Browsing family Isoetaceae
- Isoetes appalachiana Brunton and Britton
- Isoetes engelmannii A. Braun
- Isoetes hyemalis Brunton
- Isoetes lacustris L.
- Isoetes mattaponica Musselman & W.C. Taylor
- Isoetes melanopoda Gay & Durieu ssp. silvatica Brunton & Britton
- Isoetes piedmontana (N.E. Pfeiffer) C.F. Reed
- Isoetes riparia Engelm. ex A. Braun
- Isoetes valida (Engelm.) Clute
- Isoetes virginica N.E. Pfeiffer
- Isoetes × altonharvillii Musselman & Bray
- Isoetes × bruntonii Knepper & Musselman
- Isoetes × carltaylori Musselman
- Isoetes × fairbrothersii Montgomery & Taylor?