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Isoetaceae Dumort. Anal. Fam. Pl. : 67 (1829) [wfo-7000000301]synonym Bothriaceae Dulac Fl. Hautes-Pyrenées 38 (1867) [wfo-4100004341] synonym Isoetoideae A.Gray Bot. Text, ed. 5: 502 (1858) [wfo-4100004447] Isoetes L. Observ. Bot. (Weigel) 36, t. 2. f. 7 (1772) [wfo-4000019273]synonym Calamaria Boehm. Def. Gen. Pl., ed. 3. 500 (1760) [wfo-4000005940] synonym Cephaloceraton Gennari Comment. Soc. Crittog. Ital. 1: 111 (1862) [wfo-4000007245] synonym Isoetella Gennari Comment. Soc. Crittog. Ital. 1: 114 (1862) [wfo-4000019272] synonym Sivetes Raf. Med. Repos., ser. 2, 5: 358 (1808) [wfo-4100004567] synonym Stylites Amstutz Ann. Missouri Bot. Gard. 44: 121 (1957) [wfo-4000036992] I. abyssinica Chiov. Atti Soc. Naturalisti Mat. Modena 64: 45, f.1 (1933) [wfo-0001329450] I. aequinoctialis Welw. ex A.Br. Sitzungsber. Ges. Naturf. Freunde Berlin 7 (1867) [wfo-0001110716]synonym Calamaria aequinoctialis (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123848] synonym Isoetes erongensis Wannt. Svensk Bot. Tidskr. 64: 150, f.5, t.2,3 (1970) [wfo-0001110717] I. afloramientorum D.F.Brunt. & J.B.S.Pereira Phytotaxa 451(3): 219 (2020) [wfo-1000023284] I. alpina Kirk Trans. & Proc. New Zealand Inst. 7: 377 (t.25) (1875) [wfo-0001043346]synonym Calamaria alpina (Kirk) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068033] synonym Isoetes kirkii var. alpina (Kirk) C.R.Marsden & Chinnock not validly published (Thesis only) [wfo-1200103486] synonym Isoetes multiangularis Colenso Trans. & Proc. New Zealand Inst. 22: 449 (1890) [wfo-1000068675] I. altonharvillii Musselman & R.D.Bray Castanea 60: 246 (1995) [wfo-0001272537] I. amazonica A.Braun J. Bot. 18: 109 (1880) [wfo-0001268483]synonym Calamaria amazonica (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001417187] I. anamariae J.B.S.Pereira Amer. Fern J. 112(3): 194 (2022) [wfo-1000047148] I. anatolica Prada & Rolleri Bot. J. Linn. Soc. 147(2): 215 (213-228; figs.) (2005) [wfo-0001331417] I. andicola (Amstutz) L.D.Gómez Brenesia n.° 18: 4 (1981) [wfo-0001114204]basionym Stylites andicola Amstutz Ann. Missouri Bot. Gard. 44: 121 (-122), fig. (1957) [wfo-0001114205] synonym Isoetes andicola (Amstutz) H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 84(2): 177 (1981) [wfo-1000074561] synonym Isoetes andicola var. gemmifera (Rauh) L.D.Gómez Brenesia 18: 4 (1981) [wfo-0001114207]basionym Stylites gemmifera Rauh Sitzungsber. Heidelberger Akad. Wiss., Math.-Naturwiss. Kl. 1959(1): 11 (1959) [wfo-0001114206] synonym Stylites andicola Amstutz Ann. Missouri Bot. Gard. 44: 121 (-122), fig. (1957) [wfo-0001114205]homotypic Isoetes andicola (Amstutz) L.D.Gómez Brenesia n.° 18: 4 (1981) [wfo-0001114204] synonym Stylites gemmifera Rauh Sitzungsber. Heidelberger Akad. Wiss., Math.-Naturwiss. Kl. 1959(1): 11 (1959) [wfo-0001114206]homotypic Isoetes andicola var. gemmifera (Rauh) L.D.Gómez Brenesia 18: 4 (1981) [wfo-0001114207] I. andina Spruce ex Hook. Brit. Ferns [W. J. Hooker] ad t.55. 1861 [wfo-0001126445]synonym Calamaria triquetra (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001230835] synonym Isoetes andina Spruce Actes Soc. Linn. Bord. 36: 325 (1883) [wfo-1000074435] synonym Isoetes lechleri var. triquetra (A.Braun) L.D.Gómez Brenesia 18: 5 (1981) [wfo-0001230836] synonym Isoetes triquetra A.Braun Verh. Bot. Vereins Prov. Brandenburg 4: 332 (1862) [wfo-0001119970] I. angeloi D.F.Brunt. & K.L.McIntosh Bot. Lett. 170(2): 281 (2022) [wfo-1000049893] I. appalachiana D.F.Brunt. & D.M.Britton Rhodora 99(898): 129 (1997) [wfo-0001247370]synonym Isoetes engelmannii var. fontana A.A.Eaton Fern Bull. 13: 52 (1905) [wfo-0001372517] synonym Isoetes engelmannii f. fontana (A.A.Eaton) Clute Fern-Allies 258 (1905) [wfo-1200106656] synonym Isoetes engelmannii f. georgiana (Engelm.) Clute Fern Allies 258 (1905) [wfo-0001403022] synonym Isoetes engelmannii var. georgiana Engelm. Trans. Acad. Sci. St. Louis 4: 384. 1882 [wfo-0001410813] I. araucaniana Macluf & Hickey Amer. Fern J. 97(4): 220 (-224; f.1-10) (2008) [wfo-0001328987] I. asiatica (Makino) Makino Bot. Mag. (Tokyo) 28: 184 (1914) [wfo-0001110242]synonym Isoetes echinospora subsp. asiatica (Makino) Á.Löve Amer. Fern J. 52: 121 (1962) [wfo-0001118058] synonym Isoetes echinospora var. asiatica Makino Bot. Mag. (Tokyo) 18: 129. 1904 [wfo-0001410811] synonym Isoetes muricata subsp. asiatica (Makino) H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 85(2): 239 (1982) [wfo-0001359185] synonym Isoetes setacea subsp. asiatica (Makino) Holub Acta Horti Bot. Prag. 1962: 55 (1962) [wfo-0001118061] I. attenuata C.R.Marsden & Chinnock Fl. Australia 48: 705 (1998) [wfo-0001328506] I. australis S.Williams Proc. Roy. Soc. Edinburgh, B 62(1): 1-8 (1943) [wfo-0001275944] I. azorica Durieu Fil. Eur. 278 (1867) [wfo-0001250557]homotypic Calamaria azorica (Durieu) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068034] synonym Calamaria azorica (Durieu) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068034] I. baculata Hickey & H.P.Fuchs Syst. Bot. 11: 310, fig. (1986) [wfo-0001114608] I. baodongii Y.F.Gu, Y.H.Yan & Yi Jun Lu Novon 29: 207 (2021) [wfo-1000027498] I. biafrana Alston Bol. Soc. Brot. sér. 2A, 30: 15 (1956) [wfo-0001111710] I. bilaspurensis Panigrahi Biol. Mem. 6(2): 135 (1981) [wfo-0001328374]synonym Isoetes mahadevensis G.K.Srivast., D.D.Pant & P.K.Shukla Amer. Fern J. 83(4): 106 (1993) [wfo-0001275945] I. bischlerae H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 85(1): 113 (1982) [wfo-0001280309] I. blondeaui D.F.Brunt. & P.C.Sokoloff Botany (Ottawa) 98(10): 558 (2020) [wfo-1000023281] I. bolanderi Engelm. Amer. Naturalist 8: 214 (1874) [wfo-0001108949]synonym Calamaria bolanderi (Engelm.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001109700] synonym Calamaria pygmaea (Engelm.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001417191] synonym Isoetes bolanderi var. parryi Engelm. Amer. Naturalist 8: 214 (1874) [wfo-0001110944] synonym Isoetes bolanderi var. pygmaea Clute Fern Allies 228, 258. 1905 [wfo-0001111834]basionym Isoetes pygmaea Engelm. Amer. Naturalist 8: 214 (1874) [wfo-0001120043] synonym Isoetes bolanderi f. pygmaea (Engelm.) Clute Fern Bull. 16: 54 (1908) [wfo-1200106651] synonym Isoetes bolanderi var. sonnei L.F.Hend. Bull. Torrey Bot. Club 27: 358 (1900) [wfo-0001372516] synonym Isoetes californica Engelm. Manual (ed. 5) 677 1867 [wfo-0001111112] synonym Isoetes parryi Engelm. Actes Soc. Linn. Bordeaux 36: 338 (1883) [wfo-1000068678] synonym Isoetes pygmaea Engelm. Amer. Naturalist 8: 214 (1874) [wfo-0001120043]homotypic Isoetes bolanderi var. pygmaea Clute Fern Allies 228, 258. 1905 [wfo-0001111834] I. boliviensis U.Weber Hedwigia 63: 247, f.14,15 (1922) [wfo-0001120308] I. boryana Durieu Bull. Soc. Bot. France 8: 164 (1861) [wfo-0001276667]synonym Calamaria boryana (Durieu) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068035] synonym Isoetes boryana subsp. brevis Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103415] synonym Isoetes boryana subsp. condensata Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103416] synonym Isoetes boryana subsp. frigida Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103417] synonym Isoetes boryana subsp. gredensis Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103418] synonym Isoetes boryana subsp. legitima Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103419] synonym Isoetes boryana subsp. praetervisa Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103420] synonym Isoetes variabilis prol. boryana (Durieu) Rouy Fl. France [Rouy & Foucaud] 14: 477 (1913) [wfo-1200106688] synonym Isoetes variabilis subsp. boryana (Durieu) P.E.Fourn. Quatre Fl. France: 5 (1934), nom. illeg. [wfo-1200103552] synonym Isoetes velata var. boryana (Durieu) M.I.Romero & Real Bot. J. Linn. Soc. 148(4): 464 (2005) [wfo-0001382743] I. boyacensis H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 85(1): 107 (1982) [wfo-0001280310] I. brasiliensis H.P.Fuchs Fl. Ilustr. Catarin. 1(Isoet.): 27 (1986) [wfo-0001318387]synonym Isoetes reitzii H.P.Fuchs (1979), nom. nud. pro syn. [wfo-1000068683] I. brevicula E.R.L.Johnson J. Roy. Soc. Western Australia 67(1): 34 (1984) [wfo-0001328377] I. brittonii D.F.Brunt. & W.C.Taylor Amer. Fern J. 80: 85 (1990) [wfo-0001120197] I. brochonii Motelay Actes Soc. Linn. Bordeaux 45: 45 (1892) [wfo-1000036300]synonym Isoetes lacustris subsp. brochonii (Motelay) R.C.V.Douin Bonnier, Fl. Ill. France 12: 117 (1934) [wfo-1200103489] I. bruntonii Knepper & Musselman Amer. Fern J. 86: 9 (1996) [wfo-0001249685] I. butleri Engelm. Bot. Gaz. 3(1): 1 1878 [wfo-0001108950]synonym Calamaria butleri (Engelm.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001110679] synonym Isoetes butleri f. immaculata (Engelm.) Clute Fern Allies 258 (1905) [wfo-1200103421] synonym Isoetes butleri var. immaculata Engelm. Trans. Acad. Sci. St. Louis 4: 388 (1882) [wfo-1200106652] I. candelariensis C.C.Macluf & G.J.Marquez Anais Acad. Brasil. Ci. 96(1)-e20230087: 3 (2024) [wfo-1000065088] I. cangae J.B.S.Pereira, Salino & Stützel Phytotaxa 272(2): 145 (2016) [wfo-0001318388] I. caparaoensis J.B.S.Pereira Bot. J. Linn. Soc. 189(1): 15 (2018) [wfo-1000005075] I. capensis A.V.Duthie Trans. Roy. Soc. South Africa 17: 330 (1929) [wfo-0001420729] I. carltaylori Musselman Canad. J. Bot. 75: 303 (1997) [wfo-0001249684] I. caroli E.R.L.Johnson J. Roy. Soc. Western Australia 67(1): 34 (1984) [wfo-0001328378] I. caroliniana (A.A.Eaton) Luebke Amer. Fern J. 82: 26 (1992) [wfo-0001114601]basionym Isoetes engelmannii var. caroliniana A.A.Eaton Fern Bull. 8: 60 (1900) [wfo-0001110682] synonym Isoetes engelmannii var. caroliniana A.A.Eaton Fern Bull. 8: 60 (1900) [wfo-0001110682]homotypic Isoetes caroliniana (A.A.Eaton) Luebke Amer. Fern J. 82: 26 (1992) [wfo-0001114601] I. changleensis Yu C.Chen & Xing Liu Phytotaxa 642(1): 41 (2024) [wfo-1000062615] I. changxingensis Y.F.Gu & J.H.Shen Guihaia 44(4): 613 (2024) [wfo-1000064566] I. chubutiana Hickey, Macluf & W.C.Taylor Amer. Fern J. 93(3): 130 (-136; f.4-10) (2003) [wfo-0001420622]synonym Isoetes savatieri subsp. valdiviensis H.P.Fuchs (1992), nom. nud. [wfo-1200103534] synonym Isoetes valdiviensis H.P.Fuchs (1960), nom. nud. [wfo-1000068691] I. cipoensis J.B.S.Pereira Syst. Bot. 47(2): 301 (2022) [wfo-1000040859] I. coreana Y.H.Chung & H.K.Choi Korean J. Pl. Taxon. 