Isoetes × harveyi A. A. Eaton species accepted

Isoetes montezumae A. A. Eaton species accepted

Isoetes × dodgei A. A. Eaton species accepted

Isoetes nana J. B. S. Pereira species accepted

Isoetes virginica N. Pfeiff. species accepted

Isoetes coromandelina L. fil. species accepted

Isoetes echinospora Durieu species accepted

Isoetes histrix Bory & Durieu species accepted

Isoetes japonica A. Braun species accepted

Isoetes kirkii A. Braun species accepted

Isoetes lacustris L. species accepted

Isoetes olympica A. Br. species accepted

Isoetes abyssinica Chiov. species accepted

Isoetes aemulans J. P. Roux species accepted

Isoetes aequinoctialis Welw. ex A. Braun species accepted

Isoetes alcalophila Halloy species accepted

Isoetes alpina Kirk species accepted

Isoetes alstonii C. F. Reed & Verdc. species accepted

Isoetes amazonica A. Braun species accepted

Isoetes anamariae J. B. C. Pereira species accepted

Isoetes anatolica Prada & Rolleri species accepted

Isoetes andicola (Amstutz) L. D. Gómez species accepted

Isoetes andina Spruce ex Hook. species accepted

Isoetes appalachiana D. F. Brunt. & D. M. Britton species accepted

Isoetes araucaniana Macluf & Hickey species accepted

Isoetes asiatica (Makino) Makino species accepted

Isoetes attenuata C. R. Marsden & Chinnock species accepted

Isoetes australis S. Williams species accepted

Isoetes azorica Durieu species accepted

Isoetes baculata Hickey & H. P. Fuchs species accepted

Isoetes biafrana Alston species accepted

Isoetes bischlerae H. P. Fuchs species accepted

Isoetes bolanderi Engelm. species accepted

Isoetes boliviensis U. Weber species accepted

Isoetes boomii Luebke species accepted

Isoetes boryana Durieu species accepted

Isoetes boyacensis H. P. Fuchs species accepted

Isoetes bradei Herter species accepted

Isoetes brasiliensis H. P. Fuchs species accepted

Isoetes brevicula E. R. L. Johnson species accepted

Isoetes butleri Engelm. species accepted

Isoetes cangae J. B. S. Pereira, Salino & Stützel species accepted

Isoetes capensis A. V. Duthie species accepted

Isoetes caroli E. R. L. Johnson species accepted

Isoetes chubutiana Hickey, Macluf & W. C. Taylor species accepted

Isoetes creussensis Lazare & S. Riba species accepted

Isoetes cristata C. R. Marsden & Chinnock species accepted

Isoetes cubana Engelm. ex Baker species accepted

Isoetes delilei (Bory) Rothm. species accepted

Isoetes dispora Hickey species accepted

Isoetes dixitii Shende species accepted

Isoetes drummondii A. Braun species accepted

Isoetes ecuadoriensis Aspl. species accepted

Isoetes ekmanii U. Weber species accepted

Isoetes elatior F. Muell. & A. Braun species accepted

Isoetes eludens J. P. Roux, Hopper & Rhian J. Sm. species accepted

Isoetes engelmannii A. Braun species accepted

Isoetes escondidensis Halloy species accepted

Isoetes eshbaughii Hickey & H. P. Fuchs species accepted

Isoetes flaccida Shuttlew. ex A. Braun species accepted

Isoetes fluitans M. I. Romero species accepted

Isoetes fuliginosa R. L. Small & Hickey species accepted

Isoetes fuscomarginata H. P. Fuchs species accepted

Isoetes gardneriana Kunze ex Mett. species accepted

Isoetes georgiana Luebke species accepted

Isoetes giessii Launert species accepted

Isoetes gigantea U. Weber species accepted

Isoetes graniticola D. F. Brunt. species accepted

Isoetes gunnii A. Braun species accepted

Isoetes gymnocarpa (Gennari) A. Braun species accepted

Isoetes habbemensis Alston species accepted

Isoetes hallasanensis H. K. Choi, Ch. Kim & J. Jung species accepted

Isoetes harleyi J. B. C. Pereira species accepted

Isoetes haussknechtii Troia & Greuter species accepted

Isoetes hawaiiensis W. C. Taylor & W. H. Wagner species accepted

Isoetes heldreichii Wettst. species accepted

Isoetes hemivelata R. L. Small & Hickey species accepted

Isoetes herzogii U. Weber species accepted

Isoetes hewitsonii Hickey species accepted

Isoetes hieronymi U. Weber species accepted

Isoetes hopei J. R. Croft species accepted

Isoetes howellii Engelm. species accepted

Isoetes humilior F. Muell. ex A. Braun species accepted

Isoetes hyemalis D. F. Brunt. species accepted

Isoetes hypsophila Hand.-Mazz. species accepted

Isoetes inflata E. R. L. Johnson species accepted

Isoetes jaegeri Pitot species accepted

Isoetes jamaicensis Hickey species accepted

Isoetes jarmaniae D. F. Brunt., Kantvilas & M. Garrett species accepted

Isoetes jejuensis H. K. Choi, Ch. Kim & J. Jung species accepted

