PENNATE DIATOMS WITH RAPHES - Bacillariophyceae (Navicula)
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Names in bold italic print are current names for taxa reported from the central United States.
Names in standard italic print are synonyms reported in the references cited with them.

For example, Navicula atomus (Kütz.) Grun. was reported under that name from Kansas and Oklahoma in 3 references, and it was reported under the synonym Navicula caduca Hust. by Powers (1969), which is listed under the entry for that name elsewhere in this list.

The entry for Navicula accomoda Hust. indicates that this name (reported in several references) is a synonym of Craticula accomoda (Hust.) D. Mann, which is included in another section of this list.

The names of the states are abbreviated with their postal codes: CO = Colorado, KS = Kansas, MO = Missouri, NE = Nebraska, OK = Oklahoma.

Navicula accomoda Hust. = Craticula accomoda (Hust.) D. Mann
    KS: Powers (1969), Wujek et al. (1980)
    MO: Pamperl (1980)
    OK: Pfiester et al. (1979), Troeger (1978, 1983)
    Plains States: Patrick & Reimer (1966)
Navicula acrospheria (Bréb.) Kütz. = Pinnularia abaujensis (Pant.) Ross
    KS: Curtis (1901)
    NE: Elmore (1921)
Navicula affinis Ehr. = Neidium affine (Ehr.) Pfitz.
    KS: Curtis (1901)
    NE: Ehrenberg (1856), Elmore (1921)
    OK: Ehreneberg (1856)
Navicula agma Hohn & Hellerm.
    MO: Pamperl (1980)
Navicula aikenensis Patr.
    OK: Pfiester et al. (1979)
Navicula alata Ehr. = Entomoneis alata (Ehr.) Ehr.
    OK: ?Ehreneberg (1856)
Navicula alternans Schum. = Scoliopleura alternans (Schum.) DeT.?
    KS: Curtis (1901) [see Patrick and Reimer (1966:644)]
Navicula ambigua Ehr. = Craticula ambigua (Ehrenb.) D. Mann
    KS: Curtis (1901)
    NE: Andersen & Walker (1920), Elmore (1921)
Navicula ammophila var. flanatica (Grun.) Cl.
        Synonyms:
           Navicula flanatica Grun.
Navicula amphibola Cl.
    NE: Elmore (1921), Patrick & Reimer (1966)
    OK: Kennedy & Pfiester (1984)
Navicula amphiceros Kütz. = Navicula rhyncocephala var. amphiceros (Kütz.) Grun.
    KS: ?Curtis (1901)
Navicula amphigomphus Ehr. = Neidium iridis var. amphigomphus (Ehr.) A. Mayer
    KS: Wolle (1889)
    NE: Elmore (1921)
Navicula amphilepta Ehr. nom. nud. = Neidium?
    NE: Ehreneberg (1856)
    OK: Ehreneberg (1856)
Navicula amphirhynchus Ehr. = Neidium affine var. amphirhynchus (Ehr.) Cl.
    KS: Curtis (1901)
    OK: Ehreneberg (1856)
Navicula amphisbaena Bory = Caloneis amphisbaena (Bory) Cl.
    NE: Ehreneberg (1856), Elmore (1921)
    OK: Ehreneberg (1856)
Navicula ampliatum Ehr. = Neidium ampliatum (Ehr.) Kramm.
    KS: Curtis (1901)
Navicula anglica Ralfs
    NE: Andersen & Walker (1920), Elmore (1921)
    OK: Pfiester et al. (1979)
Navicula anglica var. subsalsa (Grun.) Cl.
    KS: Wujek et al. (1980)
    OK: Pfiester et al. (1979), Troeger (1983)
Navicula angusta Grun.
    OK: Seyfer & Wilhm (1977), Wilhm et al. (1977)
    Plains States: Patrick & Reimer (1966)
Navicula appendiculata (Ag.) Kütz. = Pinnularia appendiculata (Ag.) Cl.
    NE: Andersen & Walker (1920), Elmore (1921)
Navicula arenaria Donk.
    KS: Curtis (1901), Patrick & Reimer (1966)
Navicula arvensis Hust.
    KS: Wujek et al. (1980)
    MO: Pamperl (1980)
    NE: Hoagland et al. (1982)
    OK: Kennedy & Pfiester (1984)
Navicula asellus Weigold ex Hust.
    KS: Powers (1969)
Navicula atomoides Grun. = Navicula minima Grun.
    NE: Elmore (1921)
Navicula atomus (Kütz.) Grun.
    KS: Wujek et al. (1980)
    OK: Pfiester et al. (1979), Troeger (1978)
        Synonyms:
            Navicula caduca Hust.
Navicula bacillariformis Grun. = Sellaphora laevissima (Kütz.) D. Mann
    KS: Curtis (1901)
    NE: Andersen & Walker (1920), Elmore (1921)
Navicula bacillum Ehr. = Sellaphora bacillum (Ehr.) D. Mann
    KS: Curtis (1901)
    Plains States: Patrick & Reimer (1966)
Navicula bacillum f. minor Grun. = Sellaphora bacillum (Ehr.) D. Mann
    KS: Curtis (1901)
Navicula bergenensis Hohn
    OK: Troeger (1978)
Navicula bicapitata var. hybrida Grun. = Pinnularia microstauron (Ehr.) Cl.
    KS: Curtis (1901)
Navicula bicephala Hust.
    OK: Koch & Risser (1974)
Navicula biceps Ehrenb. = Anomoeoneis sphaerophora (Ehr.) Pfitz.
