| Name | Author | Source | Citation | Year |
|---|
| NEIDIUM | Pfitzer | image |
| Neidium acutum | Z. Levkov & S. Krstic in Levkov, Krstic, Metzeltin & Nakov | Icon. Diatomol. | 16: 105, pl. 116: figs. 1-7 | 2007 |
| Neidium affine | (Ehrenberg) Pfitzer | image |
| Neidium affine f. angustius_('angustior') | A. Mayer | Ber. Naturwiss. Ver. Regensburg | 17: 54, pl. I: fig. 10 | 1925 |
| Neidium affine f. biglobosum_('biglobosa') | Cleve-Euler | image |
| Neidium affine f. breve_('brevis') | Mayer | image |
| Neidium affine f. capitatum_('capitata') | Skvortzov & Meyer | image |
| Neidium affine f. ceylonicum_('ceylonica') | Skvortzov | image |
| Neidium affine f. constrictum_('constricta') | Cleve-Euler | image |
| Neidium affine f. constrictum_('constricta') | Krasske | image |
| Neidium affine f. hankense_('hankensis') | Skvortzov | image |
| Neidium affine f. hankense_('hankensis') | Skvortzov | image |
| Neidium affine f. hankense_('hankensis') | Skvortzov | image |
| Neidium affine f. hercynicum | (A. Mayer) Hustedt in Pascher, | Süssw.-Fl. | 10, 2.Aufl.: 243 | 1930 |
| Neidium affine f. incurvum | (Gregory) Foged | image |
| Neidium affine f. koreanum_('koreana') | (Skvortzov) Skvortzov & Noda | image |
| Neidium affine f. koreanum_('koreana') | Skvortzov | image |
| Neidium affine f. latius_('latior') | A. Mayer | Ber. Naturwiss. Ver. Regensburg | 17: 54, pl. I: figs. 7-9 | 1925 |
| Neidium affine f. majus_('major') | Cleve | image |
| Neidium affine f. manschuricum_('manschurica') | Skvortzov | image |
| Neidium affine f. maximum_('maxima') | Cleve | image |
| Neidium affine f. medium_('media') | Cleve | image |
| Neidium affine f. medium_('media') | Cleve-Euler | image |
| Neidium affine f. minus_('minor') | Caballero y Villaldea | image |
| Neidium affine f. minus_('minor') | Cleve | image |
| Neidium affine f. minus_('minor') | Cleve | image |
| Neidium affine f. tenuirostre_('tenuirostris') | (A. Mayer) Hustedt in Pascher, | Süssw.-Fl. | 10, 2.Aufl.: 243 | 1930 |
| Neidium affine f. truncatulum_('truncatula') | Gonzalves & Gandhi | image |
| Neidium affine f. undulatum_('undulata') | (Grunow) Hustedt | image |
| Neidium affine f. undulatum_('undulata') | Hustedt | image |
| Neidium affine subf. subrostratum | A. Mayer | Ber. Naturwiss. Ver. Regensburg | 17: 54, pl. I: fig. 4 | 1925 |
| Neidium affine var. amphirhynchus | (Ehrenberg) Cleve | image |
| Neidium affine var. bonsaense_('bonsaensis') | Foged | image |
| Neidium affine var. capitatum | Molder ex R. Ross | image |
| Neidium affine var. capitatum_('capitata') | K. Mölder | image |
| Neidium affine var. ceylonicum_('ceylonica') | Reimer | image |
| Neidium affine var. constrictum | Messikommer | image |
| Neidium affine var. constrictum | Messikommer | image |
| Neidium affine var. constrictum_('constricta') | Frenguelli | image |
| Neidium affine var. dippelii | Cleve-Euler | image |
| Neidium affine var. dubium_('dubia') | (Ehrenberg) Frenguelli | image |
| Neidium affine var. elegans | Mayer | image |
