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| Achnanthes hungarica var. rivularia (Frenguelli) Frenguelli 1933 |
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| Amphipleura lindheimeri var. neotropica Frenguelli 1933 |
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| Anomoeoneis sculpta var. gigantea (M. Peragallo in Héribaud) Frenguelli 1933 |
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| Denticula yberiensis Frenguelli 1933 |
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| Diploneis elliptica var. tropica (Zimmermann) Frenguelli 1933 |
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| Diploneis zannii Frenguelli 1933 |
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| Encyonema cristatum Frenguelli 1933 |
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| Encyonema excisum (M. Peragallo & Héribaud in Héribaud) Frenguelli 1933 |
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| Encyonema excisum f. minor Frenguelli 1933 |
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| Encyonema turgidum var. itatiensis (italiensis) Frenguelli 1933 |
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| Eunotia camelus var. arcuata Frenguelli 1933 |
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| Eunotia camelus var. juga Frenguelli 1933 |
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| Eunotia camelus f. major Frenguelli 1933 |
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| Eunotia camelus f. major Frenguelli 1933 |
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| Eunotia camelus f. minor Frenguelli 1933 |
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| Eunotia camelus f. minor Frenguelli 1933 |
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| Eunotia camelus var. undulata Frenguelli 1933 |
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| Eunotia correntina Frenguelli 1933 |
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| Eunotia didyma var. jugulata Frenguelli 1933 |
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| Eunotia didyma var. papilio Frenguelli 1933 |
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| Eunotia didyma var. pileus (Ehrenberg) Frenguelli 1933 |
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| Eunotia formica f. curta Frenguelli 1933 |
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| Eunotia formica f. elongata (Grunow) Frenguelli 1933 |
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| Eunotia gracilis f. maxima Frenguelli 1933 |
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| Eunotia indica Frenguelli 1933 |
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| Eunotia indica var. bigibba Frenguelli 1933 |
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| Eunotia indica var. bigibba Frenguelli 1933 |
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| Eunotia indica var. gracilis Frenguelli 1933 |
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| Eunotia larva Frenguelli 1933 |
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| Eunotia luna f. major Frenguelli 1933 |
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| Eunotia luna var. major Frenguelli 1933 |
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| Eunotia luna f. paucistriata Frenguelli 1933 |
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| Eunotia lunaris f. arcuata Frenguelli 1933 |
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| Eunotia lunaris f. cuspidata (Schumann) Frenguelli 1933 |
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| Eunotia lunaris var. major (Grunow) Frenguelli 1933 |
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| Eunotia lunaris var. perlonga Frenguelli 1933 |
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| Eunotia lunaris f. rigida Frenguelli 1933 |
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| Eunotia lunaris f. subarcuata (Naegeli) Frenguelli 1933 |
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| Eunotia major (maius) (maior) var. gigantea Frenguelli 1933 |
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| Eunotia major (maius) (maior) f. paucistriata Frenguelli 1933 |
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| Eunotia pileata Frenguelli 1933 |
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| Eunotia producta Frenguelli 1933 |
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| Eunotia sudetica var. undulata Frenguelli 1933 |
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| Eunotia yberai Frenguelli 1933 |
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| Eunotia yberai var. major Frenguelli 1933 |
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| Eunotia yberai var. major Frenguelli 1933 |
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| Eunotia zygodon var. major Frenguelli 1933 |
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| Eunotia zygodon var. maxima Frenguelli 1933 |
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| Fragilaria brevistriata var. obtusa Frenguelli 1933 |
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| Gomphonema correntinum Frenguelli 1933 |
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| Gomphonema turris f. acuminata Frenguelli 1933 |
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| Gomphonema turris var. brasiliensis (Fricke in Schmidt et al.) Frenguelli 1933 |
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| Gomphonema turris f. coarctata Frenguelli 1933 |
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| Gomphonema yberiense Frenguelli 1933 |
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| Hantzschia elongata var. longissima Frenguelli 1933 |
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| Hantzschia exilis (Frenguelli) Frenguelli 1933 |
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| Hantzschia limi (Frenguelli) Frenguelli 1933 |
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| Melosira italica var. laevis (Ehrenberg) Frenguelli 1933 |
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| Melosira italica var. semilaevis (Grunow in Van Heurck) Frenguelli 1933 |
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| Navicula americana var. yberai Frenguelli 1933 |
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| Navicula craticularis Frenguelli 1933 |
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| Navicula cuspidata f. craticula Frenguelli 1933 |
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| Navicula fuegiana var. yberiensis Frenguelli 1933 |
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| Navicula helea Frenguelli 1933 |
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| Navicula multicopsis var. yberai Frenguelli 1933 |
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| Navicula muticopsis var. yberai Frengualli 1933 |
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| Neidium affine (affinis) var. ampliata (Ehrenberg; Ehrenberg) Frenguelli 1933 |
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| Neidium iridis var. amphigomphus (Ehrenberg) Frenguelli 1933 |
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| Neidium iridis var. dubia (Ehrenberg) Frenguelli 1933 |
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| Nitzschia elongata var. longissima Frenguelli 1933 |
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| Nitzschiella lecointei (Van Heurck) Frenguelli 1933 |
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| Nitzschiella lecointei var. correntina Frenguelli 1933 |
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| Pinnularia acrosphaeria var. americana (Tempère & Peragallo) Frenguelli 1933 |
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| Pinnularia acrosphaeria f. minor Frenguelli 1933 |
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| Pinnularia carambolae Frenguelli 1933 |
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| Pinnularia clericii (Frenguelli) Frenguelli 1933 |
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| Pinnularia clericii var. correntina Frenguelli 1933 |
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| Pinnularia correntina Frenguelli 1933 |
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| Pinnularia dactylus var. gigas (Ehrenberg) Frenguelli 1933 |
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| Pinnularia divergens var. laticeps (Frenguelli) Frenguelli 1933 |
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| Pinnularia divergens var. parallela (Brun) Frenguelli 1933 |
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| Pinnularia gibba var. parva (Grunow) Frenguelli 1933 |
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| Pinnularia gibba var. subundulata (Mayer ex Hustedt) Frenguelli 1933 |
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| Pinnularia hartleyana var. curta Frenguelli 1933 |
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| Pinnularia hemiptera var. obtusa Frenguelli 1933 |
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| Pinnularia latevittata var. spathulata (Frenguelli) Frenguelli 1933 |
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| Pinnularia microstauron f. semicruciata Frenguelli 1933 |
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| Pinnularia microstauron var. subproducta (Grunow in Van Heurck) Frenguelli 1933 |
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| Pinnularia stauroptera var. brevicostata Frenguelli 1933 |
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| Pinnularia stauroptera f. semicruciata (Cleve) Frenguelli 1933 |
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| Pinnularia subcapitata var. hybrida (Grunow in Van Heurck) Frenguelli 1933 |
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| Pinnularia torrendi (Zimmermann) Frenguelli 1933 |
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| Pinnularia torrendi var. capitata (Zimmermann) Frenguelli 1933 |
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| Pinnularia viridis var. lata (Frenguelli) Frenguelli 1933 |
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| Stauroneis anceps var. ampliata Frenguelli 1933 |
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| Stauroneis correntina Frenguelli 1933 |
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| Stauroneis phoenicenteron var. correntina Frenguelli 1933 |
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| Stauroneis phoenicenteron var. yberiana Frenguelli 1933 |
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| Stauroneis schinzii (schinzi) var. argentina Frenguelli 1933 |
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| Stauroneis schinzii (schinzi) var. maxima Frenguelli 1933 |
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