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Name Nomenclatural Novelty
Pleurosigma abruptum
    Pleurosigma abruptum H. Peragallo 1891
Name Nomenclatural Novelty
Pleurosigma acuminatum
    Pleurosigma acuminatum (Kützing) Grunow 1860
Name Nomenclatural Novelty
Pleurosigma acuminatum
    Pleurosigma acuminatum (Kützing) W. Smith 1852
Name Nomenclatural Novelty
Pleurosigma acuminatum
    Pleurosigma acuminatum sensu W. Smith 1853
Name Nomenclatural Novelty
Pleurosigma acuminatum f. curta
    Pleurosigma acuminatum f. curta (Grunow in Cleve & Grunow) Dorogostaisky 1904
Name Nomenclatural Novelty
Pleurosigma acuminatum f. cuspidatum
    Pleurosigma acuminatum f. cuspidatum
Name Nomenclatural Novelty
Pleurosigma acuminatum f. minor
    Pleurosigma acuminatum f. minor Rabenhorst 1864
Name Nomenclatural Novelty
Pleurosigma acuminatum f. obtusa
    Pleurosigma acuminatum f. obtusa Dippel 1905
Name Nomenclatural Novelty
Pleurosigma acuminatum var. brebissonii
    Pleurosigma acuminatum var. brebissonii (Grunow in Cleve & Grunow) Van Heurck 1885
Name Nomenclatural Novelty
Pleurosigma acuminatum var. curta
    Pleurosigma acuminatum var. curta Grunow in Cleve & Grunow 1880
Name Nomenclatural Novelty
Pleurosigma acuminatum var. curta
    Pleurosigma acuminatum var. curta M. Peragallo in Héribaud 1893
Name Nomenclatural Novelty
Pleurosigma acuminatum var. cuspidatum
    Pleurosigma acuminatum var. cuspidatum (Rabenhorst) Rabenhorst 1864
Name Nomenclatural Novelty
Pleurosigma acuminatum var. cuspidatum
    Pleurosigma acuminatum var. cuspidatum Fresen. ex Rabenhorst 1864
Name Nomenclatural Novelty
Pleurosigma acuminatum var. gallica
    Pleurosigma acuminatum var. gallica (Grunow in Van Heurck) H. Peragallo & M. Peragallo 1898
Name Nomenclatural Novelty
Pleurosigma acuminatum var. lacustre
    Pleurosigma acuminatum var. lacustre (Smith) Rabenhorst 1864
Name Nomenclatural Novelty
Pleurosigma acuminatum var. lacustre
    Pleurosigma acuminatum var. lacustre (W. Smith) M. Peragallo 1903
Name Nomenclatural Novelty
Pleurosigma acuminatum var. neglectum
    Pleurosigma acuminatum var. neglectum (McCall) F.W. Mills 1934
Name Nomenclatural Novelty
Pleurosigma acuminatum var. obtusa
    Pleurosigma acuminatum var. obtusa Dippel 1905
Name Nomenclatural Novelty
Pleurosigma acuminatum var. scalproides
    Pleurosigma acuminatum var. scalproides Brun 1880
Name Nomenclatural Novelty
Pleurosigma acuminatum var. scalproides
    Pleurosigma acuminatum var. scalproides Rabenhorst ex Héribaud 1893
Name Nomenclatural Novelty
Pleurosigma acus vcard
    Pleurosigma acus Mann 1925     
Name Nomenclatural Novelty
Pleurosigma acus
    Pleurosigma acus Mann 1925
Name Nomenclatural Novelty
Pleurosigma acutum
    Pleurosigma acutum Norman 1860
Name Nomenclatural Novelty
Pleurosigma acutum
    Pleurosigma acutum Norman ex Ralfs in Pritchard 1861
Name Nomenclatural Novelty
Pleurosigma acutum f. brasiliana
    Pleurosigma acutum f. brasiliana Müller-Melchers 1955
Name Nomenclatural Novelty
Pleurosigma acutum var. australicum
    Pleurosigma acutum var. australicum (australasica) Grunow in Cleve & Möller 1882
Name Nomenclatural Novelty
Pleurosigma acutum var. japonicum
    Pleurosigma acutum var. japonicum H. Peragallo 1891
Name Nomenclatural Novelty
Pleurosigma acutum var. latum new variety
    Pleurosigma acutum var. latum Chin et Liu 1979          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma acutum var. pelagicum
    Pleurosigma acutum var. pelagicum H. Peragallo manus. ex H. Peragallo 1891
Name Nomenclatural Novelty
Pleurosigma aequatoiale
    Pleurosigma aequatoiale Cleve in Cleve & Moller 1878
Name Nomenclatural Novelty
Pleurosigma aestuarii
    Pleurosigma aestuarii (aestuarium) (Brébisson in Kützing) W. Smith 1853
Name Nomenclatural Novelty
Pleurosigma aestuarii var. candida
    Pleurosigma aestuarii (aestuarium) var. candida (Schumann) H. Peragallo 1891
Name Nomenclatural Novelty
Pleurosigma aestuarii var. delicata new variety
    Pleurosigma aestuarii var. delicata Meister 1932          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma aestuarii var. intermedia
    Pleurosigma aestuarii (aestuarium) var. intermedia Grunow 1867