16(1): 2 (1986) [wfo-1000067357]synonym Isoetes sinensis var. coreana (Y.H.Chung & H.K.Choi) M.Takamiya, Mits.Watan. & K.Ono Acta Phytotax. Geobot. 48(2): 112 (1998) [wfo-0001375427] I. coromandelina L.f. Suppl. Pl. ed. 13: 447 (1782) [wfo-0001123852]homotypic Calamaria coromandelina (L.f.) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123854] I. coromandelina subsp. coromandelina Suppl. Pl. 447 (1781) [wfo-0001360582]synonym Calamaria coromandelina (L.f.) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123854]basionym Isoetes coromandelina L.f. Suppl. Pl. ed. 13: 447 (1782) [wfo-0001123852] synonym Isoetes brachyglossa A.Braun Verh. Bot. Vereins Prov. Brandenburg 4: 327 1862 [wfo-0001123853] synonym Isoetes capsularis Roxb. ex Griff. Posth. Papers Cryptog. Pl. 572-575, t. 116-118 (1849), non Roxb. 1844 [wfo-1000068652] synonym Isoetes coromandelina subsp. brachyglossa (A.Braun) Panigrahi Biol. Mem. 6(2): 131. 1981 [1981?] [wfo-0001359145] synonym Isoetes coromandelina var. raipurensis Unni J. Bombay Nat. Hist. Soc. 64: 590-592 (1967) (fide Fraser-Jenkins 1997) [wfo-1200103424] synonym Isoetes coromandelina subsp. thanensis S.K.Shukla, Sarv.K.Singh, P.K.Shukla, N.K.Dubey, H.Khanam & G.K.Srivast. Taiwania 62(2): 122 (2017) [wfo-1200101569] synonym Isoetes debii S.C.Sinha Frontiers Bot. 4-6: 69 (1992) [wfo-1000073918] synonym Isoetes debii P.K.Shukla, G.K.Srivast. & S.K.Shukla Frontiers Bot. 4-6: 69-72 (2002), nom. inval. [wfo-1000068658] synonym Isoetes fuchsii H.K.Goswami & U.S.Sharma Bionature (Bhopal) 21: 11-18 (2001) [wfo-1000073557] synonym Isoetes fuchsii Bhu, H.K.Goswami, U.S.Sharma & A.K.Bajpai J. Advancem. Pl. Sci. 2(1)-1: 4. 2019 [wfo-1000032757] synonym Isoetes indica D.D.Pant & G.K.Srivast. Proc. Natl. Inst. Sci. India, B 28: 246, t.14-16, f.4-7 (1962) [wfo-0001269472] synonym Isoetes indica var. harotiensis Bhardwaja & Gena Aspects Pl. Sci. 14: 495-499 (1992), nom. nud. [wfo-1200103485] synonym Isoetes mirzapurensis Panigrahi & R.D.Dixit Proc. Indian Sci. Congr. Assoc. 53(3, sect. 5): 243 (1966) [wfo-0001330604] synonym Isoetes narsinghgarhensis H.K.Goswami & Mazumdar J. Advancem. Pl. Sci. 2(1)-1: 5 (2019) [wfo-1000032759] synonym Isoetes pantii H.K.Goswami & B.S.Arya J. Indian Bot. Soc. 49: 30 (1971) [wfo-0001248997] synonym Isoetes pantii var. hybrida H.K.Goswami Indian Fern J. 21(1-2): 152 (-153; photo) (2004) [wfo-0001382739] synonym Isoetes semilocularis Sm. Cycl. [A. Rees] (London ed.) 19: 150 (1819) [wfo-1000068687] synonym Isoetes tuberculata Gena & Bhardwaja J. Bombay Nat. Hist. Soc. 81(1): 167 (1984) [wfo-0001221697] synonym Isoetes unilocularis Roxb. ex Sm. Cycl. [A. Rees], (London ed.) 19(1): [s.n.], Isoetes no. 3 (1811) [wfo-0001330505] I. coromandelina subsp. macrotuberculata C.R.Marsden Contr. Herb. Austral. 24: 2 (1976) [wfo-0001405411] I. creussensis Lazare & S.Riba J. Bot. Soc. Bot. France 50: 21 (-24; figs.) (2010) [wfo-0001331705] I. cristata C.R.Marsden & Chinnock Fl. Australia 48: 704 (1998) [wfo-0001328505] I. cubana Engelm. J. Bot. 18: 110 1880 [wfo-0001114185]homotypic Calamaria cubana (Engelm.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001121341] synonym Calamaria cubana (Engelm.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001121341] I. delalandei J.Lloyd Notes Fl. Ouest France 25 (1852) [wfo-1000035521]synonym Isoetes histrix prol. delalandei (J.Lloyd) Rouy Fl. France [Rouy & Foucaud] 14: 481 (1913) [wfo-1200106660] synonym Isoetes histrix subsp. delalandei (J.Lloyd) P.E.Fourn. Quatre Fl. France: 6 (1934) [wfo-1200103460] synonym Isoetes histrix var. delalandei (J.Lloyd) Rouy Fl. France [Rouy & Foucaud] 14: 481 (1913) [wfo-1200107037] I. delilei (Bory) Rothm. Feddes Repert. Spec. Nov. Regni Veg. 54: 72 (1944) [wfo-0001115149]synonym Isoetes montana U.Weber Hedwigia 63: 254, figs. 38, 39 (1922) [wfo-0001121345] synonym Isoetes palustris var. setacea F.Muell. Milde, Fil. Eur. 9: 280 (1867) [wfo-1200103533] synonym Isoetes setacea Bosc ex Delile Mem. Mus. Paris 14(110): 117, t. 6-7 (1827) [wfo-1000074512] synonym Isoetes setacea var. delilei Bory Compt. Rend. Hebd. Séances Acad. Sci. 18: 1164 (-1165) (1844) [wfo-0001383446] I. dodgei A.A.Eaton Fern Bull. 6: 6 (1898) [wfo-0001111245]synonym Isoetes canadensis (Engelm.) A.A.Eaton Proc. U. S. Natl. Mus. 23: 650 (1901) [wfo-0001114611] synonym Isoetes riparia f. canadensis (Engelm.) Proctor Amer. Fern J. 39: 119. 1949 [wfo-0001403024] synonym Isoetes riparia var. canadensis Engelm. Trans. Acad. Sci. St. Louis 4: 383 (1882) [wfo-0001410818] I. drummondii A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1868: 542 (1868) [wfo-0001123834]I. drummondii subsp. anomala C.R.Marsden & Chinnock Muelleria 8(1): 58. 1993 [wfo-0001405412] I. drummondii subsp. drummondii Monatsber. Königl. Preuss. Akad. Wiss. Berlin 593 (1863) [wfo-0001359097]synonym Calamaria drummondii (A.Braun) Kuntze Revis. Gen. Pl. (1891) [wfo-0001328006] I. duriei Bory Compt. Rend. Hebd. Séances Acad. Sci. 18: 1166 (1846) [wfo-0001274845]homotypic Isoetella duriei (Bory) Gennari Comment. Soc. Crittog. Ital. 1: 114 1862 [wfo-0001035145] synonym Calamaria durieui (Bory) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068037] synonym Isoetella duriei (Bory) Gennari Comment. Soc. Crittog. Ital. 1: 114 1862 [wfo-0001035145]basionym Isoetes duriei Bory Compt. Rend. Hebd. Séances Acad. Sci. 18: 1166 (1846) [wfo-0001274845] synonym Isoetes duriaei subsp. balearica Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103427] synonym Isoetes duriaei subsp. felix Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103428] synonym Isoetes duriaei subsp. insularis Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103429] synonym Isoetes duriaei subsp. kabylica Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103430] synonym Isoetes duriaei subsp. leptophylla Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103431] synonym Isoetes duriaei subsp. ligustica De Not. Index Filic. Cult. [Kunze] 51 (1850) [wfo-1200103432] synonym Isoetes duriaei subsp. litorea Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103433] synonym Isoetes duriaei subsp. lusitanica Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103434] synonym Isoetes duriaei subsp. maritima Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103435] synonym Isoetes duriaei subsp. sardoa Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103436] synonym Isoetes ligustica De Not. ex A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin Sitzung 7 Dec (1863) [wfo-1000068672] synonym Isoetes tridentata Durieu Fil. Afr. [Kuhn] 195 (1867) [wfo-1000068690] I. eatonii R.Dodge Ferns & Fern Allies New England 39 (1896) [wfo-0001108951]synonym Isoetes eatoni R.Dodge Ferns & Fern Allies New England 39 (1896) [wfo-1000068660] synonym Isoetes eatoni f. gravesii (A.A.Eaton) C.F.Reed Amer. Fern J. 35: 82 (1945) [wfo-1200103437] synonym Isoetes eatoni var. gravesii (A.A.Eaton) Clute Fern Bull. 16: 55 (1908) [wfo-1200106653] synonym Isoetes eatonii f. gravesii (A.A.Eaton) C.F.Reed Amer. Fern J. 35: 82. 1945 [wfo-0001403017] synonym Isoetes gravesii A.A.Eaton Fernwort Pap. 14 (1900) [wfo-0001111243] synonym Isoetes valida var. gravesii (A.A.Eaton) Clute Fern Allies 243 (1905) [wfo-0001410825] I. echinospora Durieu Bull. Soc. Bot. France 8: 164 (1861) [wfo-0001107321]synonym Calamaria echinospora (Durieu) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000074117] synonym Isoetes ambigua A.Braun Engelm., Trans. Acad. Sci. St. Louis 4: 380 (1882) [wfo-1000068644] synonym Isoetes boottii A.Braun Engelm., Manual (Gray), ed. 5: 676 (1867) [wfo-1000068651] synonym Isoetes braunii Durieu Bull. Soc. Bot. France 11: 101 (1864) [wfo-1000074884] synonym Isoetes braunii f. astoma (Iversen) M.Broun Index No. Amer. Ferns 99 (1938) [wfo-0001403013] synonym Isoetes braunii f. oligostoma (Iversen) M.Broun Index No. Amer. Ferns 99 (1938) [wfo-0001403014] synonym Isoetes braunii f. polystoma (Iversen) M.Broun Index No. Amer. Ferns 99 (1938) [wfo-0001403015] synonym Isoetes echinospora subsp. admixta Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103438] synonym Isoetes echinospora subf. angusstivelata Iversen Bot. Tidsskr. 40: 129 (1928) [wfo-0001358135] synonym Isoetes echinospora subf. angustivelata Iversen Bot. Tidsskr. 40: 128, f.a-c (1928) [wfo-0001404284] synonym Isoetes echinospora f. astoma Iversen Bot. Tidsskr. 40: 129 (1928) [wfo-0001403018] synonym Isoetes echinospora subsp. belgica Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103439] synonym Isoetes echinospora var. boothii Clute Ferns Northwest [Frye] 39 (pro syn.) (1934) [wfo-1200103453] synonym Isoetes echinospora var. boottii Engelm. Manual (ed. 5) 676 1867 [wfo-0001371220] synonym Isoetes echinospora f. boottii (Engelm.) Clute Fern Allies 258. 1905 [wfo-0001321545] synonym Isoetes echinospora subsp. borealis Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103440] synonym Isoetes echinospora var. braunii (Durieu) Engelm. Manual [Gray], ed. 5 676 (1867) [wfo-0001109696] synonym Isoetes echinospora var. braunii (Durieu) Á.Löve & D.Löve 49 (1961), isonym [wfo-1200107209] synonym Isoetes echinospora var. brittonii Cockerell Muhlenbergia 3: 9. 1907 [wfo-0001408849] synonym Isoetes echinospora subsp. centralis Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103441] synonym Isoetes echinospora subsp. discedens Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103442] synonym Isoetes echinospora var. elatior Fliche Mém. Acad. Stanislas IV, 11 (1878): 182 (1879) [wfo-1200103455] synonym Isoetes echinospora subsp. fennica Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103443] synonym Isoetes echinospora subsp. gothica Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103444] synonym Isoetes echinospora var. hesperia (C.F.Reed) Á.Löve Amer. Fern J. 52: 121 (1962) [wfo-0001410812] synonym Isoetes echinospora subf. lativelata Iversen Bot. Tidsskr. 