Calamaria histrix (Bory) Kuntze, 1891 | Cephaloceraton gymnocarpum Gennari, 1862 | Cephaloceraton histrix (Bory) Gennari, 1862 | Cephaloceraton histrix var. subinerme Gennari, 1862 | Isoetes chaetureti Mendes, 1961 | Isoetes delalandei J.Lloyd, 1852 | Isoetes gymnocarpa (Gennari) A.Braun, 1864 | Isoetes histrix f. subinermis Durieu, 1861 [nom. nud.] | Isoetes histrix proles delalandei (J.Lloyd) Rouy, 1913 | Isoetes histrix proles sicula (Tod.) Rouy, 1913 | Isoetes histrix subsp. delalandei (J.Lloyd) P.Fourn., 1934 | Isoetes histrix subsp. sicula (Tod.) P.Fourn., 1934 | Isoetes histrix var. subinermis (Gennari) Durieu ex Motelay & Vendryès, 1883 | Isoetes sicula Tod., 1866 | Isoetes subinermis (Gennari) Cesca & Peruzzi, 2001