Name Nomenclatural Novelty
Pleurosigma aestuarii var. lanceolata
    Pleurosigma aestuarii (aestuarium) var. lanceolata Wislouch 1924
Name Nomenclatural Novelty
Pleurosigma aestuarii var. minuta
    Pleurosigma aestuarii (aestuarium) var. minuta (minutum, minuata) (Grunow in Cleve & Möller) Grunow in Cleve & Grunow 1880
Name Nomenclatural Novelty
Pleurosigma affine
    Pleurosigma affine Grunow 1880
Name Nomenclatural Novelty
Pleurosigma affine
    Pleurosigma affine Grunow in Cleve & Möller 1879
Name Nomenclatural Novelty
Pleurosigma affine f. major
    Pleurosigma affine f. major Tempčre & Peragallo 1911
Name Nomenclatural Novelty
Pleurosigma affine var. fossilis
    Pleurosigma affine var. fossilis Grunow in Cleve & Grunow 1880
Name Nomenclatural Novelty
Pleurosigma affine var. interruptum
    Pleurosigma affine var. interruptum H. Peragallo 1891
Name Nomenclatural Novelty
Pleurosigma affine var. major
    Pleurosigma affine var. major Tempčre & Peragallo 1911
Name Nomenclatural Novelty
Pleurosigma affine var. marylandica
    Pleurosigma affine var. marylandica Grunow in Cleve & Grunow 1880
Name Nomenclatural Novelty
Pleurosigma affine var. moronensis
    Pleurosigma affine var. moronensis Tempčre & Peragallo 1913
Name Nomenclatural Novelty
Pleurosigma affine var. nicobarica
    Pleurosigma affine var. nicobarica Grunow in Van Heurck 1885
Name Nomenclatural Novelty
Pleurosigma affine var. normanni
    Pleurosigma affine var. normanni (Ralfs in Pritchard) H. Peragallo 1891
Name Nomenclatural Novelty
Pleurosigma affine var. temperei new variety
    Pleurosigma affine var. temperei J. Frenguelli 1949          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma agellus
    Pleurosigma agellus Ralfs
Name Nomenclatural Novelty
Pleurosigma akbecula
    Pleurosigma akbecula Derjugin 1928
Name Nomenclatural Novelty
Pleurosigma amara new species
    Pleurosigma amara Stidolph 1992          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma ambrosianum Sterrenberg, Tiffany & Lange new species
    Pleurosigma ambrosianum Sterrenberg, Tiffany & Lange     
Name Nomenclatural Novelty
Pleurosigma americanum
    Pleurosigma americanum (H. Peragallo) Boyer 1927
Name Nomenclatural Novelty
Pleurosigma angulare
    Pleurosigma angulare Cleve
Name Nomenclatural Novelty
Pleurosigma angulatum
    Pleurosigma angulatum (Quekett) W. Smith 1852
Name Nomenclatural Novelty
Pleurosigma angulatum
    Pleurosigma angulatum W. Smith 1852
Name Nomenclatural Novelty
Pleurosigma angulatum emended description
    Pleurosigma angulatum W. Smith emend. Sterrenburg 1991          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma angulatum f. chemburiana new form
    Pleurosigma angulatum f. chemburiana Gonzalves & Gandhi 1953          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma angulatum f. fallax
    Pleurosigma angulatum f. fallax (Grunow in Cleve & Grunow) De Toni 1891
Name Nomenclatural Novelty
Pleurosigma angulatum f. finmarchicum
    Pleurosigma angulatum f. finmarchicum Meyer 1938
Name Nomenclatural Novelty
Pleurosigma angulatum f. gracile
    Pleurosigma angulatum f. gracile (Grunow) De Toni 1891
Name Nomenclatural Novelty
Pleurosigma angulatum f. hyalinum
    Pleurosigma angulatum f. hyalinum (Grunow) De Toni 1891
Name Nomenclatural Novelty
Pleurosigma angulatum f. intermedium
    Pleurosigma angulatum f. intermedium (Grunow) De Toni 1891
Name Nomenclatural Novelty
Pleurosigma angulatum f. javanicum
    Pleurosigma angulatum f. javanicum De Toni
Name Nomenclatural Novelty
Pleurosigma angulatum f. karianum
    Pleurosigma angulatum f. karianum (Grunow in Cleve & Grunow) De Toni 1891
Name Nomenclatural Novelty
Pleurosigma angulatum f. major
    Pleurosigma angulatum f. major Grunow in Van Heurck 1880
Name Nomenclatural Novelty
Pleurosigma angulatum f. major
    Pleurosigma angulatum f. major Truan y Luard 1884
Name Nomenclatural Novelty
Pleurosigma angulatum f. minor
    Pleurosigma angulatum f. minor Cleve & Möller 1878
Name Nomenclatural Novelty
Pleurosigma angulatum f. minor
    Pleurosigma angulatum f. minor Rabenhorst 1864
Name Nomenclatural Novelty
Pleurosigma angulatum f. minutum
    Pleurosigma angulatum f. minutum (Grunow in Cleve & Moller; Grunow in Cleve & Grunow) De Toni 1891