    KS: Curtis (1901)
Navicula bisulcata Lagerst. = Neidium bisulcatum (Lagerst.) Cl.
    NE: Elmore (1921)
Navicula biconica Patr.
    KS: Wujek et al. (1980)
    NE: Hoagland et al. (1982)
Navicula borealis (Ehr.) Kütz. = Pinnularia borealis Ehr.
    KS: Curtis (1901)
    NE: Elmore (1921)
Navicula braunii Grun. = Pinnularia braunii (Grun.) Cl.
    NE: Elmore (1921)
Navicula brebissonii Kütz. = Pinnularia brebissonii (Kütz.) Rab.
    KS: Curtis (1901)
    NE: Andersen & Walker (1920), Elmore (1921), Webber (1890)
Navicula caduca Hust. = Navicula atomus (Kütz.) Grun.
    KS: Powers (1969)
Navicula canalis Patr.
    KS: Powers (1969)
    OK: Wilhm et al. (1977), Williams (1962), WPSS (1966)
    Plains States: Patrick & Reimer (1966)
Navicula cancellata var. retusa (Bréb.) Cl.
        Synonyms:
            Navicula retusa Bréb.
Navicula capitata Ehr.
    NE: Hoagland et al. (1982)
    OK: Koch & Risser (1974), Pfiester et al. (1979), Seyfer & Wilhm (1977), Troeger (1983), 
           Wilhm et al. (1977), Wilhm et al. (1978)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula capitata Ehr.
Navicula capitata var. hungarica (Grun.) Ross
    KS: Harris & Eberle (2001), Wujek et al. (1980)
    MO: Pamperl (1980)
    OK: Koch (1975)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula humilis Donk.
            Navicula hungarica Grun.
Navicula capitatoradiata Germain ex Gasse
        Synonyms:
            Navicula salinarum var. intermedia (Grun.) Cl.
Navicula cincta (Ehr.) Ralfs
    KS: Boyer (1927b)
    MO: Pamperl (1980)
    NE: Elmore (1921)
    Plains States: Patrick & Reimer (1966)
Navicula circumtexta Meist. ex Hust.
    KS: Czarnecki & Reinke (1981), Harris & Eberle (2001)
Navicula citrus Krasske
    OK: ?Hern et al. (1979)
Navicula cocconeiformis Greg. ex Grun. = Cavinula cocconeiformis (Greg. ex Grun.) 
    D. Mann & Stickle
    NE: Elmore (1921), Patrick & Reimer (1966)
Navicula columnaris Ehr. = Neidium affine var. amphirhynchus (Ehr.) Cl.
    KS: Curtis (1901)
Navicula commutata Grun. = Pinnularia?
    KS: Curtis (1901) [see Patrick and Reimer (1966:612)]
Navicula confervacea (Kütz.) Grun. = Diadesmis confervacea Kütz.
    KS: Wujek et al. (1980)
Navicula confervacea var. hungarica Grun. = Diadesmis peregrina W. Sm.
    KS: Curtis (1901)
Navicula confervacea var. peregrina (W. Sm.) Grun. = Diadesmis peregrina W. Sm.
    KS: Curtis (1901), Patrick & Reimer (1966)
    MO: Pamperl (1980)
    OK: Troeger (1978, 1983), Troeger & Menzel (1986)
Navicula conspicua A.S. = Pinnularia conspicua (A.S.) Cl.
    KS: Curtis (1901)
Navicula contenta var. biceps (Arn.) V.H. = Diadesmis contenta (Grun.) D. Mann
    OK: Troeger (1983)
Navicula crucicula (W. Sm.) Donk.
    KS: Wujek et al. (1980)
    NE: Elmore (1921), Patrick & Reimer (1966)
Navicula cryptocephala Kütz.
    CO: WPSS (1961-1963)
    KS: Curtis (1901), Powers (1969), Wenke & Eberle (1986), Williams (1962), ?Williams et al. (1979), 
          WPSS (1961-1963, 1966), Wujek et al. (1980)
    MO: Pamperl (1980), Williams (1962), WPSS (1961-1963), WPSS (1966)
    NE: Elmore (1921), Hoagland et al. (1982), Roemer et al. (1984), Webber (1890), WPSS (1961-1963)
    OK: Koch (1975), Koch & Risser (1974), Pfiester et al. (1979), Seyfer & Wilhm (1977), Troeger (1978, 1983),
           Wilhm et al. (1977), Williams (1964), WPSS (1961-1963)
    Plains States: Patrick & Reimer (1966)
Navicula cryptocephala f. minuta Peters.
    OK: Troeger (1983), Troeger & Menzel (1986)
Navicula cryptocephala var. exilis (Kütz.) Grun.
    KS: Powers (1969)
    Plains States: Patrick & Reimer (1966)
Navicula cryptocephala var. veneta (Kütz.) Rab.
    KS: Harris & Eberle (2001), Powers (1969), Wenke & Eberle (1986), Wujek et al. (1980)
    MO: Pamperl (1980)
    NE: Andersen & Walker (1920)
    OK: Koch (1975), Koch & Risser (1974), Troeger (1978, 1983)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula pumila Grun.
            Navicula veneta Kütz.