Isoetes junciformis D. F. Brunt. & D. M. Britton species accepted

Isoetes karstenii A. Braun species accepted

Isoetes killipii C. V. Morton species accepted

Isoetes labri-draconis N. R. Crouch species accepted

Isoetes laosiensis C. Kim & H. K. Choi species accepted

Isoetes laurentiana D. F. Brunt. species accepted

Isoetes lechleri Mett. species accepted

Isoetes libanotica Musselman, Bolin & R. D. Bray species accepted

Isoetes lithophila N. Pfeiff. species accepted

Isoetes louisianensis Thieret species accepted

Isoetes luetzelburgii U. Weber ex Luetzelb. species accepted

Isoetes malinverniana Ces. & De Not. species accepted

Isoetes maritima Underw. species accepted

Isoetes martii A. Braun ex Kuhn species accepted

Isoetes mattaponica Musselman & W. C. Taylor species accepted

Isoetes maxima Hickey, Macluf & Link-Pérez species accepted

Isoetes melanopoda Gay & Durieu species accepted

Isoetes melanospora Engelm. species accepted

Isoetes melanotheca Alston species accepted

Isoetes mexicana Underw. species accepted

Isoetes microvela D. F. Brunt. species accepted

Isoetes minima A. A. Eaton species accepted

Isoetes mississippiensis S. W. Leonard, W. C. Taylor, Musselman & R. D. Bray species accepted

Isoetes mongerensis E. R. L. Johnson species accepted

Isoetes mourabaptistae J. B. S. Pereira, P. G. Windisch, Lorscheitt. & Labiak species accepted

Isoetes muelleri A. Braun species accepted

Isoetes naipiana P. G. Windisch, Lorscheitt. & Nervo species accepted

Isoetes neoguineensis Baker species accepted

Isoetes nigritiana A. Braun species accepted

Isoetes nigroreticulata Verdc. species accepted

Isoetes novogranadensis H. P. Fuchs species accepted

Isoetes nuttallii A. Braun ex Engelm. species accepted

Isoetes occidentalis Hend. species accepted

Isoetes orcuttii A. A. Eaton species accepted

Isoetes organensis U. Weber species accepted

Isoetes orientalis Hong Liu & Q. F. Wang species accepted

Isoetes ovata N. Pfeiff. species accepted

Isoetes pallida Hickey species accepted

Isoetes palmeri H. P. Fuchs species accepted

Isoetes panamensis Maxon & C. V. Morton species accepted

Isoetes parvula Hickey species accepted

Isoetes pedersenii H. P. Fuchs ex E. I. Meza & Macluf species accepted

Isoetes perrieriana Iversen species accepted

Isoetes philippinensis Merr. & L. M. Perry species accepted

Isoetes phrygia Hausskn. species accepted

Isoetes pitotii Alston species accepted

Isoetes precocia R. L. Small & Hickey species accepted

Isoetes pringlei Underw. species accepted

Isoetes prototypus D. M. Britton & Goltz species accepted

Isoetes pseudojaponica M. Takamiya, Watan. & Ono species accepted

Isoetes pusilla C. R. Marsden & Chinnock species accepted

Isoetes quiririensis J. B. S. Pereira & Labiak species accepted

Isoetes ramboi Herter species accepted

Isoetes riparia Engelm. species accepted

Isoetes sabatina Troìa & Azzella species accepted

Isoetes saccharata Engelm. species accepted

Isoetes sahyadrii Mahab. species accepted

Isoetes savatieri Franch. species accepted

Isoetes schweinfurthii A. Braun species accepted

Isoetes sehnemii H. P. Fuchs species accepted

Isoetes septentrionalis D. F. Brunt. species accepted

Isoetes serracarajensis J. B. S. Pereira, Salino & Stützel species accepted

Isoetes sinensis T. C. Palmer species accepted

Isoetes smithii H. P. Fuchs species accepted

Isoetes spannagelii H. P. Fuchs species accepted

Isoetes spinulospora C. Jermy & Schelpe species accepted

Isoetes stellenbossiensis A. V. Duthie species accepted

Isoetes stephanseniae A. V. Duthie species accepted

Isoetes stevensii J. R. Croft species accepted

Isoetes storkii T. C. Palmer species accepted

Isoetes taiwanensis De Vol species accepted

Isoetes tamaulipana Mora-Olivo, A. Mend. & Mart.-Aval. species accepted

Isoetes tegetiformans Rury species accepted

Isoetes tennesseensis Luebke & Budke species accepted

Isoetes tenuifolia Jermy species accepted

Isoetes texana Singhurst, Rushing & W. C. Holmes species accepted

Isoetes todaroana Troìa & Raimondo species accepted

Isoetes toximontana Musselman & J. P. Roux species accepted

Isoetes transvaalensis C. Jermy & Schelpe species accepted

Isoetes triangula U. Weber species accepted

Isoetes tripus A. Braun species accepted

Isoetes × truncata (A. A. Eaton) Clute species accepted

Isoetes tuckermanii A. Braun ex Engelm. species accepted

Isoetes tuerckheimii Brause species accepted

Isoetes udupiensis P. K. Shukla, G. K. Srivast., S. K. Shukla & P. K. Rajagopal species accepted