| Neidium affine var. genuinum_('genuina') | Cleve | image |
| Neidium affine var. globiceps | Cleve-Euler | image |
| Neidium affine var. hankense_('hankensis') | (Skvortzov) Reimer | image |
| Neidium affine var. humere_('humeris') | Reimer | image |
| Neidium affine var. humerus | Reimer in Patrick & Reimer | Monogr. Acad. Nat. Sci. Philadelphia | 13: 392, pl. 35: fig. 5 | 1966 |
| Neidium affine var. lineare_('linearis') | Foged | image |
| Neidium affine var. longiceps | (Gregory) Cleve | image |
| Neidium affine var. lucinense_('lucinensis') | Hustedt | Archiv für Hydrobiologie | 43: 356, pl. XLI: fig. 52 | 1950 |
| Neidium affine var. ranomafanense_('ranomafanensis') | Manguin | image |
| Neidium affine var. rhodanum_('rhodana') | Brun | image |
| Neidium affine var. rhodanum_('rhodana') | J. Brun | Diatomiste | 2: pl. XIV: figs. 8-10 | 1895 |
| Neidium affine var. subrostratum | A. Mayer | Denkschr. K. Bayer. Bot. Ges. | 13: 135, pl. II: fig. 7 | 1917 |
| Neidium affine var. tenuirostre_('tenuirostris') | A. Mayer | Denkschr. K. Bayer. Bot. Ges. | 13: 135, pl. II: figs. 8,9 | 1917 |
| Neidium affine var. undulatum_('undulata') | (Grunow) Cleve | image |
| Neidium agonaense | Foged | image |
| Neidium alaskaense | Foged | image |
| Neidium alpinum | Hustedt | image |
| Neidium alpinum var. quadripunctatum | (Hustedt) Hemilton | image |
| Neidium alpinum var. quadripunctatum | (Hustedt) P.B. Hamilton in P.B. Hamilton, M. Poulin, & M.C. Taylor | Diatom Res. | 5: 290 | 1990 |
| Neidium amphiatlanticum | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 168, pl. 187: figs. 2-4 | 2007 |
| Neidium amphigomphoides | A. Mayer | Ber. Naturwiss. Ver. Regensburg | 17: 61, pl. III: figs. 2,3 | 1925 |
| Neidium amphigomphus | (Ehrenberg) Pfitzer | image |
| Neidium amphigomphus f. curtum_('curta') | Wislouch & Poretzky in Poretzky | Trudy Leningradskago Obschchestva Estestvoispytatelei | 53(3): 146, no fig. | 1924 |
| Neidium amphigomphus var. intermedium | McCall | image |
| Neidium amphirhynchus | (Ehrenberg) Pfitzer | image |
| Neidium amphirhynchus | (Ehrenberg) Schaarschmidt | image |
| Neidium amphirhynchus var. majus | (Cleve) Meister | image |
| Neidium amphirhynchus var. minus | (Cleve) Meister | image |
| Neidium amphirhynchus var. undulatum | (Grunow) Meister | image |
| Neidium ampliatum | (Ehrenberg) Krammer | image |
| Neidium andinum | H. Lange-Bertalot in U. Rumrich, H. Lange-Bertalot, & M. Rumrich | Iconogr. Diatomol. | 9: 180, pl. 102: figs. 5-7 | 2000 |
| Neidium angustatum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 11, figs. 69-74, 80-84 | 2017 |
| Neidium angustirostratum | H. Lange-Bertalot, P. Cavacini, N. Tagliaventi & S. Alfinito | Iconogr. Diatomol. | 12: 85, pl. 75: figs. 12-17 | 2003 |
| Neidium anisus | Foged | image |
| Neidium antarcticum | P.B. Hamilton, M. De Haan, K. Kopalová, R. Zidarova, & B. Van de Vijver | Diatom Research | 29: 32, figs. 17-31 | 2013 |
| Neidium antiquum | Schulz | image |
| Neidium apiculatoides | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 14, figs. 108-119 | 2017 |
