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| Acanthodiscus clypeolus (Brun) Van Heurck 1896 |
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| Amphipentas punctata (Brightwell) Van Heurck 1896 |
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| Amphora rostrata ‘W. Smith’ according to Van Heurck 1896 |
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| Arachnoidiscus ehrenbergii sensu Van Heurck 1896 |
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| Arachnoidiscus ornatus sensu Van Heurck 1896 |
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| Asterionella formosa var. bleakeleyi (W. Smith) Van Heurck 1896 |
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| Auliscus sculptus var. caelata (J.W. Bailey) Van Heurck 1896 |
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| Baxteria brunii Van Heurck 1896 |
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| Biddulphia circinus (Bailey) Van Heurck 1896 |
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| Biddulphia concinnus Van Heurck 1896 |
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| Biddulphia consimilis (Grunow in Van Heurck) Van Heurck 1896 |
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| Biddulphia eulensteinii (Grunow in A. Schmidt) Grunow in Van Heurck 1896 |
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| Biddulphia laevis f. minor (Grunow in Van Heurck) Van Heurck 1896 |
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| Biddulphia punctata (Brightwell) Van Heurck 1896 |
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| Bruniella circularis (Brun) Van Heurck 1896 |
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| Bruniella coronalis (Brun) Van Heurck 1896 |
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| Campylodiscus decorus f. minima Van Heurck 1896 |
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| Campylodiscus hibernicus var. noricus (Ehrenberg; Ehrenberg) Van Heurck 1896 |
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| Campylostylus striatus Shadbolt ex Van Heurck 1896 |
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| Chaetoceros paradoxus (paradoxum) var. eibenii (Grunow in Van Heurck) Grunow in Van Heurck 1896 |
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| Coscinodiscus lamprotediscus Van Heurck 1896 |
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| Coscinodiscus radiatus var. asteromphalus (Ehrenberg; Ehrenberg) Van Heurck 1896 |
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| Coscinodiscus radiatus var. centralis (Ehrenberg; Ehrenberg) Van Heurck 1896 |
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| Coscinodiscus radiatus var. concinnus (W. Smith) Van Heurck 1896 |
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| Coscinodiscus radiatus var. jonesianus (Greville) Van Heurck 1896 |
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| Coscinodiscus radiatus var. jonesianus (jonesiana) (Greville) Van Heurck 1896 |
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| Coscinodiscus radiatus var. oculusiridis (oculus-iridis) (Ehrenberg; Ehrenberg) Van Heurck 1896 |
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| Cymatopleura elliptica var. hibernica (W. Smith) Van Heurck 1896 |
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| Cymbella amphicephala var. anglica (Lagerstedt) Van Heurck 1896 |
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| Cymbella laevis var. rupicola (Grunow in Schmidt et al.) Van Heurck 1896 |
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| Denticella granulata (Roper) Van Heurck 1896 |
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| Diatoma anceps var. anomalum (W. Smith) Van Heurck 1896 |
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| Encyonema gracile var. scotica (W. Smith) Van Heurck 1896 |
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| Encyonema lunatum (W. Smith) Van Heurck 1896 |
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| Eunotia pectinalis var. soleirolii (Kützing) Van Heurck 1896 |
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| Eunotia veneris var. obtusiuscula (Grunow in Van Heurck) Van Heurck 1896 |
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| Fragilaria tenuicollis var. intermedia (Grunow in litt.) Van Heurck 1896 |
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| Fragilaria undata var. constricta Van Heurck 1896 |
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| Gomphonema constrictum var. curta (Grunow in Van Heurck) Van Heurck 1896 |
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| Gomphonema constrictum f. curta (Grunow in Van Heurck) Van Heurck 1896 |
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| Gossleriella radiata Schutt ex Van Heurck 1896 |
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| Grammatophora serpentina var. pusilla (Greville) Van Heurck 1896 |
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| Grunoviella (Grunowiella) gemmata (Grunow) Van Heurck 1896 |
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| Grunoviella (Grunowiella) marina (Gregory) Van Heurck 1896 |
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| Haynaldella (Haynaldiella) antiqua sensu Van Heurck 1896 |
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| Helminthopsis weissflogii Van Heurck 1896 |
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| Hyalodiscus subtilis f. minor Van Heurck 1896 |
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| Kentrodiscus hungaricus Van Heurck 1896 |
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| Leudugeria janischii (Grunow in Cleve & Moller; Grunow in Van Heurck) Van Heurck 1896 |
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| Licmophora ehrenbergii var. ovata (W. Smith) Van Heurck 1896 |
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| Muelleriella limbata (Ehrenberg) Van Heurck 1896 |
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| Muelleriella limbata var. cristagalli (Tempère & Brun in Brun & Tempère) Van Heurck 1896 |