40: 129, f.d (1928) [wfo-0001404285] synonym Isoetes echinospora subsp. montana Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103445] synonym Isoetes echinospora var. muricata (Durieu) Engelm. Manual : 676 (1867) [wfo-0001109697]basionym Isoetes muricata Durieu Bull. Soc. Bot. France 11: 100 (1864) [wfo-0001109695] homotypic Isoetes echinospora subsp. muricata (Durieu) Á.Löve & D.Löve Bot. Not. 114: 49 (1961) [wfo-0001107322] synonym Isoetes echinospora subsp. muricata (Durieu) Á.Löve & D.Löve Bot. Not. 114: 49 (1961) [wfo-0001107322]basionym Isoetes muricata Durieu Bull. Soc. Bot. France 11: 100 (1864) [wfo-0001109695] homotypic Isoetes echinospora var. muricata (Durieu) Engelm. Manual : 676 (1867) [wfo-0001109697] synonym Isoetes echinospora subsp. oligophylla Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103446] synonym Isoetes echinospora f. oligostoma Iversen Bot. Tidsskr. 40: 129 (1928) [wfo-0001403019] synonym Isoetes echinospora subsp. petropolitana Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103447] synonym Isoetes echinospora f. polystoma Iversen Bot. Tidsskr. 40: 128 (1928) [wfo-0001403020] synonym Isoetes echinospora subsp. praebens Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103448] synonym Isoetes echinospora subsp. pulchella Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103449] synonym Isoetes echinospora subsp. pygmaea Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103450] synonym Isoetes echinospora subsp. remissa Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103451] synonym Isoetes echinospora subsp. vogesiaca Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103452] synonym Isoetes lacustris var. crassa Léman Dict. Sci. Nat., ed. 2 [F. Cuvier] 24: 24 (1822) [wfo-1200103509] synonym Isoetes lacustris subsp. curvifolia (Casp.) Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103491] synonym Isoetes lacustris subsp. echinospora (Durieu) T.Moore & More Contr. Cybele Hiber.: 381 (1866) [wfo-1200106673] synonym Isoetes lacustris subsp. echinospora (Durieu) Syme & N.E.Br. Engl. Bot., 3rd ed., vol. XII: 7 (1886) [wfo-1200106672] synonym Isoetes lacustris subsp. echinospora (Durieu) Hook.f. Student. Fl. Brit. Isl., ed. 1, 471 (1870), isonym [wfo-1200103492] synonym Isoetes lacustris var. elatior (Fliche) Mer Bull. Soc. Bot. France 28: 73 (1881) [wfo-1200103510] synonym Isoetes lacustris var. longifolia Motelay & Vendryès Actes Soc. Linn. Bordeaux 36: 327 (1883) [wfo-1200101570] synonym Isoetes lacustris var. minor (A.Braun ex Milde) Motelay & Vendryès Actes Soc. Linn. Bordeaux 36: 327 (1883) [wfo-1200103520] synonym Isoetes lacustris var. recurvata Motelay & Vendryès Actes Soc. Linn. Bordeaux 36: 327 (1883) [wfo-1200103524] synonym Isoetes muricata Durieu Bull. Soc. Bot. France 11: 100 (1864) [wfo-0001109695]homotypic Isoetes echinospora subsp. muricata (Durieu) Á.Löve & D.Löve Bot. Not. 114: 49 (1961) [wfo-0001107322] homotypic Isoetes echinospora var. muricata (Durieu) Engelm. Manual : 676 (1867) [wfo-0001109697] synonym Isoetes muricata var. braunii (Engelm.) C.F.Reed Amer. Fern J. 35: 83 (1945) [wfo-0001410816] synonym Isoetes setacea subsp. monspeliensis Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103535] synonym Isoetes setacea subsp. muricata (Durieu) Holub Acta Horti Bot. Prag. 1964: 55 (1964) [wfo-1200103536] synonym Isoetes setacea subsp. stricta Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103537] synonym Isoetes setacea subsp. turgida Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103538] synonym Isoetes setacea subsp. valida Gand. Fl. Eur. [Gand.] 27: 196 (1891) [wfo-1200103539] synonym Isoetes setacea subsp. vicina Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103540] synonym Isoetes tenella f. astoma (Iversen) Rothm. Feddes Repert. Spec. Nov. Regni Veg. 54: 72 (1944) [wfo-0001403026] synonym Isoetes tenella var. braunii (Engelm.) Rothm. Feddes Repert. Spec. Nov. Regni Veg. 54: 73 (1944) [wfo-0001410821] synonym Isoetes tenella f. iversenii Rothm. Feddes Repert. Spec. Nov. Regni Veg. 54: 73 (1944) [wfo-0001403027] synonym Isoetes tenella subf. lativelata (Iversen) Rothm. [wfo-0001358245] synonym Isoetes tenella f. oligostoma Rothm. Feddes Repert. Spec. Nov. Regni Veg. 54: 73. 1944 [wfo-0001403028] synonym Isoetes tenella var. oligostoma (Iversen) Rothm. Feddes Repert. Spec. Nov. Regni Veg. 54: 72. 1944 [wfo-0001410822] synonym Isoetes tenella f. polystoma Rothm. Feddes Repert. Spec. Nov. Regni Veg. 54: 73 (1944) [wfo-0001403029] I. echtuckeri D.F.Brunt. & D.M.Britton Canad. J. Bot. 77(11): 1667 (1662-1668, f.1-15) (1999) [wfo-0001260092] I. ecuadoriensis Aspl. Bot. Not. 1925: 357, fig. (1925) [wfo-0001123145]synonym Isoetes keeleyorum H.P.Fuchs (1988), nom. nud. [wfo-1000068669] I. elatior A.Braun Linnaea 25(6): 722 (1853) [wfo-0001275071]synonym Calamaria elatior (A.Braun) Kuntze Revis. Gen. Pl. (1891) [wfo-0001328007] synonym Isoetes tasmanica F.Muell. Durieu, Bull. Soc. Bot. France 11: 104 (1864) [wfo-1000073828] I. eludens J.P.Roux, Hopper & Rhian J.Sm. Kew Bull. 64(1): 124 (123-128; f.1-2, map) (2009) [wfo-0001331558] I. engelmannii A.Braun Flora 29: 178 (1846) [wfo-0001108952]synonym Calamaria engelmannii (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001110681] synonym Isoetes engelmannii var. gracilis Engelm. Manual [Gray], ed. 5 677 (1867) [wfo-0001372518] synonym Isoetes fairbrothersii J.D.Montgom. & W.C.Taylor Amer. Fern J. 84: 120 (1994) [wfo-0001249681] synonym Isoetes lacustris var. microspora Engelm. A. Braun, Flora 29: 179 (1846) [wfo-1200103519] I. escondidensis S.Halloy Lilloa 35(2): 67 (1980) [wfo-0001328477]synonym Isoetes castillonii H.P.Fuchs (1965), nom. nud. [wfo-1000068653] synonym Isoetes filipovichii H.P.Fuchs (1965), nom. nud. [wfo-1000068663] I. fengii Y.F.Gu & Y.H.Yan Pl. Sci. J. 41(2): 168 (2023) [wfo-1000050567] I. fernaldii D.F.Brunt. & P.C.Sokoloff Webbia 75(1): 44 (2020) [wfo-1000023282] I. flaccida Shuttlew. ex A.Braun Flora 29(no. 12): 178 (1846) [wfo-0001108953]synonym Calamaria flaccida Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001110674] synonym Isoetes alata (N.Pfeiff.) Small Ferns Florida 222 (1932) [wfo-0001110677]homotypic Isoetes flaccida var. alata N.Pfeiff. Ann. Missouri Bot. Gard. 9: 137, t.16 (1922) [wfo-0001110676] synonym Isoetes flaccida var. alata N.Pfeiff. Ann. Missouri Bot. Gard. 9: 137, t.16 (1922) [wfo-0001110676]basionym Isoetes alata (N.Pfeiff.) Small Ferns Florida 222 (1932) [wfo-0001110677] synonym Isoetes flaccida f. rigida (Engelm.) Clute Fern Allies 258 (1905) [wfo-1200103456] synonym Isoetes flaccida var. rigida Engelm. Trans. Acad. Sci. St. Louis 4(2): 386 (1882) [wfo-1200106658] I. flaccida var. chapmanii Engelm. Trans. Acad. Sci. St. Louis 4(2): 386 (1882) [wfo-0001372519]synonym Isoetes chapmanii Small ex N.Pfeiff. Ferns Florida 222 (1932) [wfo-0001110675] synonym Isoetes flaccida f. chapmanii (Engelm.) Clute Fern-Allies 258 (1905) [wfo-1200106657] I. fluitans M.I.Romero Bot. J. Linn. Soc. 146(2): 233 (231-236; figs.) (2004) [wfo-0001331416] I. foveolata A.A.Eaton Ferns & Fern Allies New England 38 (1896) [wfo-0001108954] I. fuliginosa R.L.Small & Hickey Amer. Fern J. 91(2): 55 (-57; f.5-7,14-15) (2001) [wfo-0001276666] I. fuscomarginata H.P.Fuchs Fl. Ilustr. Catarin. 1(Isoet.): 12 (1986) [wfo-0001318389] I. georgiana Luebke Amer. Fern J. 82: 24, figs. (1992) [wfo-0001114581] I. giessii Launert Mitt. Bot. Staatssamml. München 2: 309 (1957) [wfo-0001110721] I. gigantea U.Weber Nova Hedwigia 63: 245, figs. (1922) [wfo-0001114606] I. gopalkrishnae S.K.Singh, P.K.Shukla & N.K.Dubey Phytotaxa 362(1): 71 (2018) [wfo-1000005074] I. graniticola D.F.Brunt. Rhodora 118(975): 269 (2016) [wfo-0001348103] I. gunnii A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1868: 535 (1868) [wfo-0001269508]synonym Calamaria gunnii (A.Braun) Kuntze Revis. Gen. Pl. (1891) [wfo-0001328008] synonym Isoetes lacustris (L.) Rodway Tasm. Fl. 279 (1903) [wfo-1000074170] I. gymnocarpa (Gennari) A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1863: 555 (1864) [wfo-0001421983]synonym Cephaloceraton gymnocarpum Gennari Comment. Soc. Crittog. Ital. 1(3): 113 (1862) [wfo-1000068079] synonym Cephaloceraton histrix var. subinerme Gennari Comment. Soc. Crittog. Ital. 1: 112 (1862) [wfo-1200102453] synonym Cephaloceraton pseudohystrix Gennari Ann. Agric. Siciliana 11: 175 (1865) [wfo-1000068080] synonym Isoetes histrix prol. sicula (Tod.) Rouy Fl. France [Rouy & Foucaud] 14: 482 (1913) [wfo-1200106661] synonym Isoetes histrix subsp. sicula (Tod.) P.E.Fourn. Quatre Fl. France: 6 (1934) [wfo-1200103461] synonym Isoetes histrix f. subinermis (Gennari) Hayek Repert. Spec. Nov. Regni Veg. Beih. 30(1): 12 (1924) [wfo-1200106659] synonym Isoetes histrix var. subinermis (Gennari) Durieu Ces., Comp. Fl. It. 25 (1867) [wfo-1200106669] synonym Isoetes histrix var. subinermis (Gennari) Motelay & Vendryès Actes Soc. Linn. Bordeaux 36: 400 (1883) [wfo-1200106670] synonym Isoetes hystrix var. subinermis Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103484] synonym Isoetes pseudohystrix (Gennari) Levier ex Barbey Fl. Sard. Comp.: 195 (1885) [wfo-1000068681] synonym Isoetes sicula Tod. Giorn. Sci. Nat. Econ. Palermo 1: 251 (1866) [wfo-1000045080] synonym Isoetes subinermis (Durieu) Cesca & Peruzzi Fl. Medit. 11: 308 (2001) [wfo-0001279931] I. habbemensis Alston J. Arnold Arbor. 26: 180 (1945) [wfo-0001118074] I. hallasanensis H.K.Choi, Ch.Kim & J.Jung J. Pl. Biol. 51(5): 357, f. 2 (2008) [wfo-0001331496] I. hallei Eb.Fisch. & Lobin Willdenowia 52(3): 330 (2022) [wfo-1000045037] I. harleyi J.B.S.Pereira Amer. Fern J. 112(3): 199 (2022) [wfo-1000047149] I. harveyi A.A.Eaton Fernwort Pap. 11 (1900) [wfo-0001233288]synonym Isoetes tuckermanii var. harveyi Clute Fern Allies 260 (1905) [wfo-0001410823] I. haussknechtii Troìa & Greuter Willdenowia 45(3): 395 (2015) [wfo-0001344752] I. hawaiiensis W.C.Taylor & W.H.Wagner Amer. Fern J. 83(2): 67 (1993) [wfo-0001328487] I. heldreichii Wettst. Verh. K.K. Zool.