Navicula cuspidata (Kütz.) Kütz. = Craticula cuspidata (Kütz.) D. Mann
    CO: M.K. Morris et al. (1979b)
    KS: Curtis (1901), McFarland et al. (1964), Wenke & Eberle (1986), Williams et al. (1979), 
           Wujek et al. (1980)
    MO: Pamperl (1980), Williams (1962), WPSS (1966)
    NE: Andersen & Walker (1920)
    OK: Hern et al. (1979), Koch (1975), Koch & Risser (1974), Pfiester et al. (1979), Seyfer & Wilhm (1977),
           Troeger (1978, 1983), Troeger & Menzel (1986), Wilhm et al. (1977), Wilhm et al. (1978)
    Plains States: Patrick & Reimer (1966)
Navicula cuspidata f. craticula (V.H.) Perag. & Hérib. = Craticula cuspidata (Kütz.) D. Mann?
    NE: Andersen & Walker (1920)
Navicula cuspidata var. ambigua (Ehr.) Cl. = Craticula ambigua (Kütz.) D. Mann
    KS: McFarland et al. (1964), Powers (1969)
Navicula cuspidata var. major Meist. = Craticula cuspidata var. major (Meist.) comb. nov.?
    KS: Wenke & Eberle (1985)
    OK: Pfiester et al. (1979), Troeger (1978), Troeger & Menzel (1986)
Navicula cymbula Donk. = Navicula lanceolata var. cymbula (Donk.) Cl.
    KS: Curtis (1901)
Navicula decurrens (Ehr.) Kütz. = Pinnularia decurrens Ehr.
    KS: Curtis (1901)
    NE: Elmore (1921)
Navicula decussis Østr.
    KS: Wujek et al. (1980)
    NE: Roemer et al. (1984)
    OK: ?Koch (1975), Koch & Risser (1974), Pfiester et al. (1979)
Navicula demissa Hust.
    MO: Pamperl (1980)
Navicula dicephala W. Sm = Placoneis dicephala (W. Sm.) Meresch.
    KS: Curtis (1901), Wujek (1965)
    NE: Andersen & Walker (1920), Elmore (1921)
Navicula dicephala f. minor Grun. = Placoneis dicephala f. minor (Grun.) Cox
    KS: Curtis (1901)
Navicula digitoradiata (Greg.) Ralfs
    NE: Elmore (1921)
Navicula dilatata Ehr. = Neidium dilatatum (Ehr.) Cl.
    OK: ?Ehrenberg (1856)
Navicula dilatata Ehr. sensu A.S. = Neidium iridis var. amphigomphus (Ehr.) A Mayer
    KS: Curtis (1901) [see Eberle (1982:92-93)]
Navicula dirhynchus = ?
    KS: Curtis (1901) [see Eberle (1982:88)]
Navicula divergens f. minor A.S. = Pinnularia microstauron (Ehr.) Cl.
    KS: Curtis (1901)
Navicula dubia Ehr. = Neidium dubium (Ehr.) Cl.
    KS: Curtis (1901)
    NE: Elmore (1921)
Navicula elginensis (Greg.) Ralfs = Placoneis elginensis (Greg.) Cox
    KS: Wujek et al. (1980)
    OK: Koch & Risser (1974), Troeger (1978, 1983), Wilhm et al. (1977)
    Plains States: Patrick & Reimer (1966)
Navicula elginensis var. neglecta (Krasske) Patr. = Placoneis elginensis var. neglecta (Krasske) 
    comb. nov.?
    OK: Pfiester et al. (1979)
Navicula elliptica Kütz. = Diploneis elliptica (Kütz.) Cl.
    KS: Curtis (1901), Wolle (1889) [see Eberle (1982:41-42)]
    NE: Andersen & Walker (1920)
Navicula elliptica var. minuta Grun. = Diploneis?
    KS: Curtis (1901) [see Eberle (1982:42)]
Navicula elliptica var. oblongella (Naeg. ex Kütz.) Grun. = Diploneis oblongella
    (Naeg. ex Kütz.) Ross
    KS: Curtis (1901)
Navicula elmorei Patr.
    NE: Patrick & Reimer (1966)
    OK: Troeger (1983)
Navicula excelsa Krasske
        Synonyms:
            Navicula vaucheriae var. densistriata Lund
Navicula exigua Greg. ex Grun. = Placoneis exigua (Greg. ex Grun.) Meresch.
    OK: Koch & Risser (1974), Wilhm et al. (1977), Wilhm et al. (1978)
Navicula exigua var. capitata Patr. = Placoneis exigua var. capitata (Patr.) comb. nov.?
    KS: Wujek et al. (1980)
    MO: Pamperl (1980)
    Plains States: Patrick & Reimer (1966)
Navicula exilissima Grun.
    MO: Pamperl (1980)
Navicula falaisiensis Grun.
    OK: Troeger (1983)
Navicula festiva Krasske
    MO: Pamperl (1980)
    OK: Koch & Risser (1974), Troeger (1983)
Navicula firma Kütz. = Neidium iridis (Ehr.) Cl.
    KS: Curtis (1901)
Navicula firma var. subampliata = Neidium?
    KS: Curtis (1901) [see Eberle (1982:93)]
Navicula flanatica Grun. = Navicula ammophila var. flanatica (Grun.) Cl.
    KS: Curtis (1901)
Navicula fontinalis Grun. = Caloneis bacillum (Grun.) Cl.
    KS: Curtis (1901)
Navicula fulva Ehr. = Craticula cuspidata (Kütz.) D. Mann
    NE: Elmore (1921)
    OK: Ehrenberg (1856)
Navicula gastrum (Ehr.) Kütz.
    NE: Andersen & Walker (1920), Elmore (1921)
    Plains States: Patrick & Reimer (1966)
Navicula gibba Ehr. = Rhopalodia gibba (Ehr.) O. Müll.
