Calamaria lacustris (L.) Kuntze
Calamaria setacea (Lam.) Kuntze
Isoetes atrovirens Th.Fr.
Isoetes braunii Durieu
Isoetes brochonii Motelay
Isoetes harveyi Eaton
Isoetes hieroglyphica A.A.Eaton
Isoetes lacustris subsp. abbreviata Gand.
Isoetes lacustris subsp. arvernensis Gand.
Isoetes lacustris subsp. brochonii (Motelay) Douin, 1934
Isoetes lacustris subsp. cambrica Gand.
Isoetes lacustris subsp. editorum Gand.
Isoetes lacustris subsp. errabunda Gand.
Isoetes lacustris subsp. hieroglyphica (A.A.Eaton) Taylor & Luebke
Isoetes lacustris subsp. lacustris
Isoetes lacustris subsp. lamottei Gand.
Isoetes lacustris subsp. langei Gand.
Isoetes lacustris subsp. latifolia Gand.
Isoetes lacustris subsp. noltei Gand.
Isoetes lacustris subsp. obscura Gand.
Isoetes lacustris subsp. pervaga Gand.
Isoetes lacustris subsp. rivalis Gand.
Isoetes lacustris subsp. rossica Gand.
Isoetes lacustris subsp. scanica Gand.
Isoetes lacustris subsp. scotica Gand.
Isoetes lacustris subsp. septentrionalis Gand.
Isoetes lacustris subsp. spreta Gand.
Isoetes lacustris subsp. succedanea Gand.
Isoetes lacustris subsp. suecica Gand.
Isoetes lacustris subsp. suecica Gdr.
Isoetes lacustris subsp. vergens Gand.
Isoetes lacustris var. curvifolia Casp.
Isoetes lacustris var. elatior Fliche, 1879
Isoetes lacustris var. falcata Gay
Isoetes lacustris var. falcatum Fliche, 1879
Isoetes lacustris var. humilior Motelay & Vendryès
Isoetes lacustris var. humilis Mer
Isoetes lacustris var. intermedia Mer
Isoetes lacustris var. lacustris
Isoetes lacustris var. leiospora Klinggr.
Isoetes lacustris var. morei (Moore) Hook.
Isoetes lacustris var. rectifolia Casp.
Isoetes lacustris var. recurva Motelay & Vendryès
Isoetes lacustris var. setacea Léman
Isoetes lacustris var. stricta (Gay) Mer
Isoetes lacustris var. stricta Motelay & Vendryès
Isoetes lacustris var. strictum J.Gay, 1863
Isoetes lacustris var. tenella Léman
Isoetes lacustris var. tenuifolia A.Braun
Isoetes lacustris var. tenuifolia A.Braun ex Milde
Isoetes lacustris var. terrestris Motelay & Vendryès
Isoetes lacustris var. vulgaris Casp.
Isoetes leiospora Klinggr.
Isoetes macrospora Durand
Isoetes macrospora f. hieroglyphica (A.A.Eaton) N.Pfeiff.
Isoetes moorei Moore
Isoetes muricata var. hesparia C.F.Reed
Isoetes petropolitana Gand.
Isoetes rossica Gand.
Isoetes setacea Lam.
Isoetes tenella Lem. ex Desv.
Isoetes tuckermani var. harveyi (Eaton) Clute
Isoetes ×lacustris Bertero