-Bot. Ges. Wien 36: 239, t.8 (1886) [wfo-0001123851] I. hemivelata R.L.Small & Hickey Amer. Fern J. 91(2): 57 (60; f.9-11,16-17) (2001) [wfo-0001417771] I. herb-wagneri W.C.Taylor Amer. Fern J. 92(2): 162 (161-163; f.1) (2002) [wfo-0001419651] I. heterospora A.A.Eaton Fernwort Pap. 8 (1900) [wfo-0001235930]homotypic Isoetes macrospora var. heterospora A.A.Eaton Rhodora 10: 42 (1908) [wfo-0001111246] synonym Isoetes macrospora f. heterospora (A.A.Eaton) Clute Fern Bull. 16: 56 (1908) [wfo-1200106680] synonym Isoetes macrospora var. heterospora A.A.Eaton Rhodora 10: 42 (1908) [wfo-0001111246]basionym Isoetes heterospora A.A.Eaton Fernwort Pap. 8 (1900) [wfo-0001235930] synonym Isoetes tuckermani var. heterospora (A.A.Eaton) Clute Fern Allies 226, 260 (1905) [wfo-1200103550] I. hewitsonii Hickey Fieldiana, Bot. 34(6): 94 (1994) [wfo-0001269125] I. hickeyi W.C.Taylor & Luebke Amer. Fern J. 78: 6 (1988) [wfo-0001114943] I. hieronymi U.Weber Hedwigia 63: 251, f.24,25 (1922) [wfo-0001123836]synonym Isoetes argentina A.A.Eaton Palmer, Amer. Fern J. 19: 18 (1929), nom. nud. [wfo-1000068645] synonym Isoetes lechleri N.Pfeiff. Ann. Missouri Bot. Gard. 9(2): 138 (1922) [wfo-1000074539] I. histrix Bory Compt. Rend. Hebd. Séances Acad. Sci. 18: 1167 (-1168) (1844) [wfo-0001123833]homotypic Cephaloceraton histrix (Bory & Durieu) Gennari Comment. Soc. Crittog. Ital. 1: 111 1862 [wfo-0001035144] synonym Calamaria histrix (Bory) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068038] synonym Cephaloceraton histrix (Bory) Gennari Comment. Soc. Crittog. Ital. 1: 111 (1862) [wfo-1000073805] synonym Isoetes chaeturetii Mendes Agron. Lusit. 23: 7 (1961) [wfo-0001328359] synonym Isoetes histrix subvar. armata Batt. & Trab. Fl. Algérie Tunisie 407 (1902) [wfo-1200103462] synonym Isoetes histrix f. desquamata A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1863: 617 (1864) [wfo-1200103457] synonym Isoetes histrix var. desquamata (A.Braun) Batt. & Trab. Fl. Algérie Tunisie: 407 (1905) [wfo-1200106666] synonym Isoetes histrix unranked grandis A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1863: 617 (1864) [wfo-1200106662] synonym Isoetes histrix var. grandis (A.Braun) Batt. & Trab. Fl. Algérie Tunisie 407 (1905) [wfo-1200103464] synonym Isoetes histrix subvar. inermis Batt. & Trab. Fl. Algérie Tunisie 407 (1902) [wfo-1200103463] synonym Isoetes histrix var. lacunosa Tod. Giorn. Sci. Nat. Econ. Palermo 1: 251 (1866) [wfo-1200103465] synonym Isoetes histrix f. longispina (A.Braun) Fiori Fl. Ital. Crypt. 5: 425 (1943) [wfo-1200103458] synonym Isoetes histrix unranked longispina A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1863: 618 (1864) [wfo-1200106663] synonym Isoetes histrix f. loricata A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1863: 617 (1864) [wfo-1200103459] synonym Isoetes histrix var. loricata (A.Braun) Batt. & Trab. Fl. Algérie Tunisie: 407 (1905) [wfo-1200106668] synonym Isoetes histrix unranked nana A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1863: 617 (1864) [wfo-1200106664] synonym Isoetes histrix var. scutellata A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1863: 617 (1864) [wfo-1200103467] synonym Isoetes histrix unranked solitaria A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1863: 618 (1864) [wfo-1200106665] synonym Isoetes histrix f. subinermis Durieu Bull. Soc. Bot. France 8: 164 (1861), nom. nud. [wfo-0001326863] synonym Isoetes histrix var. submersa Trab. Batt. & Trab., Fl. Algérie Tunisie 407 (1902) [wfo-1200103468] synonym Isoetes hystrix subsp. algarbiensis Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103470] synonym Isoetes hystrix subsp. arcuata Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103471] synonym Isoetes hystrix subsp. cesatii Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103472] synonym Isoetes hystrix subsp. collina Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103473] synonym Isoetes hystrix subsp. corsica Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103474] synonym Isoetes hystrix subsp. hispanica Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103475] synonym Isoetes hystrix subsp. horridula Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103476] synonym Isoetes hystrix subsp. Iongifolia Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103469] synonym Isoetes hystrix subsp. longiseta Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103477] synonym Isoetes hystrix subsp. numidica Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103478] synonym Isoetes hystrix subsp. oceanica Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103479] synonym Isoetes hystrix subsp. oranensis Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103480] synonym Isoetes hystrix subsp. phrygia Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103481] synonym Isoetes hystrix subsp. todaroi Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103482] synonym Isoetes hystrix subsp. transiens Gand. Fl. Eur. [Gand.] 27: 197 (1891) [wfo-1200103483] synonym Isoetes setacea Moris & De Not. Florula Capr. 161 (1839) [wfo-1000073914] I. howellii Engelm. Trans. Acad. Sci. St. Louis 4(2): 385 (1882) [wfo-0001108955]synonym Isoetes melanopoda var. californica A.A.Eaton List N. Amer. Pterid. 10, 27 (1901) [wfo-0001109698] synonym Isoetes melanopoda f. californica (A.A.Eaton) Clute Fern-Allies 260 (1905) [wfo-1200106681] synonym Isoetes nuda Engelm. Trans. Acad. Sci. St. Louis 4: 385 1882 [wfo-0001110244] synonym Isoetes underwoodii L.F.Hend. Bot. Gaz. 23: 124 (1897) [wfo-0001110245] I. humilior A.Braun Linnaea 25(6): 722 (1853) [wfo-0001268485]synonym Calamaria humilior (A.Braun) Kuntze Revis. Gen. Pl. (1891) [wfo-0001328009] synonym Isoetes hookeri A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1868: 538 (1868) [wfo-0001331325] synonym Isoetes tasmanica Durieu Bulletin de la Soci?t? Botanique de France 11 (1864) [wfo-0001331328] I. hyemalis D.F.Brunt. Castanea 59: 13, figs. (1994) [wfo-0001235928]synonym Isoetes canadensis var. amesii (A.A.Eaton) Clute Fern Bull. 16: 54 (1908) [wfo-1200103422] synonym Isoetes riparia var. amesii (A.A.Eaton ex Gilbert) Proctor Amer. Fern J. 39: 119. 1949 [wfo-0001410817] synonym Isoetes saccharata var. amesii A.A.Eaton Rhodora 5: 278 (1903) [wfo-0001410820] I. hypsophila Hand.-Mazz. Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 13: 95 (1923) [wfo-0001275410] I. inflata E.R.L.Johnson J. Roy. Soc. Western Australia 67(1): 37 (1984) [wfo-0001275943] I. jaegeri Pitot Bull. Inst. Fondam. Afrique Noire, Sér. A., Sci. Nat. 30: 58, f.1-19 (1968) [wfo-0001328360] I. jamaicensis Hickey Amer. Fern J. 71: 69, fig. (1981) [wfo-0001128627] I. japonica A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1861: 459 (1862) [wfo-0001233279]synonym Calamaria japonica (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068039] synonym Isoetes edulis Sieber ex Miq. Prodr. Fl. Jap. 390 (1866-67) [wfo-1000068661] I. jarmaniae D.F.Brunt., Kantvilas & M.Garrett Phytotaxa 522(1): 29 (2021) [wfo-1000027499] I. jeffreyi D.M.Britton & D.F.Brunt. Canad. J. Bot. 70: 451 (1992) [wfo-0001128900] I. jejuensis H.K.Choi, Ch.Kim & J.Jung J. Pl. Biol. 51(5): 356 (-357; f.1) (2008) [wfo-0001331495] I. jermyi D.F.Brunt. & Rumsey Bot. Lett. 168(4): 507 (2021) [wfo-1000027497] I. junciformis D.F.Brunt. & D.M.Britton Amer. Fern J. 89(3): 193 (187-197, f.1-5) (1999) [wfo-0001260091] I. kareniae D.F.Brunt. & P.C.Sokoloff Webbia 75(1): 38 (2020) [wfo-1000023283] I. karstenii A.Braun Verh. Bot. Vereins Prov. Brandenburg 3-4: 332 (1862) [wfo-0001261569]synonym Isoetes colombiana (T.C.Palmer) H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 85(2): 259 (1982) [wfo-0001280317]basionym Isoetes lechleri var. colombiana T.C.Palmer Amer. Fern J. 19: 18 (1929) [wfo-0001280316] synonym Isoetes lechleri var. colombiana T.C.Palmer Amer. Fern J. 19: 18 (1929) [wfo-0001280316]homotypic Isoetes colombiana (T.C.Palmer) H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 85(2): 259 (1982) [wfo-0001280317] synonym Isoetes steyermarkii H.P.Fuchs (1960), nom. nud. [wfo-1000068688] I. kashyapii M.Patel, M.N.Reddy & H.K.Goswami Indian Fern J. 39(1): 231 (2022) [wfo-1000041701] I. killipii C.V.Morton Amer. Fern J. 35: 49 (1945) [wfo-0001119133]synonym Isoetes roncadorensis H.P.Fuchs (1981), nom. nud. [wfo-1000068684] synonym Isoetes roraimensis H.P.Fuchs (1981), nom. nud. [wfo-1000068685] I. kirkii A.Br. Monatsber. Königl. Preuss. Akad. Wiss. Berlin 649 (1869) [wfo-0001268487]synonym Calamaria kirkii (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068040] I. labri-draconis N.R.Crouch Ferns S. Afr. Compreh. Guide 746 (2011) [wfo-0001043566] I. lacustris L. Sp. Pl. 2: 1100 (1753) [wfo-0001108956]synonym Calamaria lacustris (L.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001110943] synonym Calamaria setacea (Lam.) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001110947] synonym Isoetes atrovirens Th.Fr. Bot. Not. (1863): 48 (1865) [wfo-1000068649] synonym Isoetes hieroglyphica A.A.Eaton Fernwort Papers 10 1900 [wfo-0001110904] synonym Isoetes lacustris subsp. abbreviata Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103487] synonym Isoetes lacustris subsp. arvernensis Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103488] synonym Isoetes lacustris subsp. cambrica Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103490] synonym Isoetes lacustris var. curvifolia Casp. Glück, Pascher, Die Süsswasser-Flora Mitteleuropas 15: 10 (pro syn.) [wfo-1200106675] synonym Isoetes lacustris subsp. editorum Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103493] synonym Isoetes lacustris var. elatior Fliche Isoetes des Vosges: 7 (1879) [wfo-1200106676] synonym Isoetes lacustris subsp. errabunda Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103494] synonym Isoetes lacustris var. falcata Gay Bull. Soc. Bot. France 10: 386 (1863) [wfo-1200103511] synonym Isoetes lacustris var. falcatum Fliche Isoetes des Vosges: 7 (1879) [wfo-1200103512] synonym Isoetes lacustris var. fragilis Gray Nat. Arr. Brit. Pl. 2: 24 (1821 publ. 1822) [wfo-1200103513] synonym Isoetes lacustris var. gracilis Gray Nat. Arr. Brit. Pl. 2: 24 (1821 publ. 1822) [wfo-1200103514] synonym Isoetes lacustris subsp. hieroglyphica (A.A.Eaton) Taylor & Luebke [wfo-0001115156] synonym Isoetes lacustris var. humilior Motelay & Vendryès Actes Soc. Linn. Bordeaux 36: 327 (1883) [wfo-1200103515] synonym Isoetes lacustris var. humilis Mer Bull. Soc. Bot. France 28- 72 (1881) [wfo-1200103516] synonym Isoetes lacustris var. intermedia Mer Bull. Soc. Bot. France 28: 72 (1881) [wfo-1200103517] synonym Isoetes lacustris subsp. lacustris Hook.f. Student's Fl. Brit. Isl., ed. 1, 471 (1870) [wfo-1200106674] synonym Isoetes lacustris subsp. lamottei Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103495] synonym Isoetes lacustris subsp. langei Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103496] synonym Isoetes lacustris subsp. latifolia Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103497] synonym Isoetes lacustris var. leiospora Klinggr. Schriften Naturf. Ges. Danzig 6, 1: 20 (1884) [wfo-1200103518] synonym Isoetes lacustris var. minor Milde Höh. Sporenpfl. Deutschl. 