Synonyms
Isoetes lacustris var. strictum J.Gay
Isoetes lacustris var. minor Milde
Isoetes lacustris var. stricta Motelay & Vendryès
Isoetes lacustris var. falcatum Fliche
Isoetes lacustris var. elatior Fliche
Isoetes moorei Moore
Isoetes lacustris var. gracilis Gray
Isoetes lacustris var. fragilis Gray
Isoetes lacustris subsp. brochonii (Motelay) R.C.V.Douin
Calamaria lacustris (L.) Kuntze
Isoetes hieroglyphica A.A.Eaton