    KS: Curtis (1901), Wolle (1889)
Navicula gibba var. brevistriata V.H. = Pinnularia parvula (Ralfs) Cl.-Eul.
    NE: Andersen & Walker (1920)
Navicula gottlandica Grun.
    KS: Czarnecki & Reinke (1981)
    OK: Pfiester et al. (1979)
Navicula gracilis Ehr. = Navicula tripunctata (O. Müll.) Bory
    KS: Curtis (1901)
    NE: Elmore (1921)
    OK: Ehrenberg (1856), Leake (1945)
Navicula gracilis var. schizonemoides V.H. = Navicula tripunctata var. schizonemoides (V.H.) Patr.
    KS: Powers (1969)
Navicula graciloides A. Mayer
    KS: Harris & Eberle (2001), Wujek et al. (1980)
    MO: Pamperl (1980)
    NE: Hoagland et al. (1982)
    OK: Pfiester et al. (1979)
Navicula gregaria Donk.
    KS: Curtis (1901), Harris & Eberle (2001)
    Plains States: Patrick & Reimer (1966)
Navicula grimmei Krasske
    KS: Patrick & Reimer (1966)
Navicula guatemalensis Cl. & Grev.
    NE: Elmore (1921), Patrick & Reimer (1966)
Navicula gysingensis Foged
    KS: Wujek et al. (1980)
    OK: Kennedy & Pfiester (1984)
Navicula halophila (Grun.) Cl. = Craticula halophila (Grun.) D. Mann
    KS: Wujek et al. (1980)
    NE: Hoagland et al. (1982)
    OK: Troeger (1978), Wilhm et al. (1978)
Navicula halophila f. robusta Hust. = Craticula halophila f. robusta (Hust.) comb. nov.?
    KS: Czarnecki & Reinke (1981)
Navicula halophila f. tenuirostris Hust. = Craticula halophila f. tenuirostris (Hust.) comb. nov.?
    KS: Wujek et al. (1980)
    OK: Troeger (1978)
Navicula hambergii Hust.
    OK: Troeger (1983)
Navicula hemiptera Kütz. = Pinnularia acuminata W. Sm.?
    KS: Curtis (1901) [see Eberle (1982:114) and Patrick and Reimer (1966:621)]
Navicula heufleri Grun.
    KS: Wenke & Eberle (1986), Williams et al. (1979), Wujek et al. (1980)
    OK: Troeger (1978)
    Plains States: Patrick & Reimer (1966)
Navicula heufleri var. leptocephala (Bréb. ex Grun.) Perag.
    NE: Patrick & Reimer (1966)
    OK: Troeger (1978)
Navicula hilseana (Jan.) Jan. = Pinnularia subcapitata Greg. [see Patrick and Reimer (1966:595-596)]
    NE: Andersen & Walker (1920)
Navicula humilis Donk. = Navicula capitata var. hungarica (Grun.) Ross
    NE: Andersen & Walker (1920)
Navicula hungarica Grun. = Navicula capitata var. hungarica (Grun.) Ross
    KS: Powers (1969)
    NE: Elmore (1921)
Navicula hustedtii Krasske
    OK: Troeger (1983)
Navicula ilopangoensis Hust.
    OK: Koch (1975)
Navicula inflata = Navicula?
    KS: Curtis (1901) [see Eberle (1982:88)]
Navicula insociabilis Krasske = Fallacia insociabilis (Krasske) D. Mann
    MO: Pamperl (1980)
Navicula integra (W. Sm.) Ralfs
    KS: Harris & Eberle (2001), Wujek et al. (1980)
    NE: Elmore (1921), Patrick & Reimer (1966)
    OK: Kennedy & Pfiester (1984)
Navicula interrupta Kütz. = Diploneis interrupta (Kütz.) Cl.
    KS: Wolle (1889)
Navicula interrupta (W. Sm.) A.S. = Pinnularia biceps Greg.
    KS: Curtis (1901) [see Eberle (1982:106)]
Navicula iridis Ehrenb. = Neidium iridis (Ehr.) Cl.
    NE: Andersen & Walker (1920), Elmore (1921)
Navicula iridis var. amphigomphus Ehr. = Neidium iridis var. amphigomphus (Ehr.) A. Mayer
    NE: Webber (1889, 1890)
Navicula jaerenfeltii Hust. = Cavinula jaerenfeltii (Hust.) D. Mann & Stickle
    OK: Pfiester et al. (1979)
Navicula lacustris Greg. = Cavinula lacustris (Greg.) D. Mann & Stickle
    OK: Wilhm et al. (1978)
Navicula laevissima Kütz. = Sellaphora laevissima (Kütz.) D. Mann
    KS: Wujek et al. (1980)
    OK: Seyfer & Wilhm (1977)
    Plains States: Patrick & Reimer (1966)
Navicula lanceolata (Ag.) Kütz.
    KS: Curtis (1901), Elmore (1921), Harris & Eberle (2001), Powers (1969), Wenke & Eberle (1986), 
          Wujek et al. (1980)
    NE: Andersen & Walker (1920), Elmore (1921), Hoagland et al. (1982), Rosowski et al. (1986), 
          Webber (1890)
    OK: Koch (1975), Koch & Risser (1974), Pfiester et al. (1979), Troeger (1978), Troeger & Menzel (1986)
    Plains States: Patrick & Reimer (1966)
Navicula lanceolata var. cymbula (Donk.) Cl.
        Synonyms:
            Navicula cymbula Donk.
Navicula lata (Bréb.) Kütz. = Pinnularia lata (Bréb.) Rab.
