetonaceae Pondweed Family


Potamogeton
 P. capillaceus Poir. in Lam.
 P. diversifolius
 P. crispus L.
 P. foliosus Raf.
 P. Curtissii
 P. illinoensis Morong
 P. angustifolius, P. lucens
 P. nodosus Poir. in Lam.
 P. fluitans
 P. pectinatus L.
 P. perfoliatus L.
 P. pulcher Tuckerm.
 P. pusillus L.


Pondweeds


 Curlyleaf Pondweed


 Illinois Pondweed



 Sago Pondweed


Ruppiaceae Ditch-grass Family


Widgeon-grass


 Zannichelliaceae Horned Pondweed Family

Diplanthera
 D. wrightii (Aschers.) Aschers.
 Halodule Wrightii


Syringodium
 S. filiforme Kutz.
 Cymodocea manatorum

Zannichellia
 Z. palustris L.


Manatee-grass




Horned Pondweed


Ruppia
 R. maritima L.