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| Actinoptychus senarius var. denarius (Ehrenberg) O'Meara 1875 |
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| Actinoptychus senarius var. duodenarius (Ehrenberg) O'Meara 1875 |
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| Actinoptychus senarius var. sedenarius (Ehrenberg) O'Meara 1875 |
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| Actinoptychus senarius var. vicenarius (Ehrenberg) O'Meara 1875 |
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| Brebissonia boeckii (Ehrenberg) O’Meara 1875 |
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| Coscinodiscus centralis sensu O'Meara 1875 |
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| Coscinodiscus ehrenbergii O'Meara 1875 |
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| Coscinodiscus gregorii O'Meara 1875 |
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| Coscinodiscus smithii O'Meara 1875 |
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| Denticula mutabilis (W. Smith) O'Meara 1875 |
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| Fragilaria maxima O'Meara 1875 |
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| Lysigonium westii (W. Smith) O'Meara 1875 |
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| Lysigonium wrightii (O'Meara) O'Meara 1875 |
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| Mastogloia closeii (closei) O'Meara 1875 |
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| Mastogloia convergens O'Meara 1875 |
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| Mastogloia costata O’Meara 1875 |
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| Mastogloia smithii var. capitata O’Meara 1875 |
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| Mastogloia smithii var. capitata O'Meara 1875 |
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| Navicula acuta (W. Smith) O’Meara 1875 |
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| Navicula arraniensis O’Meara 1875 |
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| Navicula barkeriana O’Meara 1875 |
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| Navicula bicapitata O'Meara 1875 |
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| Navicula bicapitata var. constricta (Grunow) O'Meara 1875 |
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| Navicula bicapitata var. crucifera O'Meara 1875 |
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| Navicula caerulea O'Meara 1875 |
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| Navicula cleviana O'Meara 1875 |
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| Navicula cluthensis var. producta O'Meara 1875 |
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| Navicula coerulea O'Meara 1875 |
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| Navicula collisiana O'Meara 1875 |
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| Navicula crabro var. denticulata O'Meara 1875 |
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| Navicula crabro var. intermedia O’Meara 1875 |
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| Navicula crucifera O'Meara 1875 |
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| Navicula cuneata O'Meara 1875 |
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| Navicula cuspis O'Meara 1875 |
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| Navicula davidsoniana O'Meara 1875 |
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| Navicula decipiens O'Meara 1875 |
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| Navicula deliginensis O'Meara 1875 |
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| Navicula divergens var. elliptica O’Meara 1875 |
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| Navicula divergens var. longa O'Meara 1875 |
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| Navicula donkinia O’Meara 1875 |
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| Navicula elliptica var. costata O'Meara 1875 |
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| Navicula elliptica var. davidsonii O'Meara 1875 |
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| Navicula elliptica var. ovalis (W. Smith) O’Meara 1875 |
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| Navicula elliptica var. parva O'Meara 1875 |
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| Navicula elongata Grunow 1875 |
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| Navicula expleta O'Meara 1875 |
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| Navicula franciscae O'Meara 1875 |
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| Navicula galvagensis O'Meara 1875 |
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| Navicula gibba var. boeckii (Rabenhorst) O'Meara 1875 |
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| Navicula gibba var. parva (Grunow) O'Meara 1875 |
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| Navicula globifera O'Meara 1875 |
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| Navicula gregorii (gregoryi) O'Meara 1875 |
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| Navicula grundleriana O'Meara 1875 |
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| Navicula grunowii O'Meara 1875 |
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| Navicula hibernica O’Meara 1875 |
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| Navicula humerosa var. fuscata (Schumann) O'Meara 1875 |
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| Navicula humerosa var. quadrata (Gregory) O'Meara 1875 |
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| Navicula icostauron (isostauron) (Ehrenberg) O'Meara 1875 |
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| Navicula incisa O'Meara 1875 |
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| Navicula iridis var. affinis (Ehrenberg) O’Meara 1875 |
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| Navicula iridis var. amphigomphus (Ehrenberg) O’Meara 1875 |
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| Navicula johnsonii (W. Smith) O'Meara 1875 |
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| Navicula lagerstedtii O'Meara 1875 |
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| Navicula lucida O'Meara 1875 |
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| Navicula lyra var. constricta O'Meara 1875 |
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| Navicula lyra var. costata O'Meara 1875 |