    NE: Elmore (1921)
Navicula latens Krasske
    NE: ?F.A. Morris et al. (1979)
Navicula legumen Ehr. = Pinnularia legumen (Ehr.) Ehr.
    NE: Elmore (1921)
Navicula leptogongyla Ehr. = Caloneis ventricosa (Ehr.) Meist.
    KS: Curtis (1901)
Navicula liburnica Grun. = Caloneis oregonica (Ehr.) Patr.
    NE: Elmore (1921)
Navicula limosa Kütz. = Caloneis limosa (Kütz.) Patr.
    NE: Andersen & Walker (1920)
Navicula linearis Grun. = Caloneis linearis (Grun.) Boyer
    KS: Curtis (1901)
Navicula longa (Greg.) Ralfs
    KS: Curtis (1901)
Navicula longirostris Hust.
    MO: Pamperl (1980)
    OK: Troeger (1978)
Navicula luzonensis Hust.
    OK: Wilhm et al. (1977), Wilhm et al. (1978)
Navicula macra Grun. = Pinnularia molaris (Grun.) Cl.
    KS: Curtis (1901)
Navicula major (Kütz.) Kütz. = Pinnularia maior (Kütz.) Rab.
    KS: Curtis (1901), Wolle (1889)
    NE: Andersen & Walker (1920), Elmore (1921), Webber (1889, 1890)
Navicula menisculus Schum.
    KS: Powers (1969), Wujek (1965)
    NE: Elmore (1921)
    OK: Pfiester et al. (1979)
Navicula menisculus var. obtusa Hust.
    KS: Powers (1969)
Navicula menisculus var. upsaliensis (Grun.) Grun.
    KS: Wujek et al. (1980)
    MO: Pamperl (1980)
    NE: Hoagland et al. (1982), Patrick & Reimer (1966), Roemer et al. (1984)
    OK: Troeger (1983)
Navicula mesolepta Ehr. = Pinnularia mesolepta (Ehr.) W. Sm.
    KS: Curtis (1901) [ see Eberle (1982:115)]
    NE: Andersen & Walker (1920), Elmore (1921)
Navicula mesostyla Ehr. = Pinnularia mesostyla (Ehr.) W. Sm.
    KS: Curtis (1901)
Navicula minima Grun.
    KS: Wenke & Eberle (1985)
    MO: Pamperl (1980)
    OK: Koch & Risser (1974), Pfiester et al. (1979), Seyfer & Wilhm (1977), Troeger (1978, 1983)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula atomoides Grun.
Navicula miniscula Grun.
    KS: Wujek et al. (1980)
    MO: Pamperl (1980)
    OK: Pfiester et al. (1979), Troeger (1983)
Navicula minnewaukonensis Elm.
    OK: Pfiester et al. (1979), Troeger (1978)
Navicula molesta Krasske
    MO: Pamperl (1980)
Navicula mucronata Elm. = Neidium dubium f. constrictum Hust.
    NE: Elmore (1921)
Navicula muralis Grun.
    OK: Pfiester et al. (1979)
Navicula mutica Kütz. = Luticola mutica (Kütz.) D. Mann
    KS: Powers (1969)
    NE: Elmore (1921)
    OK: Koch & Risser (1974), Pfiester et al. (1979), Seyfer & Wilhm (1977), Troeger (1978, 1983)
    Plains States: Patrick & Reimer (1966)
Navicula mutica var. cohnii (Hilse) Grun. = Luticolacohnii (Hilse) D. Mann
    KS: Powers (1969), Wujek et al. (1980)
    NE: Hoagland et al. (1982)
    OK: Pfiester et al. (1979), Troeger (1978)
Navicula mutica var. goeppertiana (Bleisch ex Rab.) Grun. = Luticola goeppertiana (Bleisch ex Rab.)
    D. Mann
    KS: Curtis (1901)
Navicula mutica var. stigma Patr. = Luticola stigma (Patr.) comb. nov.?
    OK: Pfiester et al. (1979)
Navicula mutica var. tropica Hust. = Luticolatropica (Hust.) comb. nov.?
    OK: Pfiester et al. (1979)
Navicula mutica var. undulata (Hilse) Grun. = Luticola undulata (Hilse) D. Mann
    OK: Pfiester et al. (1979), Troeger (1983)
Navicula mutica var. ventricosa (Kütz.) Cl. = Luticola ventricosa (Kütz.) D. Mann
    OK: Troeger (1978)
Navicula nobilis (Ehr.) Kütz. = Pinnularia nobilis (Ehr.) Ehr.
    NE: Elmore (1921)
Navicula nodosa Ehr. = Pinnularia nodosa (Ehr.) W. Sm.
    NE: Elmore (1921)
Navicula notha Wall.
    KS: Wujek et al. (1980)
    OK: Koch (1975), Troeger (1983)
Navicula oblonga (Kütz.) Kütz.
    KS: Curtis (1901)
    NE: Andersen & Walker (1920), Elmore (1921)
    Plains States: Patrick & Reimer (1966)
Navicula obtusa Ehr. = Pinnularia appendiculata (Ag.) Cl.
    OK: Ehrenberg (1856)
Navicula obtusata W. Sm. = ?Caloneis hebes (Ralfs) Patr.
    KS: Curtis (1901)
Navicula oculata Bréb. = Diploneis oculata (Bréb.) Cl.
    KS: Curtis (1901)
Navicula odiosa Wall.
    OK: Pfiester et al. (1979)
Navicula palpebralis Bréb. ex W. Sm.