141 (1865) [wfo-1200106677] synonym Isoetes lacustris var. moorei (D.Moore) Hook. J. D., Student's Fl. Brit. Isl., ed. 3, 526 (1884) [wfo-1200103521] synonym Isoetes lacustris var. moorei (D.Moore) Syme & N.E.Br. Engl. Bot., 3rd ed., vol. XII: 5 (1886) [wfo-1200106678] synonym Isoetes lacustris subsp. noltei Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103498] synonym Isoetes lacustris subsp. obscura Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103499] synonym Isoetes lacustris subsp. pervaga Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103500] synonym Isoetes lacustris var. rectifolia Casp. Süsswasserflora 15: 10 (1936) [wfo-1200103522] synonym Isoetes lacustris var. recurva Motelay & Vendryès Actes Soc. Linn. Bordeaux 36: 327 (1883) [wfo-1200103523] synonym Isoetes lacustris subsp. rivalis Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103501] synonym Isoetes lacustris subsp. rossica Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103502] synonym Isoetes lacustris subsp. scanica Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103503] synonym Isoetes lacustris subsp. scotica Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103504] synonym Isoetes lacustris subsp. septentrionalis Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103505] synonym Isoetes lacustris var. setacea Léman Dict. Sci. Nat., ed. 2 [F. Cuvier] 24: 24 (1822) [wfo-1200103525] synonym Isoetes lacustris subsp. spreta Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103506] synonym Isoetes lacustris var. stricta (Gay) Mer Bull. Soc. Bot. France 28: 72 (1881) [wfo-1200106679] synonym Isoetes lacustris var. stricta Motelay & Vendryès Actes Soc. Linn. Bordeaux 36: 327. 1883 [wfo-1200101571] synonym Isoetes lacustris var. strictum J.Gay Bull. Soc. Bot. France 10: 392 (1863) [wfo-1200103526] synonym Isoetes lacustris subsp. succedanea Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103507] synonym Isoetes lacustris subsp. suecica Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200103508] synonym Isoetes lacustris var. tenella Léman Dict. Sci. Nat., ed. 2. [F. Cuvier] 24: 24 (1822) [wfo-1200073456] synonym Isoetes lacustris var. tenuifolia A.Braun ex Milde Sporenpfl. 141 (1865) [wfo-1200103527] synonym Isoetes lacustris var. terrestris Motelay & Vendryès Actes Soc. Linn. Bordeaux 36: 327 (1883) [wfo-1200103528] synonym Isoetes lacustris unranked vergens Gand. Fl. Eur. [Gand.] 27: 193 (1891) [wfo-1200106027] synonym Isoetes leiospora Klinggr. Schriften Naturf. Ges. Danzig 6(1): 20 (1884) [wfo-1000068670] synonym Isoetes macrospora Durieu Bull. Soc. Bot. France 11: 101 (1864) [wfo-0001108960] synonym Isoetes macrospora f. hieroglyphica N.Pfeiff. Ann. Missouri Bot. Gard. 9: 194, pl.19 (1922) [wfo-0001111247] synonym Isoetes setacea Lam. Encycl. [J. Lamarck & al.] 3: 314 (1789) [wfo-0001110942] synonym Isoetes tenella (Léman) Desv. Mém. Soc. Linn. Paris 6: 179 (1827) [wfo-1000074885] synonym Isoetes tuckermani var. harveyi (A.A.Eaton) Clute Fern Allies 226, 227, 260 (1905) [wfo-1200103549] I. laosiensis C.Kim & H.K.Choi Amer. Fern J. 100(1): 48 (45-53; f.1-2) (2010) [wfo-0001329032] I. laurentiana D.F.Brunt. Botany (Ottawa) 97(11): 579 (2019) [wfo-1000032758] I. lechleri Mett. Fil. Lechl. 2: 36 1859 [wfo-0001117762]synonym Calamaria lechleri (Mett.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001417189] synonym Isoetes glacialis Aspl. Ark. Bot. 20A(7): 35, f.7 (1926) [wfo-0001123843] synonym Isoetes karstenii var. anomala (T.C.Palmer) R.L.Small & Hickey Amer. Fern J. 91(2): 65 (2001) [wfo-0001261571]basionym Isoetes lechleri var. anomala T.C.Palmer Amer. Fern J. 22: 130 (1933) [wfo-0001123146] synonym Isoetes laevis U.Weber Hedwigia 63: 252, f.30,31 (1922) [wfo-0001269091] synonym Isoetes lechleri var. anomala T.C.Palmer Amer. Fern J. 22: 130 (1933) [wfo-0001123146]homotypic Isoetes karstenii var. anomala (T.C.Palmer) R.L.Small & Hickey Amer. Fern J. 91(2): 65 (2001) [wfo-0001261571] synonym Isoetes peruviana U.Weber Hedwigia 63: 246, f.12,13 (1922) [wfo-0001269093] synonym Isoetes rimbachiana H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 85(2): 259 (1982) [wfo-0001417773] synonym Isoetes socia A.Braun Verh. Bot. Vereins Prov. Brandenburg 4: 332 1862 [wfo-0001269127] I. libanotica Musselman, Bolin & R.D.Bray Novon 21(3): 295 (-298; f.1) (2011) [wfo-0001329062] I. lithophila N.Pfeiff. Ann. Missouri Bot. Gard. 9: 135, pl.16 (1922) [wfo-0001108958] I. longifolia J.B.S.Pereira Syst. Bot. 47(2): 304 (2022) [wfo-1000040860] I. longissima Bory Compt. Rend. Hebd. Séances Acad. Sci. 18: 1165 (1844) [wfo-0001123862]homotypic Isoetes velata f. longissima (Bory & Durieu) N.Pfeiff. Ann. Missouri Bot. Gard. 9(2): 120 1922 [wfo-0001123864] synonym Isoetes velata subsp. longissima (Bory) Greuter & Burdet Med-Checkl. 1: 5 (1984) [wfo-0001361561] I. longissima subsp. asturicensis (M.Laínz) L.Sáez, Nava & Fern.Prieto Naturalia Cantabricae 8(Especial): 64 (2020) [wfo-1200028465]synonym Isoetes asturicensis (M.Laínz) M.Laínz Anuario Soc. Brot. 39: 118 (1973) [wfo-1000068648] synonym Isoetes boryana subsp. asturicensis M.Laínz Bol. Inst. Estud. Adsturianos, Supl. Ci. 15: 6 (1970) [wfo-1200028464] synonym Isoetes velata subsp. asturicense (M.Laínz) Rivas Mart. & Prada Lazaroa 2: 327 (1980) [wfo-0001359140] synonym Isoetes velata var. asturicensis (M.Laínz) E.Rico & Giráldez Anales Jard. Bot. Madrid 46(2): 585 (1990) [wfo-0001375241] I. longissima subsp. longissima Bory & Durieu Compt. Rend. Hebd. Séances Acad. Sci. 18: 1165 (1844) [wfo-1200103530]synonym Calamaria adspersa (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123860]basionym Isoetes adspersa A.Braun Expl. Sci. Algerie t. 37, f.3 (1849) [wfo-0001123857] synonym Calamaria longissima (Bory & Durieu) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068041] synonym Calamaria tenuissima (Boreau) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068045] synonym Isoetes adspersa A.Braun Expl. Sci. Algerie t. 37, f.3 (1849) [wfo-0001123857]homotypic Calamaria adspersa (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123860] synonym Isoetes adspersa var. perreymondii A.Braun Schoenefeld, Bull. Soc. Bot. France 12: 261 (1865) [wfo-1200103414] synonym Isoetes aspersum Asch. & Graebn. Syn. Mitteleur. Fl. [Ascherson & Graebner] 1: 169 Hauptreg. 23 (1897) [wfo-1000068647] synonym Isoetes baetica Willk. Willk. & Lange, Prodr. Fl. Hispan. 1: 14 (1861) [wfo-1000068650] synonym Isoetes boryana var. lereschii Rchb.f. ex Leresche & Levier Deux Excurs. Bot. 118 (1881) [wfo-0001382698] synonym Isoetes capillacea Bory Compt. Rend. Hebd. Séances Acad. Sci. 23: 620 (619-) (1846) [wfo-0001331554] synonym Isoetes chaboissaei Nym. Consp. Fl. Eur. Suppl. 1: 871 (1883) [wfo-1000074730] synonym Isoetes chaboissaei Hy J. Bot. (Morot) 8: 97 (1894) [wfo-1000068654] synonym Isoetes decipiens Bory Compt. Rend. Hebd. Séances Acad. Sci. 20: 619 (-620) (1846) [wfo-0001331553] synonym Isoetes dubia var. emersa Gennari Nuovo Giorn. Bot. Ital. 2: 96 (1870) [wfo-1200103425] synonym Isoetes dubia var. maculosa Gennari Comment. Soc. Crittog. Ital. 1(2): 105 (1861) [wfo-1200103426] synonym Isoetes grammontii Bory Milde, Fil. Eur. 280 (1867) [wfo-1000068665] synonym Isoetes iluliana Gennari Comment. Soc. Crittog. Ital. 1: 4 (1861) (febr.) (syn. subst.) [wfo-1000068668] synonym Isoetes lacustris Moris Stirp. Sard. EI. 3: 12 (1829) [wfo-1000074147] synonym Isoetes lineolata Durieu ex Motelay & Vendryès Actes Soc. Linn. Bord. 36: 381 (1883) [wfo-0001123858] synonym Isoetes longissima subsp. adspersa (A.Braun) Troìa & Greuter Willdenowia 44: 288 (2014) [wfo-0001362970] synonym Isoetes longissima subsp. intermedia (Trab.) Troìa & Greuter Willdenowia 44(2): 288 (2014) [wfo-0001362971] synonym Isoetes longissima subsp. tenuissima (Boreau) Troìa & Greuter Willdenowia 44: 288 (2014) [wfo-0001362973] synonym Isoetes perreymondii (Bory) Duval-Jouve Bull. Soc. Bot. France 16: 213 (1869) [wfo-1000068679] synonym Isoetes setacea Bory Compt. Rend. Acad. Sci. 18: 1165 (1844) [wfo-1000073807] synonym Isoetes setacea subsp. longissima (Bory) Greuter & Burdet Willdenowia 14(1): 37 (1984) [wfo-0001359164] synonym Isoetes setacea var. peyrremondii Bory Compt. Rend. Hebd. Séances Acad. Sci. 18: 1165 (1844) [wfo-0001383447] synonym Isoetes sicula Tod. ex Ces. & De Not. Comm. Soc. Critt. It. 1(2): 103 (1861) [wfo-1000074503] synonym Isoetes tenuissima Boreau Bull. Soc. Industr. Angers 21: 269 (1851) [wfo-0001340396] synonym Isoetes tenuissima var. capillifolia Le Grand Bull. Soc. Bot. France 42: 50 (1895) [wfo-1200103544] synonym Isoetes tenuissima var. chaboissaei Le Grand Bull. Soc. Bot. France 42: 50 (1895) [wfo-1200103545] synonym Isoetes tenuissima var. latifolia Le Grand Bull. Soc. Bot. France 42: 50 (1895) [wfo-1200103546] synonym Isoetes tenuissima var. longifolia Le Grand Bull. Soc. Bot. France 42: 50 (1895) [wfo-1200103547] synonym Isoetes tenuissima var. tenuissima Le Grand Bull. Soc. Bot. France 42: 50 (1895) [wfo-1200103548] synonym Isoetes variabilis Le Grand Mém. Soc. Imp. Sci. Nat. Cherbourg 1896: 11 (1896) (nom. illeg.) [wfo-1000068692] synonym Isoetes variabilis var. chaboissaei (Hy) P.E.Fourn. Quatre Fl. France: 5 (1934) [wfo-1200103554] synonym Isoetes variabilis var. tenuissima (Boreau) P.E.Fourn. Quatre Fl. France: 5 (1934) [wfo-1200106691] synonym Isoetes variabilis subsp. tenuissima (Boreau) R.C.V.Douin Bonnier, Fl. Ill. France 12: 118 (1934), nom. illeg. [wfo-1200103553] synonym Isoetes variabilis prol. tenuissima (Boreau) Rouy Fl. France [Rouy & Foucaud] 14: 477 (1913) [wfo-1200106689] synonym Isoetes variabilis prol. viollaei (Hy) Rouy Fl. France [Rouy & Foucaud] 14: 478 (1913) [wfo-1200106690] synonym Isoetes variabilis var. viollaei (Hy) P.E.Fourn. Quatre Fl. France: 5 (1934) [wfo-1200103555] synonym Isoetes velata A.Braun Expl. Sci. Algerie t. 37 f.1 (1849) [wfo-0001123861] synonym Isoetes velata subsp. adspersa (A.Braun) Batt. & Trab. Fl. Algérie Tunisie 407 (1905) [wfo-1200103557] synonym Isoetes velata subsp. algeriensis Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103558] synonym Isoetes velata subsp. australis Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103559] synonym Isoetes velata f. baetica (Willk.) C.Prada Acta Bot. Malac. 