Texas Vascular Plant Checklist:  Potamogetonaceae
The Pondweed Family
(Magnoliophyta, Liliopsida, Alismatidae)

 Potamogeton
   clystocarpus Fernald (little aguja pondweed)
   crispus L. (curly pondweed)
   diversifolius Raf. (waterthread pondweed)
   × faxonii Morong (pro sp.) [illinoensis × nodosus]
   foliosus subsp. foliosus (leafy pondweed)
   illinoensis Morong (shining pondweed, cornstalk pondweed)
   nodosus Poir. (long-leaf pondweed)
   perfoliatus L. (clasping leaf pondweed)
   pulcher Tuckerman (heartleaf pondweed)
   pusillus subsp. pusillus
   pusillus subsp. tenuissimus (Mert. & Koch) Haynes & C.B. Hellquist

 Stuckenia
   pectinata (L.) Boerner (sago false pondweed)
   striata (Ruiz & Pavòn) Holub (striped false pondweed)