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| Muelleriella limbata var. delicatula Van Heurck 1896 |
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| Navicula advena var. parca (Schmidt in Schmidt et al.) Van Heurck 1896 |
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| Navicula crucigerum (crucigera) Wm Smith Van Heurck 1896 |
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| Navicula fusca var. gregorii (Cleve) Van Heurck 1896 |
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| Navicula granulata var. maculosa (Donkin) Van Heurck 1896 |
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| Navicula iridis var. affinis Van Heurck 1896 |
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| Navicula iridis var. firma (Kützing) Van Heurck 1896 |
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| Navicula nobilis var. gentilis (Donkin) Van Heurck 1896 |
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| Navicula smithii (Agardh) Van Heurck 1896 |
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| Navicula smithii var. aestiva (Donkin) Van Heurck 1896 |
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| Navicula smithii var. scutellum (O'Meara) Van Heurck 1896 |
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| Navicula splendida var. puella (Schmidt in Schmidt et al.) Van Heurck 1896 |
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| Navicula suborbicularis var. coffeaeformis (Schmidt) Van Heurck 1896 |
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| Navicula ulvacea (ulvoides) (Berkeley in litt., Kutzing) Van Heurck 1896 |
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| Nitzschia filiformis (W. Smith) Van Heurck 1896 |
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| Nitzschia martiana (Agardh; Agardh) Van Heurck 1896 |
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| Nitzschia paradoxa var. major Van Heurck 1896 |
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| Nitzschia subcohaerens (Grunow) Van Heurck 1896 |
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| Nitzschia subcohaerens var. scotica (Grunow in Van Heurck) Van Heurck 1896 |
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| Omphalopelta undulata Van Heurck 1896 |
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| Orthotropis lepidoptera (Gregory) Van Heurck 1896 |
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| Orthotropis lepidoptera var. pusilla (Gregory) Van Heurck 1896 |
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| Orthotropis maxima (Gregory) Van Heurck 1896 |
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| Perithyra denaria Ehrenberg ex Van Heurck 1896 |
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| Perithyra quaternaria Ehrenberg ex Van Heurck 1896 |
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| Pleurosigma angulatum var. major (Grunow in Van Heurck) Van Heurck 1896 |
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| Pleurosigma attenuatum var. scalprum (Gaillon in Turpin) Van Heurck 1896 |
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| Pleurosigma intermedium var. nubecula (W. Smith) Van Heurck 1896 |
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| Podocystis spathulata (Shadbolt) Van Heurck 1896 |
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| Pritchardia insignis var. mediterranea Van Heurck 1896 |
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| Pterotheca aculeifera (aculifera) (Grunow in Van Heurck) Van Heurck 1896 |
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| Pyxidicula brevis (Greville) Van Heurck 1896 |
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| Radiopalma brunii Van Heurck 1896 |
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| Reicheltia nobilis (Reichelt ex Tempère) Van Heurck 1896 |
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| Rhizosolenia imbricata var. shrubsolei (shrubsolii) (Cleve) Van Heurck 1896 |
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| Rutilariopsis recens (Cleve) Van Heurck 1896 |
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| Stenopterobia anceps (Lewis) Brébisson ex Van Heurck 1896 |
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| Stenopterobia baileyi (Lewis) Van Heurck 1896 |
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| Stenopterobia delicatissima (Lewis) Van Heurck 1896 |
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| Stenopterobia intermedia (Lewis) Van Heurck 1896 |
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| Surirella ovalis var. minuta (Brébisson) Van Heurck 1896 |
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| Surirella ovalis var. salina (W. Smith) Van Heurck 1896 |
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| Surirella (Suriraya) biseriata var. amphioxys (W. Smith) Van Heurck 1896 |
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| Syndetocystis barbadensis Ralfs in Van Heurck 1896 |
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| Synedra pulchella var. vertebra (vertebrata) (Gregory) Van Heruck 1896 |
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| Synedra vaucheriae var. deformis (W. Smith) Van Heurck 1896 |
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| Terpsinoe brebissonii (Kützing) Van Heurck 1896 |
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| Tetracyclus lacustris var. emarginatus (marginata) (Ehrenberg; Ehrenberg) Van Heurck 1896 |
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| Tetracyclus lacustris var. marginata Van Heurck 1896 |
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| Thalassionema nitzschioides (Grunow) Van Heurck 1896 |
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| Tropidoneis lepidoptera var. pusilla (Gregory) Van Heurck 1896 |
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| Willemoesia humilis (Rattray) Van Heurck 1896 |
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| Zygoceros concinnus Van Heurck 1896 |
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