    NE: Elmore (1921), Patrick & Reimer (1966)
Navicula parva (Ehr.) Elm. = Pinnularia stauroptera (Grun.) Rab.
    NE: Elmore (1921)
Navicula paucivisitata Patr.
    KS: Wujek et al. (1980)
    OK: Troeger (1983)
Navicula pelliculosa (Bréb. ex Kütz.) Hilse
    KS: Powers (1969)
    OK: Koch & Risser (1974), Seyfer & Wilhm (1977), Wilhm et al. (1978)
    Plains States: Patrick & Reimer (1966)
Navicula peregrina (Ehr.) Kütz.
    KS: Curtis (1901), Harris & Eberle (2001), Wenke & Eberle (1986), Wujek et al. (1980)
    NE: Elmore (1921)
    OK: Kennedy & Pfiester (1984)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Pinnularia peregrina Ehr.
Navicula phyllodes (Ehr.) Ehr. = Stauroneis phyllodes Ehr.
    OK: Ehrenberg (1856)
Navicula placentula (Ehr.) Kütz. = Placoneis placentula (Ehr.) Heinz.
    NE: Elmore (1921)
    OK: Pfiester et al. (1979)
    Plains States: Patrick & Reimer (1966)
Navicula placentula f. rostrata A. Mayer = Placoneis placentula var. rostrata (A. Mayer) 
    And., Stoerm., & Kreis?
    OK: Koch & Risser (1974)
Navicula producta W. Sm. = Neidium productum (W. Sm.) Cl.
    KS: Curtis (1901)
    NE: Webber (1889)
Navicula protracta Grun.
    KS: Czarnecki & Reinke (1981)
    OK: Troeger (1983)
Navicula pseudobacillum Grun. = Sellaphora bacillum (Ehr.) D. Mann
    KS: Curtis (1901)
Navicula pseudoreinhardtii Patr.
    OK: Pfiester et al. (1979)
Navicula pumila Grun. = Navicula cryptocephala var. veneta (Kütz.) Rab.
    KS: Curtis (1901)
Navicula pupula Kütz. = Sellaphora pupula (Kütz.) Meresch.
    KS: Boyer (1927b), ?Curtis (1901), Powers (1969)
    MO: Pamperl (1980)
    NE: Andersen & Walker (1920), Elmore (1921), Hoagland et al. (1982), Roemer et al. (1984)
    OK: Pfiester et al. (1979), Seyfer & Wilhm (1977), Troeger (1978, 1983), Troeger & Menzel (1986), 
          Wilhm et al. (1977), Wilhm et al. (1978)
    Plains States: Patrick & Reimer (1966)
Navicula pupula f. minutula Choln. = Sellaphora pupula f. minutula (Choln.) comb. nov.?
    KS: Powers (1969)
Navicula pupula var. capitata Skv. & Meyer = Sellaphora pupula var. capitata (Skv. & Meyer)
    comb. nov.?
    KS: Wenke & Eberle (1986), Wujek et al. (1980)
    OK: Koch & Risser (1974), Troeger (1983)
    Plains States: Patrick & Reimer (1966)
Navicula pupula var. elliptica Hust. = Sellaphora pupula var. elliptica (Hust.) comb. nov.?
    MO: Pamperl (1980)
    NE: Patrick & Reimer (1966)
    OK: Troeger (1978)
Navicula pupula var. mutata (Krasske) Hust. = Sellaphora pupula var. mutata (Krasske) 
    comb. nov.?
    MO: Pamperl (1980)
Navicula pupula var. rectangularis (Greg.) Grun. = Sellaphora pupula var. rectangularis (Greg.)
    comb. nov.?
    KS: Wujek et al. (1980)
    MO: Pamperl (1980)
    NE: Patrick & Reimer (1966)
    OK: Koch & Risser (1974), Troeger (1978)
Navicula pygmaea Kütz. = Fallacia pygmaea (Kütz.) Stickle & D. Mann
    KS: Powers (1969), Wenke & Eberle (1986), Wujek et al. (1980)
    NE: Elmore (1921)
    OK: Hern et al. (1979), Koch (1975), Seyfer & Wilhm (1977), Wilhm et al. (1977), Wilhm et al. (1978)
    Plains States: Patrick & Reimer (1966)
Navicula radians = ?
    KS: Curtis (1901) [see Eberle (1982:89)]
Navicula radiosa Kütz.
    KS: Curtis (1901), Elmore (1921), Wujek et al. (1980)
    NE: Andersen & Walker (1920), Elmore (1921), Hoagland et al. (1982), F.A. Morris et al. (1979)
    OK: Pfiester et al. (1979), Troeger (1978, 1983), Troeger & Menzel (1986)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula radiosa var. acuta (W. Sm.) Grun.
Navicula radiosa var. acuta (W. Sm.) Grun. = Navicula radiosa Kütz.
    KS: Curtis (1901)
Navicula radiosa var. parva Wall.
    NE: Hoagland et al. (1982)
Navicula radiosa var. tenella (Bréb. ex Kütz.) Grun.
    KS: Wujek et al. (1980)
    MO: Pamperl (1980)
    NE: Hoagland et al. (1982), Roemer et al. (1984)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula tenella Bréb. ex Kütz.
Navicula rangoonensis (Grun.) Elm. = Pinnularia abaujensis var. linearis (Hust.) Patr.
    NE: Elmore (1921)
Navicula reinhardtii (Grun.) Grun.
    NE: Elmore (1921)
    Plains States: Patrick & Reimer (1966)
Navicula retusa Bréb. = Navicula cancellata var. retusa (Bréb.) Cl.