8: 88 (1983) [wfo-0001320653] synonym Isoetes velata subsp. barbara Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103560] synonym Isoetes velata var. brevifolia A.Braun Sitzungsber. Akad. Wiss. Wien 605 (1863) [wfo-1200106697] synonym Isoetes velata var. brevifolia (A.Braun) Franch. Bull. Soc. Bot. France 31: 349 (1884) [wfo-1200103571] synonym Isoetes velata subsp. calaostiensis Gennari Sp. Sard. 31 (1867) [wfo-1200103561] synonym Isoetes velata subsp. divergens Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103562] synonym Isoetes velata subsp. gallica Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103564] synonym Isoetes velata var. humilior A.Braun ex Mares & Vigin. Pl. Vasc. Iles Baleares 322 (1890) [wfo-1200103572] synonym Isoetes velata f. immaculata Maire Encycl. Biol. 33: 90 (1952) [wfo-1200103556] synonym Isoetes velata unranked intermedia Trab. Fl. Algérie Tunisie 407. 1905 [wfo-0001408850] synonym Isoetes velata subsp. intermedia (Trab.) Maire & Weiller Maire, Fl. Afrique. N. 1: 89 (1952) [wfo-1200106694] synonym Isoetes velata var. intermedia A.Braun Bory & Durieu, Expl. Sci. Alg. (1848) [wfo-1200106698] synonym Isoetes velata f. lereschii (Rchb.f. ex Leresche & Levier) Prada Lazaroa 3: 33 (1982) [wfo-0001320650] synonym Isoetes velata var. lereschii (Rchb.f. ex Leresche & Levier) Molina Abril & Sard.Rosc. Guineana 10: 346. 2004 [wfo-0001382699] synonym Isoetes velata var. longissima A.Braun Bory & Durieu, Expl. Sci. Alg., t. 37, fig. 2 (1848) [wfo-1200106699] synonym Isoetes velata subsp. longissima (Bory & Durieu) Greuter & Burdet Willdenowia 14(1): 37 (1984) [wfo-1200106695] synonym Isoetes velata f. longissima (Bory & Durieu) N.Pfeiff. Ann. Missouri Bot. Gard. 9(2): 120 1922 [wfo-0001123864]basionym Isoetes longissima Bory Compt. Rend. Hebd. Séances Acad. Sci. 18: 1165 (1844) [wfo-0001123862] synonym Isoetes velata var. perreymondii (Bory) Franch. Süsswasserflora 15: 17 (1936) [wfo-1200103573] synonym Isoetes velata subsp. redux Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103565] synonym Isoetes velata subsp. robusta Gand. Fl. Eur. [Gand.] 27: 194 (1891) [wfo-1200103566] synonym Isoetes velata var. sicula Tod. Syn. Pl. acot. vasc. Sic. 250 (1866) [wfo-1200106701] synonym Isoetes velata var. sicula Gennari Milde, Fil. Eur. 282 (1867) [wfo-1200103574] synonym Isoetes velata subsp. tenuicula Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103568] synonym Isoetes velata subsp. tenuissima (Boreau) O.Bolòs & Vigo Butll. Inst. Catalana Hist. Nat. 38: 64 (1974) [wfo-1200103569] synonym Isoetes velata subsp. trinacria Gand. Fl. Eur. [Gand.] 27: 195 (1891) [wfo-1200103570] synonym Isoetes vellata var. boryana (Durieu) M.I.Romero & Real Bot. J. Linn. Soc. 148(4): 464 (2005) [wfo-1200103575] synonym Isoetes viollaei Hy Bull. Herb. Boissier, sér. 1, App. 1: 23 (1894) [wfo-1000068693] I. longissima subsp. perralderiana (Durieu & Letourn. ex Milde) Troìa & Greuter Willdenowia 44(2): 288 (2014) [wfo-0001362972]synonym Calamaria perralderiana (Durieu & Letourn. ex Milde) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068043] synonym Isoetes perralderiana Durieu & Letourn. ex Milde Fil. Eur. 282 (1867) [wfo-0001123863]homotypic Isoetes velata var. perralderiana (Dur. & LeTourn.) N.Pfeiff. Ann. Missouri Bot. Gard. 9(2): 121 1922 [wfo-0001123865] synonym Isoetes perralderiana Durieu & Letourn. Kralik, Pl. Alg. Exsicc. 157 (1862) [wfo-1000073994] synonym Isoetes velata subsp. perralderiana (Durieu & Letourn.) Trab. Fl. Syn. 407 (1902) [wfo-1200106696] synonym Isoetes velata var. perralderiana (Dur. & LeTourn.) N.Pfeiff. Ann. Missouri Bot. Gard. 9(2): 121 1922 [wfo-0001123865]basionym Isoetes perralderiana Durieu & Letourn. ex Milde Fil. Eur. 282 (1867) [wfo-0001123863] I. longpingii Y.H.Yan, Y.F.Gu & J.P.Shu Guihaia 42(10): 1625 (2022) [wfo-1000047139] I. luetzelburgii U.Weber Estud. Bot. Nordéste 3: 256, 257, fig. (1923) [wfo-0001318369] I. malinverniana Ces. & De Not. Index Seminum [Genoa] 1858: 36 (-40) (1858) [wfo-0001107323]homotypic Calamaria malinverniana (Ces. & De Not.) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123855] synonym Calamaria malinverniana (Ces. & De Not.) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123855]basionym Isoetes malinverniana Ces. & De Not. Index Seminum [Genoa] 1858: 36 (-40) (1858) [wfo-0001107323] I. marensis D.M.Britton & D.F.Brunt. Canad. J. Bot. 73: 1352-1353 (1995) [wfo-0001417770] I. maritima Underw. Bot. Gaz. 13: 94 (1888) [wfo-0001110240]homotypic Isoetes braunii var. maritima N.Pfeiff. Ann. Missouri Bot. Gard. 9: 174 (1922) [wfo-0001110967] homotypic Isoetes echinospora var. maritima (Underw.) A.A.Eaton Fern Bull. 13: 52 (1905) [wfo-0001110966] homotypic Isoetes echinospora subsp. maritima (Underw.) Á.Löve Amer. Fern J. 52: 121 (1962) [wfo-0001110968] homotypic Isoetes muricata subsp. maritima (Underw.) Hultén Ark. Bot. n.s., 7(1): 8 (1968) [wfo-0001111139] synonym Isoetes beringensis Kom. Bull. Jard. Bot. Acad. Sci. USSR 30 (1-2): 196 (1932) [wfo-0001111140] synonym Isoetes braunii var. maritima N.Pfeiff. Ann. Missouri Bot. Gard. 9: 174 (1922) [wfo-0001110967]basionym Isoetes maritima Underw. Bot. Gaz. 13: 94 (1888) [wfo-0001110240] homotypic Isoetes echinospora var. maritima (Underw.) A.A.Eaton Fern Bull. 13: 52 (1905) [wfo-0001110966] homotypic Isoetes echinospora subsp. maritima (Underw.) Á.Löve Amer. Fern J. 52: 121 (1962) [wfo-0001110968] homotypic Isoetes muricata subsp. maritima (Underw.) Hultén Ark. Bot. n.s., 7(1): 8 (1968) [wfo-0001111139] synonym Isoetes echinospora var. maritima (Underw.) A.A.Eaton Fern Bull. 13: 52 (1905) [wfo-0001110966]basionym Isoetes maritima Underw. Bot. Gaz. 13: 94 (1888) [wfo-0001110240] homotypic Isoetes braunii var. maritima N.Pfeiff. Ann. Missouri Bot. Gard. 9: 174 (1922) [wfo-0001110967] homotypic Isoetes echinospora subsp. maritima (Underw.) Á.Löve Amer. Fern J. 52: 121 (1962) [wfo-0001110968] homotypic Isoetes muricata subsp. maritima (Underw.) Hultén Ark. Bot. n.s., 7(1): 8 (1968) [wfo-0001111139] synonym Isoetes echinospora subsp. maritima (Underw.) Á.Löve Amer. Fern J. 52: 121 (1962) [wfo-0001110968]basionym Isoetes maritima Underw. Bot. Gaz. 13: 94 (1888) [wfo-0001110240] homotypic Isoetes braunii var. maritima N.Pfeiff. Ann. Missouri Bot. Gard. 9: 174 (1922) [wfo-0001110967] homotypic Isoetes echinospora var. maritima (Underw.) A.A.Eaton Fern Bull. 13: 52 (1905) [wfo-0001110966] homotypic Isoetes muricata subsp. maritima (Underw.) Hultén Ark. Bot. n.s., 7(1): 8 (1968) [wfo-0001111139] synonym Isoetes echinospora f. maritima (Underw.) Clute [wfo-0001320218] synonym Isoetes echinospora var. savilei B.Boivin Amer. Fern J. 51: 85 (1961) [wfo-0001379429] synonym Isoetes macounii A.A.Eaton Fern Bull. 8: 12 (1900) [wfo-0001110241] synonym Isoetes muricata subsp. maritima (Underw.) Hultén Ark. Bot. n.s., 7(1): 8 (1968) [wfo-0001111139]basionym Isoetes maritima Underw. Bot. Gaz. 13: 94 (1888) [wfo-0001110240] homotypic Isoetes braunii var. maritima N.Pfeiff. Ann. Missouri Bot. Gard. 9: 174 (1922) [wfo-0001110967] homotypic Isoetes echinospora var. maritima (Underw.) A.A.Eaton Fern Bull. 13: 52 (1905) [wfo-0001110966] homotypic Isoetes echinospora subsp. maritima (Underw.) Á.Löve Amer. Fern J. 52: 121 (1962) [wfo-0001110968] synonym Isoetes setacea subsp. maritima (Underw.) Holub Acta Horti bot. prag.: 55 (1964) [wfo-0001118062] I. mattaponica Musselman & W.C.Taylor Novon 11(2): 200 (-204; f.1-6) (2001) [wfo-0001259847] I. maxima Hickey, Macluf & Link-Pérez Amer. Fern J. 99(3): 194 (-199; figs.) (2010) [wfo-0001319190] I. melanopoda J.Gay & Durieu Bull. Soc. Bot. France 11: 102 (1864) [wfo-0001108961]I. melanopoda subsp. melanopoda Unknown [wfo-0001425718]synonym Calamaria melanopoda (J.Gay) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000067184] synonym Isoetes melanopoda var. pallida Engelm. Trans. Acad. Sci. St. Louis 4: 387 (1882) [wfo-0001111240]homotypic Isoetes melanopoda f. pallida (Engelm.) Fernald Rhodora 51: 103 (1949) [wfo-0001111242] synonym Isoetes melanopoda f. pallida (Engelm.) Fernald Rhodora 51: 103 (1949) [wfo-0001111242]basionym Isoetes melanopoda var. pallida Engelm. Trans. Acad. Sci. St. Louis 4: 387 (1882) [wfo-0001111240] I. melanopoda subsp. silvatica D.F.Brunt. & D.M.Britton Castanea 71(1): 26 (15-30; f.1-10) (2006) [wfo-0001360145] I. melanospora Engelm. Trans. Acad. Sci. St. Louis 3: 395 (1877) [wfo-0001108962]synonym Calamaria melanospora (Engelm.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001110678] I. melanotheca Alston Bol. Soc. Brot. sér. 2A, 30: 16 (1956) [wfo-0001329001] I. michinokuana M.Takamiya, Mits.Watan. & K.Ono Acta Phytotax. Geobot. 48(2): 109 (1998) [wfo-0001249875] I. microvela D.F.Brunt. Rhodora 100: 270, fig. (1998) [wfo-0001244484] I. minima A.A.Eaton Fern Bull. 6: 30 (1898) [wfo-0001110246]synonym Isoetes howellii var. minima N.Pfeiff. Ann. Missouri Bot. Gard. 9: 142 (1922) [wfo-0001410814] I. mississippiensis S.W.Leonard, W.C.Taylor, Musselman & R.D.Bray PhytoKeys 74: 99 (2016) [wfo-0001347011] I. mongerensis E.R.L.Johnson J. Roy. Soc. Western Australia 67(1): 39 (1984) [wfo-0001328379] I. mourabaptistae J.B.S.Pereira, P.G.Windisch, Lorscheitt. & Labiak Amer. Fern J. 102(2): 175, f.1 A–B;2A–D;3A–D (2012) [wfo-0001318370] I. muelleri A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1868: 541 (1868) [wfo-0001268486]synonym Calamaria muelleri (A.Braun) Kuntze Revis. Gen. Pl. (1891) [wfo-0001328010] synonym Isoetes stuartii A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1868: 539 (1868) [wfo-0001331327] synonym Isoetes tenuissima F.Muell. (1868), nom. nud. [wfo-1200107111] I. naipiana P.G.Windisch, Lorscheitt. & Nervo Willdenowia 44(3): 394 (2014) [wfo-0001318371] I. neoguineensis Baker Bull. Misc. Inform. Kew 122 1899 [wfo-0001118076]synonym Isoetes neoguineensis Baker ex F.Muell. Ann. Rep. Brit. N. Guinea 1897-8: 149, nomen (1898) [wfo-1200105083] synonym Isoetes neoguineensis var. rheophila J.R.Croft Blumea 26(1): 188 (1980) [wfo-0001375311] I. nigritiana A.Br. Filic. Afr. [Kuhn] 196 (1868) [wfo-0001123856]homotypic Calamaria nigritiana (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123859] synonym Calamaria nigritiana (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123859]basionym Isoetes nigritiana A.Br. Filic. Afr. [Kuhn] 196 (1868) [wfo-0001123856] synonym Isoetes garnieri Chev. & Monnier Bull. Mus. Natl. Hist. Nat. 18(1): 91-979 1 fig. (1946) [wfo-1000068664] I. nigroreticulata Verdc. Fl. Trop. E. Africa, Isoet. 