Isoetes ulei U. Weber species accepted

Isoetes valida (Engelm.) Clute species accepted

Isoetes vanensis M. Keskin & G. Zare species accepted

Isoetes vermiculata Hickey species accepted

Isoetes viridimontana M. A. Rosenthal & W. C. Taylor species accepted

Isoetes weberi Herter ex U. Weber species accepted

Isoetes welwitschii A. Braun ex Kuhn species accepted

Isoetes wormaldii R. Sim species accepted

Isoetes yunguiensis C. F. Wang & W. C. Taylor species accepted

Isoetes candelariensis C. C. Macluf & G. J. Marquez species accepted

Isoetes changleensis Yu C. Chen & Xing Liu species accepted

Isoetes changxingensis Y. F. Gu & J. H. Shen species accepted

Isoetes longissima Bory & Durieu species accepted

Isoetes yuhangensis Yu C. Chen & Xing Liu species accepted

Isoetes saracochensis H. P. Fuchs ex Hickey species accepted

Isoetes salishensis D. F. Brunt. species accepted

Isoetes × altonharvillii Musselman & R. D. Bray species accepted

Isoetes × brittonii D. F. Brunt. & W. C. Taylor species accepted

Isoetes × bruntonii Knepper & Musselman species accepted

Isoetes × carltaylori Musselman., R. D. Bray & D. A. Knepper species accepted

Isoetes × eatonii R. Dodge species accepted

Isoetes × echtuckeri D. F. Brunt. & D. M. Britton species accepted

Isoetes × foveolata A. A. Eaton ex R. Dodge species accepted

Isoetes × gopalkrishnae Sarv. K. Singh, P. K. Shukla & N. K. Dubey species accepted

Isoetes × herb-wagneri W. C. Taylor species accepted

Isoetes × hickeyi W. C. Taylor & Luebke species accepted

Isoetes × jeffreyi D. M. Britton & D. F. Brunt. species accepted

Isoetes × marensis D. M. Britton & D. F. Brunt. species accepted

Isoetes × michinokuana M. Takamiya, M. Watanaba & K. Ono species accepted

Isoetes × novae-angliae D. F. Brunt. & D. M. Britton species accepted

Isoetes × paratunica D. F. Brunt., Mochalova & A. A. Bobrov species accepted

Isoetes × pseudotruncata D. M. Britton & D. F. Brunt. species accepted

Isoetes caroliniana (A. A. Eaton) Luebke species accepted

Isoetes × heterospora A. A. Eaton species accepted

Isoetes afloramientorum D. F. Brunt. & J. B. S. Pereira species accepted

Isoetes bilaspurensis Panigrahi species accepted

Isoetes caparaoensis J. B. S. Pereira species accepted

Isoetes coreana Y. H. Chung & H. K. Choi species accepted

Isoetes delalandei J. Lloyd species accepted

Isoetes dubsii J. B. S. Pereira species accepted

Isoetes duriei Bory species accepted

Isoetes santacruzensis J. B. S. Pereira species accepted

Isoetes shangrilaensis Xiang Li, Yuqian Huang, X. Dai & Xing Liu species accepted

Isoetes tiguliana Gennari species accepted

Isoetes × blondeaui D. F. Brunt. & P. C. Sokoloff species accepted

Isoetes × brochonii Motelay species accepted

Isoetes × fernaldii D. F. Brunt. & P. C. Sokoloff species accepted

Isoetes × jermyi D. F. Brunt. & Rumsey species accepted

Isoetes × kareniae D. F. Brunt. & P. C. Sokoloff species accepted

Isoetes × robusta (Engelm.) D. F. Brunt. species accepted

Isoetes baodongii Y. F. Gu, Y. H. Yan & Yi Jun Lu species accepted

Isoetes pirinica D. F. Brunt. & D. Ivanova species accepted

Isoetes cipoensis J. B. S. Pereira species accepted

Isoetes longifolia J. B. S. Pereira species accepted

Isoetes longpingii Y. H. Yan, Y. F. Gu & J. P. Shu species accepted

Isoetes xiangfei Y. H. Yan, Y. F. Gu & J. P. Shu species accepted

Isoetes hallei Eb. Fisch. & Lobin species accepted

Isoetes kashyapii M. Patel, M. N. Reddy & H. K. Goswami species accepted

Isoetes pichisermollii Eb. Fisch. & Lobin species accepted

Isoetes rwandensis Eb. Fisch. & Lobin species accepted

Isoetes × angeloi D. F. Brunton & K. L. Mc Intosh species accepted

Isoetes fengii Y. F. Gu & Y. H. Yan species accepted