    KS: Curtis (1901)
Navicula rhomboides var. ? (Colletonema vulgare Thw.) = Frustulia vulgaris (Thw.) DeT.
    KS: Curtis (1901)
Navicula rhyncocephala Kütz.
    KS: Branson (1966), Curtis (1901), Wujek (1965)
    MO: Pamperl (1980)
    NE: Elmore (1921), Hoagland et al. (1982)
    OK: Koch & Risser (1974), Pfiester et al. (1979), Wilhm et al. (1977)
    Plains States: Patrick & Reimer (1966)
Navicula rhyncocephala var. amphiceros (Kütz.) Grun.
    KS: Patrick & Reimer (1966)
        Synonyms:
            Navicula amphiceros Kütz.
Navicula rhyncocephala var. germainii (Wall.) Patr.
    NE: Hoagland et al. (1982)
    OK: Troeger (1978)
Navicula rostellata Kütz. = Navicula viridula var. rostellata (?Kütz.) Cl.
    KS: Curtis (1901)
Navicula rostrata Ehrenb. = Anomoeoneis sphaerophora var. sculpta O. Müll.
    NE: Elmore (1921)
Navicula rupestris (Hantz.) A.S. = Pinnularia rupestris Hantz.
    KS: Curtis (1901)
Navicula sabiniana Patr.
    OK: Pfiester et al. (1979), Troeger (1978, 1983), Troeger & Menzel (1986)
Navicula salinarum Grun.
    KS: Czarnecki & Reinke (1981)
    MO: M.K. Morris et al. (1979a)
    NE: Elmore (1921)
    OK: Koch (1975), Koch & Risser (1974), Seyfer & Wilhm (1977), Wilhm et al. (1977)
    Plains States: Patrick & Reimer (1966)
Navicula salinarum var. intermedia (Grun.) Cl. = Navicula capitatoradiata Germain ex Gasse
    KS: Wenke & Eberle (1986), Williams et al. (1979), Wujek et al. (1980)
    NE: Hoagland et al. (1982), Roemer et al. (1984)
    OK: Koch & Risser (1974), Troeger (1978)
    Plains States: Patrick & Reimer (1966)
Navicula santaecrucis Østr.
    OK: Koch (1975)
Navicula scalprum Gaillon = Gyrosigma attenuatum var. scalprum (Gaillon) Ralfs
    OK: Ehrenberg (1856)
Navicula schoenfeldii Hust.
    OK: Troeger (1978)
Navicula schroeteri var. escambia Patr.
    NE: Hoagland et al. (1982)
Navicula schumanniana Grun. = Caloneis limosa (Kütz.) Patr.
    KS: Curtis (1901)
Navicula sculpta Ehr. = Anomoeoneis sphaerophora var. sculpta O. Müll.
    NE: Andersen & Walker (1920)
Navicula scutum Schum.
    NE: Elmore (1921)
Navicula secreta Patr.
    OK: Wilhm et al. (1977)
Navicula secreta var. apiculata Patr.
    KS: ?Harris & Eberle (2001)
    OK: Koch & Risser (1974)
Navicula secura Patr.
    OK: Koch & Risser (1974)
Navicula semen Ehr. emend Donk.
    Plains States: Patrick & Reimer (1966)
Navicula seminulum Grun. = Sellaphora seminulum (Grun.) D. Mann
    OK: Wilhm et al. (1978)
Navicula seminulum var. hustedtii Patr. = Sellaphora seminulum var. hustedtii (Patr.) comb. nov.?
    OK: Pfiester et al. (1979), Troeger (1978)
Navicula serians Bréb. ex Kütz. = Brachysira serians (Bréb. ex Kütz.) Round & Mann
    NE: Elmore (1921), Webber (1890)
Navicula sigma Ehr. = ?
    OK: Ehrenberg (1856)
Navicula silicula Ehr. = Caloneis ventricosa (Ehr.) Meist.
    NE: Ehrenberg (1856), Elmore (1921)
    OK: Ehrenberg (1856)
Navicula simplex Krasske
    NE: Hoagland et al. (1982)
Navicula smithii Bréb. ex W. Sm. = Diploneis smithii (Bréb. ex W. Sm.) Cl.
    KS: ?Curtis (1901)
Navicula sphaerophora Ehr. = Anomoeoneis sphaerophora (Kütz.) Pfitz.
    KS: Curtis (1901), Wolle (1889)
    NE: Andersen & Walker (1920), Elmore (1921), Webber (1890)
Navicula spicula (Hicke) Cl. = Stauroneis spicula (Hicke) Grun.
    KS: Czarnecki & Reinke (1981) [as both names], Wenke & Eberle (1986) [as both names]
    OK: Koch (1975)
Navicula stauroneiformis Elm. = Pinnularia aestuarii Cl.
    KS: Curtis (1901)
    NE: Elmore (1921)
Navicula stauroparva Grun. = Pinnularia parvula (Ralfs) Cl.-Eul.
    KS: Curtis (1901)
Navicula stauroptera Grun. = Pinnularia stauroptera (Grun.) Rab.
    KS: Curtis (1901)
    NE: Andersen & Walker (1920)
Navicula stauroptera var. parva Grun. = Pinnularia parvula (Ralfs) Cl.-Eul.
    KS: Curtis (1901)
Navicula stomatophora Grun. = Pinnularia stomatophora (Grun.) Cl.
    KS: Curtis (1901)
Navicula subcapitata (Greg.) Ralfs = Pinnularia subcapitata Greg.
