Synonyms
Isoetes longissima subsp. tenuissima (Boreau) Troìa & Greuter
Isoetes variabilis subsp. tenuissima (Boreau) R.C.V.Douin
Isoetes chaboissaei Hy
Isoetes viollaei Hy
Isoetes variabilis var. tenuissima (Boreau) P.Fourn.
Isoetes variabilis var. viollaei (Hy) P.Fourn.
Isoetes variabilis var. chaboissaei (Hy) P.Fourn.