2 (2005) [wfo-0001276541] I. novae-angliae D.F.Brunt. & D.M.Britton Rhodora 108(935): 238 (228-241; f.1-3) (2006) [wfo-0001331430]synonym Isoetes canadensis var. robbinsii A.A.Eaton Rhodora 5: 279 (1903) [wfo-0001410809] synonym Isoetes chapmanii var. robbinsii (A.A.Eaton) M.Broun Index No. Amer. Ferns: 199 (1938) [wfo-1200103423] synonym Isoetes dodgei var. robbinsii A.A.Eaton Rhodora 10: 42 (1908) [wfo-0001410810] synonym Isoetes riparia var. robbinsii (A.A.Eaton) Proctor Amer. Fern J. 39: 119 (1949) [wfo-0001410819] I. novogranadensis H.P.Fuchs Caldasia 8: 314, fig (1960) [wfo-0001123845]synonym Isoetes dichotoma L.E.Mora & W.Hagemann Mutisia 43: 5, figs. (1977) [wfo-0001230808] synonym Isoetes hagemannii H.P.Fuchs (1981), nom. nud. [wfo-1000068666] synonym Isoetes narinensis H.P.Fuchs (1981), nom. nud. [wfo-1000068676] synonym Isoetes pichichensis H.P.Fuchs (1981), nom. nud. [wfo-1000068680] synonym Isoetes quilindanensis H.P.Fuchs (1981), nom. nud. [wfo-1000068682] I. nuttallii A.Braun ex Engelm. Amer. Naturalist 8(4): 215 (1874) [wfo-0001108963]synonym Calamaria nuttallii (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001110945] synonym Calamaria suksdorfii (Baker) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001110946] synonym Isoetes opaca Nutt. ex Engelm. Trans. Acad. Sci. St. Louis 4(2): 389 (1886) [wfo-0001114613] synonym Isoetes suksdorfii Baker Handb. Fern-Allies 132 1887 [wfo-0001110247] I. occidentalis L.F.Hend. Bull. Torrey Bot. Club 27: 358 (1900) [wfo-0001109699]synonym Isoetes echinospora var. flettii A.A.Eaton Fern Bull. 13(2): 51. 1905 [wfo-0001110971]homotypic Isoetes flettii (A.A.Eaton) N.Pfeiff. Ann. Missouri Bot. Gard. 9(2): 186 (1922) [wfo-0001110243] synonym Isoetes echinospora f. flettii (A.A.Eaton) Clute Fern Bull. 16: 55 (1908) [wfo-0001321546] synonym Isoetes echinospora subsp. flettii (A.A.Eaton) Piper & Beattie Fl. N.W. Coast : 16 (1915) [wfo-0001360059] synonym Isoetes flettii (A.A.Eaton) N.Pfeiff. Ann. Missouri Bot. Gard. 9(2): 186 (1922) [wfo-0001110243]basionym Isoetes echinospora var. flettii A.A.Eaton Fern Bull. 13(2): 51. 1905 [wfo-0001110971] synonym Isoetes howellii var. piperi Clute Fern Allies 258 (1905) [wfo-0001372521] synonym Isoetes howellii f. piperi (A.A.Eaton) Clute Fern Bull. 16: 56 (1908) [wfo-1200106671] synonym Isoetes lacustris var. paupercula Engelm. Trans. Acad. Sci. St. Louis 4: 377 (1882) [wfo-0001108957]homotypic Isoetes paupercula A.A.Eaton Proc. U. S. Natl. Mus. 23: 649 (1901) [wfo-0001110248] synonym Isoetes lacustris subsp. paupercula (Engelm.) Feilberg Nordic J. Bot. 4: 155. 1984 [wfo-0001405413] synonym Isoetes macrospora f. paupercula (Engelm.) Clute Fern Bull. 16: 56 (1908) [wfo-1200103531] synonym Isoetes maritima var. flettii (A.A.Eaton) C.F.Reed Amer. Fern J. 35: 85 (1945) [wfo-0001372522] synonym Isoetes occidentalis subsp. paupercula (Engelm.) Feilberg Nordic J. Bot. 4(2): 155 (1984) [wfo-1200103532] synonym Isoetes occidentalis var. piperi A.Nelson & J.F.Macbr. Bot. Gaz. 61: 30 (1916) [wfo-0001372523] synonym Isoetes paupercula A.A.Eaton Proc. U. S. Natl. Mus. 23: 649 (1901) [wfo-0001110248]basionym Isoetes lacustris var. paupercula Engelm. Trans. Acad. Sci. St. Louis 4: 377 (1882) [wfo-0001108957] I. olympica A.Br. Fil. Eur. 285 (1867) [wfo-0001276413]synonym Calamaria olympica (A.Br.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068042] I. orcuttii A.A.Eaton Fern Bull. 8: 13 (1900) [wfo-0001108964]homotypic Isoetes nuttallii var. orcuttii Clute Fern Allies 253 (1905) [wfo-0001111114] synonym Isoetes nuttallii var. orcuttii Clute Fern Allies 253 (1905) [wfo-0001111114]basionym Isoetes orcuttii A.A.Eaton Fern Bull. 8: 13 (1900) [wfo-0001108964] I. organensis U.Weber Estud. Bot. Nordéste 3: 256, fig. (1923) [wfo-0001318373] I. orientalis Hong Liu & Q.F.Wang Novon 15(1): 164 (-167; f.1-2) (2005) [wfo-0001275732] I. ovata N.Pfeiff. Ann. Missouri Bot. Gard. 9: 108, pl.12 (1922) [wfo-0001123850]synonym Isoetes clavata U.Weber Ber. Deutsch. Bot. Ges. 52: 121, t.3 (1934) [wfo-0001328117] I. palmeri H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 84(2): 168 (-173; f.24-25) (1981) [wfo-0001230723]synonym Isoetes cleefii H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 84(2): 177 (-181) (1981) [wfo-0001280314] I. panamensis Maxon & C.V.Morton Ann. Missouri Bot. Gard. 26: 272 (1939) [wfo-0001114187]synonym Isoetes pacifica Svenson Amer. Fern J. 34: 123, t.10 (1944) [wfo-0001114188] synonym Isoetes savannarum L.D.Gómez Phytologia 49: 339 (1981) [wfo-0001115139] I. paratunica D.F.Brunt., Mochalova & A.A.Bobrov Amer. Fern J. 105(2): 109, f.5-7 (2015) [wfo-0001330165] I. pedersenii H.P.Fuchs ex E.I.Meza & Macluf Anais Acad. Brasil. Ci. 82(2): 354 (-356; f.1) (2010) [wfo-0001240659] I. perrieriana Iversen Dansk Bot. Ark. 7: 200-201 (1932) [wfo-0001110720] I. philippinensis Merr. & L.M.Perry Amer. Fern J. 30: 19, fig. (1940) [wfo-0001254707] I. phrygia (Boiss.) Hausskn. Mitth. Thüring. Bot. Vereins 13: 72 (1899) [wfo-1000067360]basionym Isoetes histrix var. phrygia Boiss. Fl. Orient. [Boissier] 5: 748 (1884) [wfo-1200103466] synonym Isoetes histrix var. phrygia Boiss. Fl. Orient. [Boissier] 5: 748 (1884) [wfo-1200103466]homotypic Isoetes phrygia (Boiss.) Hausskn. Mitth. Thüring. Bot. Vereins 13: 72 (1899) [wfo-1000067360] I. pichisermollii Eb.Fisch. & Lobin Willdenowia 52(3): 330 (2022) [wfo-1000045038] I. pirinica D.F.Brunt. & D.Ivanova Fern Gaz. 21(6): 247 (2021) [wfo-1000027500] I. pitotii Alston Bol. Soc. Brot. sér. 2A, 30: 16 (-17) (1956) [wfo-0001329002] I. precocia R.L.Small & Hickey Amer. Fern J. 91(2): 61 (-62; f.12-13,18-19) (2001) [wfo-0001273665] I. prototypus D.M.Britton & Goltz Canad. J. Bot. 69: 278, f.1 (1991) [wfo-0001114614] I. pseudojaponica M.Takamiya, Mits.Watan. & K.Ono Acta Phytotax. Geobot. 48(2): 107 (1998) [wfo-0001249876] I. pseudotruncata Britton & D.F.Brunt. Canad. J. Bot. 74: 58 (1996) [wfo-0001248648] I. pusilla C.R.Marsden & Chinnock Muelleria 8(1): 57 (1993) [wfo-0001417772] I. quiririensis J.B.S.Pereira & Labiak Syst. Bot. 38(4): 869 (2014) [wfo-0001318374] I. riparia Engelm. ex A.Braun Flora 29: 178 (1846) [wfo-0001108966]synonym Calamaria riparia (Engelm.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001417192] synonym Isoetes amesii A.A.Eaton ex Gilbert Fern Bull. 11: 103 (1903) [wfo-0001357655] synonym Isoetes foveolata var. plenospora A.A.Eaton Rhodora 5: 280 (1903) [wfo-0001372520] synonym Isoetes riparia var. palmeri (A.A.Eaton ex Steele) Proctor Amer. Fern J. 39: 119 (1949) [wfo-0001372524] synonym Isoetes riparia var. reticulata (A.A.Eaton ex Steele) Proctor Amer. Fern J. 39: 119 (1949) [wfo-0001372525] synonym Isoetes riparia var. riparia Amer. Fern J. 39: 119 (1949) [wfo-0001111290] synonym Isoetes riparia f. saccharata (Engelm.) Clute Fern Bull. 16: 57 (1908) [wfo-1200106682] synonym Isoetes riparia f. saccharata (Engelm.) Proctor Amer. Fern J. 39: 119 (1949) [wfo-1200106683] synonym Isoetes saccharata var. palmeri A.A.Eaton Proc. Biol. Soc. Wash. 14(10): 49 (1901) [wfo-0001370863] synonym Isoetes saccharata f. palmeri (A.A.Eaton) A.A.Eaton Fern Bull. 11 : 25 (1903) [wfo-1200106685] synonym Isoetes saccharata f. reticulata Fern Bull. 11: 25 (1903) [wfo-1200101332] synonym Isoetes saccharata var. reticulata A.A.Eaton Proc. Biol. Soc. Wash. 14(10): 49 (1901) [wfo-0001371084] I. robusta (Engelm.) D.F.Brunt. Rhodora 120(984): 307 (2019) [wfo-1000032755]synonym Isoetes braunii f. robusta (Engelm.) N.Pfeiff. Ann. Missouri Bot. Gard. 9: 173 (1922) [wfo-0001403016] synonym Isoetes echinospora f. robusta (Engelm.) Clute Fern Allies 258. 1905 [wfo-0001403021] synonym Isoetes echinospora var. robusta Engelm. Trans. Acad. Sci. St. Louis 4: 380 (reprint p.23) (1882) [wfo-0001111292] synonym Isoetes muricata f. robusta (Engelm.) C.F.Reed Amer. Fern J. 35: 82 (1945) [wfo-0001403023] synonym Isoetes tenella f. robusta (Engelm.) Rothm. Feddes Repert. Spec. Nov. Regni Veg. 54: 73 (1944) [wfo-0001403030] I. rwandensis Eb.Fisch. & Lobin Willdenowia 52(3): 332 (2022) [wfo-1000045039] I. sabatina Troìa & Azzella Pl. Biosystems 147: 1052 (2013) [wfo-0001338128] I. sahyadrii Mahab. ex L.N.Rao Curr. Sci. 7(2): 62, f.1 (1938) [wfo-0001354287]synonym Isoetes panchananii D.D.Pant & G.K.Srivast. Proc. Natl. Inst. Sci. India, B 28: 243, t.13,14, f.1,2 (1962) [wfo-0001115276] synonym Isoetes panchananii var. panchmarhiensis G.K.Srivast., Mritt.Srivast. & P.K.Shukla Indian Fern J. 14(1-2): 44 (1998) [wfo-0001375435] synonym Isoetes panchganiensis G.K.Srivast., D.D.Pant & P.K.Shukla Amer. Fern J. 83: 105 (1993) [wfo-0001328488] synonym Isoetes panchganiensis var. kemangundiensis G.K.Srivast., D.D.Pant & P.K.Shukla Amer. Fern J. 83: 105 (1993) [wfo-0001375363] synonym Isoetes rajasthanensis Gena & Bhardwaja J. Bombay Nat. Hist. Soc. 81(1): 165 (1984) [wfo-0001221695] synonym Isoetes reticulata Gena & Bhardwaja J. Bombay Nat. Hist. Soc. 81(1): 166 (1984) [wfo-0001221696] synonym Isoetes sampathkumaranii L.N.Rao Curr. Sci. 13(11): 286, figs. 1-3 (1944) [wfo-0001268482] I. salishensis D.F.Brunt. Amer. Fern J. 114(2): 122 (2024) [wfo-1000066247] I. santacruzensis J.B.S.Pereira PhytoKeys 131: 61 (2019) [wfo-1000032760] I. saracochensis Hickey Fieldiana, Bot. 34(6): 94-95 (1994) [wfo-0001269126]synonym Isoetes saracochensis H.P.Fuchs (1960), nom. nud. [wfo-1200107140] I. savatieri Franch. Bull. Soc. Bot. France 31: 395 (1884) [wfo-0001111500]synonym Calamaria savatieri (Franch.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001417194] synonym Isoetes chilensis H.P.Fuchs (1981), nom. nud. [wfo-1000068656] synonym Isoetes lechleri var. savatieri (Franch.) L.D.Gómez Brenesia 18: 5 (1981) [wfo-0001410815] I. schweinfurthii A.Br. J. Bot. 18: 108 (1880) [wfo-0001110722]homotypic Calamaria schweinfurthii (Baker) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123849] synonym Calamaria schweinfurthii (Baker) Kuntze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123849]basionym Isoetes schweinfurthii A.Br. J. Bot. 18: 108 (1880) [wfo-0001110722] synonym Calamaria schweinfurthii (A.Braun) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000074118] synonym Isoetes kersii Wannt. Svensk Bot. Tidskr. 