Name Nomenclatural Novelty
Pleurosigma angulatum f. salinarum
    Pleurosigma angulatum f. salinarum (Grunow) De Toni 1891
Name Nomenclatural Novelty
Pleurosigma angulatum f. undulatum
    Pleurosigma angulatum f. undulatum (Grunow in Cleve & Grunow) Cleve 1894
Name Nomenclatural Novelty
Pleurosigma angulatum var. aestuarii
    Pleurosigma angulatum var. aestuarii (Brebisson in Kutzing) Van Heurck 1885
Name Nomenclatural Novelty
Pleurosigma angulatum var. aestuarii
    Pleurosigma angulatum var. aestuarii Meunier 1915
Name Nomenclatural Novelty
Pleurosigma angulatum var. beta
    Pleurosigma angulatum var. beta W. Smith 1852
Name Nomenclatural Novelty
Pleurosigma angulatum var. convexum
    Pleurosigma angulatum var. convexum (Grunow in Cleve & Grunow) Cleve 1894
Name Nomenclatural Novelty
Pleurosigma angulatum var. delicatulum
    Pleurosigma angulatum var. delicatulum (W. Smith) Van Heurck 1885
Name Nomenclatural Novelty
Pleurosigma angulatum var. elongatum
    Pleurosigma angulatum var. elongatum (W. Smith) Van Heurck 1885
Name Nomenclatural Novelty
Pleurosigma angulatum var. falcatum new variety
    Pleurosigma angulatum var. falcatum Liu et Chin 1980          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma angulatum var. fallax
    Pleurosigma angulatum var. fallax (Grunow in Cleve & Grunow) De Toni 1891
Name Nomenclatural Novelty
Pleurosigma angulatum var. finmarchia
    Pleurosigma angulatum var. finmarchia (Cleve) Cleve 1894
Name Nomenclatural Novelty
Pleurosigma angulatum var. finmarchica
    Pleurosigma angulatum var. finmarchica (Cleve in Cleve & Moller; Cleve ex Grunow) H. Peragallo 1891
Name Nomenclatural Novelty
Pleurosigma angulatum var. gamma
    Pleurosigma angulatum var. gamma W. Smith 1852
Name Nomenclatural Novelty
Pleurosigma angulatum var. genuinum new name
    Pleurosigma angulatum var. genuinum Cl.-Eul. 1952          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma angulatum var. javanicum
    Pleurosigma angulatum var. javanicum Grunow in Cleve & Möller 1878
Name Nomenclatural Novelty
Pleurosigma angulatum var. major
    Pleurosigma angulatum var. major (Grunow in Van Heurck) Van Heurck 1896
Name Nomenclatural Novelty
Pleurosigma angulatum var. minutum
    Pleurosigma angulatum var. minutum (Grunow in Cleve & Moller; Grunow in Cleve & Grunow) McCall 1933
Name Nomenclatural Novelty
Pleurosigma angulatum var. quadratum
    Pleurosigma angulatum var. quadratum (W. Smith) Van Heurck 1885
Name Nomenclatural Novelty
Pleurosigma angulatum var. quadratum
    Pleurosigma angulatum var. quadratum Meunier 1910
Name Nomenclatural Novelty
Pleurosigma angulatum var. robustum new variety
    Pleurosigma angulatum var. robustum McCall 1933          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma angulatum var. strigosa
    Pleurosigma angulatum var. strigosa (strigosum) (W. Smith) Van Heurck 1885
Name Nomenclatural Novelty
Pleurosigma angulatum var. thuringicum
    Pleurosigma angulatum var. thuringicum (Kützing) Schonfeldt 1907
Name Nomenclatural Novelty
Pleurosigma angulatum var. undulata
    Pleurosigma angulatum var. undulata Grunow in Cleve & Grunow 1880
Name Nomenclatural Novelty
Pleurosigma angusticonvexum new species
    Pleurosigma angusti-convexum Hagelstein 1939          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma angustum
    Pleurosigma angustum Donkin 1858
Name Nomenclatural Novelty
Pleurosigma antarcticum
    Pleurosigma antarcticum Grunow in Cleve & Möller 1878
Name Nomenclatural Novelty
Pleurosigma antarcticum lectotype
    Pleurosigma antarcticum Heiden in Heiden & Kolbe 1928          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma antarcticum var. angusta lectotype, paralectotype
    Pleurosigma antarcticum var. angusta Heiden in Heiden & Kolbe 1928          [Link to DiatomBase]
Name Nomenclatural Novelty
Pleurosigma antillarum
    Pleurosigma antillarum H. Peragallo 1891
Name Nomenclatural Novelty
Pleurosigma apulum
    Pleurosigma apulum (Rabenhorst) Ralfs in Pritchard 1861
Name Nomenclatural Novelty
Pleurosigma arafurense
    Pleurosigma arafurense Castracane 1886
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