    NE: Andersen & Walker (1920), Elmore (1921)
Navicula subcapitata var. stauroneiformis V.H. = Pinnularia subcapitata Greg.
    KS: Curtis (1901)
Navicula subfasciata Patr. [also as N. subfasciculata]
    OK: Koch & Risser (1974), Troeger (1978, 1983)
Navicula subhamulata Grun. = Fallacia subhamulata (Grun.) D. Mann
    MO: Pamperl (1980)
Navicula subinflata Grun.
    KS: Curtis (1901)
Navicula subtilissima Cl.
    OK: Koch & Risser (1974), Pfiester et al. (1979)
Navicula symmetrica Patr.
    KS: Powers (1969)
    MO: Pamperl (1980)
    NE: Hoagland et al. (1982)
    OK: Koch (1975), Pfiester et al. (1979)
    Plains States: Patrick & Reimer (1966)
Navicula tabellaria = Pinnularia?
    KS: Curtis (1901) [see Eberle (1982:116) and Patrick and Reimer (1966:613 & 626)]
Navicula tantula Hust.
    KS: Powers (1969)
Navicula tenella Bréb. ex Kütz. = Navicula radiosa var. tenella (Bréb. ex Kütz.) Grun.
    KS: Curtis (1901)
Navicula tenera Hust. = Fallacia tenera (Hust.) D. Mann
    KS: Wujek et al. (1980)
    NE: Hoagland et al. (1982)
    OK: Seyfer & Wilhm (1977), Troeger (1978)
Navicula tenelloides Hust.
    Plains States: Patrick & Reimer (1966)
Navicula texana Patr.
    OK: Koch & Risser (1974)
Navicula thermes (Ehr.) A.S. = Pinnularia termes Ehr.
    NE: Elmore (1921)
Navicula tridentula Krasske
    OK: Troeger (1978)
Navicula trinodis Lewis = Caloneis lewisii Patr.
    KS: Curtis (1901), Elmore (1921)
    NE: Elmore (1921)
Navicula tripunctata (O. Müll.) Bory
    KS: Wujek et al. (1980)
    NE: Hoagland et al. (1982), Roemer et al. (1984), Williams (1962), WPSS (1966)
    OK: Koch (1975), Koch & Risser (1974), Pfiester et al. (1979), Seyfer & Wilhm (1977), Troeger (1978),
Wilhm et al. (1977)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula gracilis Ehr.
Navicula tripunctata var. schizonemoides (V.H.) Patr.
    KS: Powers (1969)
    MO: Pamperl (1980)
    OK: Koch (1975)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula gracilis var. schizonemoides V.H.
Navicula tuscula Ehr. = Aneumastus tuscula (Ehr.) D. Mann & Stickle
    KS: Curtis (1901)
    Plains States: Patrick & Reimer (1966)
Navicula undulata = ?
    KS: Curtis (1901) [see Eberle (1982:137)]
Navicula variostriata Krasske = Cavinula variostriata (Krasske) D. Mann
    OK: Troeger (1983)
Navicula vaucheriae Peters.
    KS: Powers (1969)
Navicula vaucheriae var. densistriata Lund = Navicula excelsa Krasske
    KS: Powers (1969)
Navicula veneta Kütz. = Navicula cryptocephala var. veneta (Kütz.) Rab.
    KS: Curtis (1901)
Navicula ventricosa Ehr. = Caloneis ventricosa (Ehr.) Meist.
    NE: Elmore (1921)
Navicula ventricosa f. minuta Grun. = Caloneis ventricosa var. minuta (Grun.) Patr.
    KS: Curtis (1901)
Navicula viridis (Nitz.) Ehrenb. = Pinnularia viridis (Nitz.) Ehrenb.
    KS: Wolle (1889)
    NE: Andersen & Walker (1920), Elmore (1921), Webber (1890)
Navicula viridis (Nitz.) Ehr. sensu A.S. = Pinnularia viridis var. minor Cl.
    KS: Curtis (1901) [see Eberle (1982:112-113)]
Navicula viridula (Kütz.) Kütz. emend V.H.
    CO: Williams (1964)
    KS: Wujek (1965)
    OK: Koch & Risser (1974), Pfiester et al. (1979), Troeger (1983), Wilhm et al. (1977)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula viridula f. minor
Navicula viridula f. minor = Navicula viridula (Kütz.) Kütz. emend V.H.?
    KS: Curtis (1901) [see Eberle (1982:89)]
Navicula viridula var. argunensis Skv.
    KS: Powers (1969)
Navicula viridula var. avenacea (Bréb. ex Grun.) V.H.
    KS: Czarnecki & Reinke (1981), Wenke & Eberle (1986)
    NE: Patrick & Reimer (1966)
Navicula viridula var. linearis Hust.
    KS: Powers (1969)
    MO: Pamperl (1980)
    OK: Pfiester & Terry (1978)
    Plains States: Patrick & Reimer (1966)
Navicula viridula var. rostellata (?Kütz.) Cl.
    KS: Wenke & Eberle (1985, 1986)
    NE: Patrick & Reimer (1966)
    OK: Troeger (1983)
    Plains States: Patrick & Reimer (1966)
        Synonyms:
            Navicula rostellata Kütz.
Navicula viridula var. rostrata Skv.
    KS: Powers (1969)
Navicula vitabunda Hust. = Sellaphora vitabunda (Hust.) D. Mann
    OK: Troeger (1978)
Navicula vulpina Kütz.
    NE: Hoagland et al. (1982)
    OK: Pfiester et al. (1979)

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