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| Navicula lyra var. elliptica (W. Smith) O’Meara 1875 |
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| Navicula lyra var. forcipata (Greville) O'Meara 1875 |
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| Navicula lyra var. grunovii O'Meara 1875 |
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| Navicula lyra var. minor O'Meara 1875 |
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| Navicula lyra var. seductilis (Schmidt in Schmidt et al.) O'Meara 1875 |
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| Navicula marginata (O'Meara) O'Meara 1875 |
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| Navicula maxima var. lata O'Meara 1875 |
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| Navicula maxima var. linearis (Grunow) O'Meara 1875 |
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| Navicula menapiensis O'Meara 1875 |
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| Navicula microstauron (Ehrenberg) O'Meara 1875 |
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| Navicula moreii (morei) O'Meara 1875 |
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| Navicula nebulosa var. suborbicularis O'Meara 1875 |
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| Navicula nodosa var. staurophora O'Meara 1875 |
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| Navicula papillifera O'Meara 1875 |
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| Navicula pfitzeriana O'Meara 1875 |
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| Navicula plumbicolor O'Meara 1875 |
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| Navicula pusilla var. lanceolata (Grunow) O’Meara 1875 |
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| Navicula pygmaea var. cuneata O'Meara 1875 |
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| Navicula richardsoniana O'Meara 1875 |
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| Navicula rostellifera O'Meara 1875 |
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| Navicula rupestris O'Meara 1875 |
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| Navicula scalaris (Ehrenberg) O'Meara 1875 |
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| Navicula schmidtii O’Meara 1875 |
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| Navicula scutellum (O'Meara) O'Meara 1875 |
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| Navicula smithii var. rhombica O’Meara 1875 |
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| Navicula smithii var. subrotunda O'Meara 1875 |
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| Navicula spectabilis var. sub-orbicularis O'Meara 1875 |
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| Navicula stokesiana O'Meara 1875 |
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| Navicula suborbicularis var. forficula (O'Meara) O'Meara 1875 |
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| Navicula suborbicularis var. parva O'Meara 1875 |
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| Navicula tabellaria var. acrosphaeria (Brébisson) O'Meara 1875 |
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| Navicula tenuirostris O'Meara 1875 |
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| Navicula termes (Ehrenberg) O'Meara 1875 |
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| Navicula translucida O'Meara 1875 |
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| Navicula tumida var. linearis O'Meara 1875 |
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| Navicula undosa sensu O'Meara 1875 |
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| Navicula undulata O'Meara 1875 |
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| Navicula vickersii O'Meara 1875 |
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| Navicula williamsonii O'Meara 1875 |
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| Odontidium elegans (Kützing) O'Meara 1875 |
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| Odontidium inflatum (W. Smith) O'Meara 1875 |
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| Odontidium sinuatum (Thwaites in W. Smith) O'Meara 1875 |
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| Odontidium teune (Kützing) O’Meara 1875 |
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| Odontodiscus anglicus (Donkin) O'Meara 1875 |
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| Odontodiscus hibernicus O'Meara 1875 |
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| Orthosira roeseana (Rabenhorst) O'Meara 1875 |
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| Orthosira sulcata (Ehrenberg) O'Meara 1875 |
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| Ralfsia hyalina (Kützing) O'Meara 1875 |
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| Ralfsia minima (Ralfs) O'Meara 1875 |
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| Ralfsia tabellaria O'Meara 1875 |
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| Rhaphoneis amphiceros var. leptoceros (Ehrenberg) O'Meara 1875 |
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| Rhaphoneis (Raphoneis) harrisonii (W. Smith) O'Meara 1875 |
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| Synedra acula var. tenuissima (Kützing) O’Meara 1875 |
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| Synedra capitata var. longiceps (Ehrenberg) O’Meara 1875 |
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| Synedra pulchella var. acicularis (W. Smith) O'Meara 1875 |
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| Synedra pulchella var. gracilis (W. Smith) O'Meara 1875 |
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| Synedra pulchella var. lanceolata O'Meara 1875 |
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| Synedra pulchella var. linearis O'Meara 1875 |
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| Synedra putealis O'Meara 1875 |
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| Synedra smithii O'Meara 1875 |
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| Synedra spathulata O'Meara 1875 |
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| Synedra splendens var. radians (Kützing) O'Meara 1875 |
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| Synedra ulna var. oxyrhynchus (Kützing) O’Meara 1875 |
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