64: 146, f.3,4, t.1,3 (1970) [wfo-0001110724] synonym Isoetes rhodesiana Alston Bol. Soc. Brot., ser. 2, 30: 17 (1956) [wfo-0001110725] I. sehnemii H.P.Fuchs Fl. Ilustr. Catarin. fasc. ISOE 38, fig. (1986) [wfo-0001318375] I. septentrionalis D.F.Brunt. Canad. Field-Naturalist 129(2): 176, f.1-5 (2015) [wfo-0001330877] I. serracarajensis J.B.S.Pereira, Salino & Stützel Phytotaxa 272(2): 142 (2016) [wfo-0001318376] I. shangrilaensis Xiang Li, Yuqian Huang, X.Dai & Xing Liu Phytotaxa 397(1): 71 (2019) [wfo-1000032761] I. smithii H.P.Fuchs Fl. Ilustr. Catarin. fasc. ISOE 17, fig. (1986) [wfo-0001239554] I. spannagelii H.P.Fuchs Fl. Ilustr. Catarin. fasc. ISOE 33, fig. (1986) [wfo-0001318377] I. spinulospora C.Jermy & Schelpe Contr. Bolus Herb. 10: 151 (1982) [wfo-0001328376] I. stellenbossiensis A.V.Duthie Trans. Roy. Soc. South Africa 17: 328 (1929) [wfo-0001110726] I. stephanseniae A.V.Duthie Trans. Roy. Soc. South Africa 17: 330 (1929) [wfo-1000067362]synonym Isoetes capensis var. stephanseniae (A.V.Duthie) Schelpe & N.C.Anthony Bothalia 15(3-4): 555 (1985) [wfo-0001110718] I. storkii T.C.Palmer Amer. Fern J. 22: 136 (1933) [wfo-0001116265]synonym Isoetes montana T.C.Palmer Amer. Fern J. 21(4): 134 (1931) [wfo-1000074537] synonym Isoetes tryoniana L.D.Gómez Revista Biol. Trop. 17: 108, f.8 (1970) [wfo-0001121344] I. taiwanensis De Vol Taiwania 17: 2 (1972) [wfo-0001107324]I. taiwanensis var. kinmenensis F.Y.Lu, H.H.Chen & Y.L.Hsueh Fl. Kinmen 1: 26 (2011) [wfo-1200101573] I. tamaulipana Mora-Olivo, A.Mend. & Mart.-Aval. Phytotaxa 267(2): 115 (2016) [wfo-0001346120] I. tegetiformans Rury Amer. Fern J. 68: 100 (-101), fig. (1978) [wfo-0001108967] I. tenella Léman ex Desv. [wfo-0001118063]synonym Isoetes muricata var. hesparia C.F.Reed Amer. Fern J. 35: 84. (1945) [wfo-0001379428] synonym Isoetes tenella f. lativelata (Iversen) Rothm. Feddes Repert. Spec. Nov. Regni Veg. 54: 72 (1944) [wfo-0001321506] I. tennesseensis Luebke & Budke Amer. Fern J. 93(4): 187 (184-190; f.1-2) (2003) [wfo-0001273344] I. tenuifolia Jermy Bot. J. Linn. Soc. 64: 118 (1971) [wfo-0001328361] I. texana Singhurst, Rushing & W.C.Holmes Phytoneuron 2011-22: 1 (-6; figs.) (2011) [wfo-0001040583] I. tiguliana Gennari Comment. Soc. Crittog. Ital. 1(1): 42 (1861) [wfo-1000036269]synonym Calamaria dubia (Gennari) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068036] synonym Calamaria tegulensis (Genn.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-1000068044] synonym Isoetes dubia Gennari Comment. Soc. Crittog. Ital. 1: 104 (1861) [wfo-1000068659] synonym Isoetes tegulensis Gennari Comment. Soc. Crittog. Ital. 1: 106 (1861) (sept.) (nom. illeg.) [wfo-1000068689] synonym Isoetes tegulensis f. submersa Glück Süsswasserflora 15: 20 (1936) [wfo-1200103542] synonym Isoetes tegulensis f. terrestris Glück Süsswasserflora 15: 20 (1936) [wfo-1200103543] synonym Isoetes velata subsp. dubia (Gennari) Batt. & Trab. Fl. Algérie Tunisie 407 (1905) [wfo-1200103563] synonym Isoetes velata subsp. tegulensis (Gennari) Batt. & Trab. Fl. Algérie Tunisie 407 (1905) [wfo-1200103567] synonym Isoetes velata var. tegulensis (Gennari) Fiori & Paol. Fl. Anal. Ital. 1: 25 (1896) [wfo-1200106702] synonym Isoetes velata var. tegulensis Fiori Fiori & Paol., Fl. Anal. Ital. 1: 25 (1896) [wfo-1200106705] I. todaroana Troìa & Raimondo Amer. Fern J. 99(4): 238 (-243; figs.) (2010) [wfo-0001331662]synonym Isoetes iapygia Ernandes, Beccarisi & V.Zuccarello Pl. Biosystems 144(4): 807 (805-813; figs., map) (2010) [wfo-0001331784] I. toximontana Musselman & J.P.Roux Novon 12(4): 504 (2002) [wfo-0001267170] I. transvaalensis C.Jermy & Schelpe Contr. Bolus Herb. 10: 150 (1982) [wfo-0001110727] I. triangula U.Weber Hedwigia 63: 253, f.32,33 (1922) [wfo-0001119134] I. tripus A.Braun Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1868: 559 (1868) [wfo-0001331329]synonym Calamaria tripus (A.Braun) Kuntze Revis. Gen. Pl. (1891) [wfo-0001328011] synonym Isoetes phaeospora Durieu Bulletin de la Soci?t? Botanique de France 11 (1864) [wfo-1000067359] I. truncata (A.A.Eaton) Clute Fern Allies 223, 260 (1905) [wfo-0001110970]basionym Isoetes echinospora var. truncata A.A.Eaton Working List N. Amer. Pterid. 10, 27 (1901) [wfo-0001110969] synonym Isoetes echinospora var. truncata A.A.Eaton Working List N. Amer. Pterid. 10, 27 (1901) [wfo-0001110969]homotypic Isoetes truncata (A.A.Eaton) Clute Fern Allies 223, 260 (1905) [wfo-0001110970] synonym Isoetes muricata subsp. truncata (A.A.Eaton) H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 85(2): 239 (1982) [wfo-0001359184] I. tuckermanii A.Braun ex Engelm. Manual [Gray], ed. 5 676 (1867) [wfo-0001108968]I. tuckermanii subsp. acadiensis (Kott) D.F.Brunt. Canad. Field-Naturalist 132(4): 366. 2018 [wfo-1200002606]synonym Isoetes acadiensis Kott Canad. J. Bot. 59: 2592, figs. (1981) [wfo-0001110936] I. tuckermanii subsp. tuckermanii A.Braun ex Engelm. Manual (Gray), ed. 5: 676 (1867) [wfo-1200103551]synonym Calamaria tuckermanii (A.Braun ex Engelm.) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001417195] synonym Isoetes tuckermanii var. borealis A.A.Eaton Fernwort Pap. 10 (1900) [wfo-0001372527] I. tuerckheimii Brause Symb. Antill. (Urban). 7(2): 161 (1912) [wfo-0001121343] I. udupiensis P.K.Shukla, G.K.Srivast., S.K.Shukla & P.K.Rajagopal Taxon 54(1): 112 (-113; f.2,4-5) (2005) [wfo-0001275941]synonym Isoetes divyadarshanii P.K.Shukla, G.K.Srivast. & S.K.Shukla Taxon 54(1): 113 (-115; f.3-5) (2005) [wfo-0001275942] I. ulei U.Weber Hedwigia 63: 255, f.40,41 (1922) [wfo-0001318378]synonym Isoetes goebelii U.Weber Hedwigia 63: 247, f.16,17 (1922) [wfo-0001128741] I. valida Clute Fern Allies 236, 260 (1905) [wfo-0001110683]basionym Isoetes engelmannii var. valida Engelm. Manual [Gray], ed. 5 677 (1867) [wfo-0001110680] synonym Isoetes engelmannii var. valida Engelm. Manual [Gray], ed. 5 677 (1867) [wfo-0001110680]homotypic Isoetes valida Clute Fern Allies 236, 260 (1905) [wfo-0001110683] I. vanensis M.Keskin & G.Zare Phytotaxa 269(4): 295 (2016) [wfo-0001346380] I. vermiculata Hickey Ann. Missouri Bot. Gard. 76: 1160, f.1-3 (1989) [wfo-0001114588] I. virginica N.Pfeiff. Claytonia 3: 29-30 (1937) [wfo-0001108969]synonym Isoetes piedmontana (N.Pfeiff.) C.F.Reed Phytologia 12: 392 (1965) [wfo-0001108965]basionym Isoetes virginica var. piedmontana N.Pfeiff. Bull. Torrey Bot. Club 66: 411 (1939) [wfo-0001120042] synonym Isoetes virginica var. piedmontana N.Pfeiff. Bull. Torrey Bot. Club 66: 411 (1939) [wfo-0001120042]homotypic Isoetes piedmontana (N.Pfeiff.) C.F.Reed Phytologia 12: 392 (1965) [wfo-0001108965] I. viridimontana M.A.Rosenthal & W.C.Taylor Amer. Fern J. 104(1): 8 (2014) [wfo-0001340138] I. weberi Herter ex U.Weber Hedwigia 63: 255-256, fig. 44-45 (1922) [wfo-1200105084]synonym Isoetes weberi Herter Beih. Bot. Centralbl., Abt. 2. 39: 254 (1922) [wfo-0001123835] I. welwitschii A.Br. ex Kuhn Filic. Afr. [Kuhn] 196 (1868) [wfo-0001110728]homotypic Calamaria welwitschii (A.Braun ex Kuhn) Kunze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123847] synonym Calamaria natalensis (Baker) Kuntze Revis. Gen. Pl. 2: 828 (1891) [wfo-0001440426] synonym Calamaria welwitschii (A.Braun ex Kuhn) Kunze Revis. Gen. Pl. 2: 828 1891 [wfo-0001123847]basionym Isoetes welwitschii A.Br. ex Kuhn Filic. Afr. [Kuhn] 196 (1868) [wfo-0001110728] synonym Isoetes natalensis Baker Handb. Fern-Allies 132 (1887) [wfo-0001110729] I. wormaldii Sim Trans. S. African Philos. Soc. 16: 299, t.5 (1906) [wfo-0001110730] I. xiangfei Y.H.Yan, Y.F.Gu & J.P.Shu Guihaia 42(10): 1626 (2022) [wfo-1000047140] I. yuhangensis Yu C.Chen & Xing Liu Phytotaxa 642(1): 42 (2024) [wfo-1000062616] I. yunguiensis Q.F.Wang & W.C.Taylor Novon 12(4): 587 (2002) [wfo-0001267378] Isoetes: Unplaced Names
valid Isoetes bhimii M.Patel & H.K.Goswami Indian Fern J. 41(2): 26 (2024) [wfo-1000083092] deprecated Isoetes braunii Unger Gen. Sp. Pl. Foss. 597 1850 [wfo-0001281050] deprecated Isoetes sect. Coromandelina Hickey & W.C.Taylor Ann. Missouri Bot. Gard. 79(3): 615. 1992 [wfo-3400002493] unknown Isoetes echinospora subsp. braunii (Engelm.) Piper & Beattie Fl. N.W. Coast : 16 (1915) [wfo-0001360058] deprecated Isoetes subg. Euphyllum Hickey Ann. Missouri Bot. Gard. 77(2): 239. 1990 [wfo-3500000646] valid Isoetes flaccida subsp. chapmanii (Engelm.) D.F.Brunt. & Kartesz Consp. North Amer. Isoet. 1: 28 (2025) [wfo-1200116689] unknown Isoetes fokiensis Y.F.Gu, M.R.Wang & Y.H.Yan Ecol. Evol. 15(9)-e72140: 4 (2025) [wfo-1000086342] deprecated Isoetes histrix f. longispina (A.Braun) Fiori Fl. Ital. Crypt., pars V: 425, f. 154 (1943) [wfo-1200106667] valid Isoetes lacustris subsp. macrospora (Durieu) D.F.Brunt. & Kartesz Consp. North Amer. Isoet. 1:46 (2025) [wfo-1200116572] deprecated Isoetes sect. Laeves H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch. C 84(2): 168. 1981 [wfo-3400002437] valid Isoetes melanopoda subsp. mississippiensis (S.W.Leonard, W.C.Taylor, Musselman & R.D.Bray) D.F.Brunt. & Kartesz Consp. North Amer. Isoet. 1:60 (2025) [wfo-1200116573] valid Isoetes pantii var. jaideepii M.Patel, M.N.Reddy & H.K.Goswami Indian Fern J. 41(2): 25 (2024) [wfo-1200113911] unknown Isoetes rimbachii H.P.Fuchs Proc. Kon. Ned. Akad. Wetensch., C 85: 226 1982 [wfo-0001230827] valid Isoetes riparia subsp. reticulata (A.A.Eaton) D.F.Brunt. & Kartesz Consp. North Amer. Isoet. 1:80 (2025) [wfo-1200116690] deprecated Isoetes riparia f. saccharata (Engelm. ex A.Gray) Proctor Amer. Fern J. 39: 119. 1949 [wfo-0001403025] unknown Isoetes riparia var. typica Proctor Amer. Fern J. 39: 119 (1949) [wfo-0001372526] valid Isoetes sajanensis Stepanov Red Book Krasnoyarsk. Territ. [ed. 3] 2(2): 497 (2022) [wfo-1000077219] deprecated Isoetes subg. Stylites (E.Amstutz) L.D.Gómez Brenesia 18: 4. 1981 [1980 publ. 1981] [wfo-3500000621] deprecated Isoetes tuckermanii var. heterospora Clute Fern Allies 227, 260 (1905) [wfo-0001410824] unknown Isoetes velata var. tegulensis c.emersa Gennari Giorn. Bot. Ital. 2: 96 (1870) [wfo-1200106704] deprecated Isoetes velata var. tegulensis b.maculosa Gennari Ann. Agric. Sci. 11: 175 (1865) [wfo-1200106703]