| Neidium apiculatum f. majus_('major') | Manguin | image |
| Neidium apiculatum | Reimer | image |
| Neidium apiculatum var. australe_('australis') | Manguin | image |
| Neidium apiculatum var. constrictum | Reimer | image |
| Neidium arenarzense | H. Lange-Bertalot, P. Cavacini, N. Tagliaventi & S. Alfinito | Iconogr. Diatomol. | 12: 87, pl. 77: figs. 12-20; pl. 78: figs. 1-12 | 2003 |
| Neidium aubertii | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 24, pl. III: fig. 26 | 1955 |
| Neidium aubertii | Manguin | image |
| Neidium avenaceum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 19, figs. 183-187, 194-198 | 2017 |
| Neidium bacillum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 21, figs. 208-215, 221-225 | 2017 |
| Neidium baicalense f. leve | Jasnitsky | image |
| Neidium baicalense | Jasnitsky | image |
| Neidium beatyi | P.B. Hamilton et al. | Phytotaxa | 419: 46, figs., 2-10 | 2019 |
| Neidium bergii | (Cleve-Euler) Krammer | image |
| Neidium bifurcatum | Heiden | image |
| Neidium bigibborum | H.Z. Zhu & J.Y. Chen | Acta Phytotax. Sinica | 33: 517, fig. 1:3 | 1995 |
| Neidium binode | (Ehrenberg) Hustedt | image |
| Neidium binodeforme | Krammer | image |
| Neidium binodiforme_('binodeforme') | Krammer in Krammer & Lange-Bertalot | Biblioth. Diatomol. | 9: 102, pl. 5: figs. 14, 15; pl. 43 | 1985 |
| Neidium bisulcatum | (Lagerstedt) Cleve | image |
| Neidium bisulcatum f. baicalense_('baicalensis') | Skvortzov & Meyer | image |
| Neidium bisulcatum f. constrictum_('constricta') | Mayer | image |
| Neidium bisulcatum f. hankense | Skvortzov | image |
| Neidium bisulcatum f. inflatum_('inflata') | Mayer | image |
| Neidium bisulcatum f. latius_('latior') | Skvortzov | image |
| Neidium bisulcatum f. longissimum_('longissima') | Skvortzov | image |
| Neidium bisulcatum f. majus_('major') | Cleve-Euler | image |
| Neidium bisulcatum f. subcapitatum | Skvortzov | image |
| Neidium bisulcatum f. undulatum_('undulata') | (Otto Müller) Hustedt | image |
| Neidium bisulcatum var. baicalense_('baicalensis') | (Skvortzov & Meyer) Reimer | image |
| Neidium bisulcatum var. nipponicum_('nipponica') | Skvortzov | image |
| Neidium bisulcatum var. notatum_('notata') | Mereschkowsky | image |
| Neidium bisulcatum var. subampliatum | Krammer | image |
| Neidium bisulcatum var. subundulatum | (Grunow) Reimer | image |
| Neidium bisulcatum var. turgidulum | (Lagerstedt) Meister | image |
| Neidium bisulcatum var. undulatum | O. Müller | image |
| Neidium bobmarshallense_('bobmarshallensis') | L. Bahls | Phytotaxa | 82: 16, figs. 56-59 | 2013 |
| Neidium borari | A.C. Pereira, S. Melo, L. Torgan, R.G.R. Vidal, J.P. Kociolek & J.T.S. Alves in Pereira et al. | Phytotaxa | 606: 188, figs. 2-18 | 2023 |
| Neidium boreale | Foged | image |
| Neidium boyeri | Reimer | image |
| Neidium bruunii | Foged | image |
| Neidium buhrianum | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 169, pl. 185 | 2007 |
| Neidium calvum Østrup | | image |
| Neidium cape-codii | P.A. Siver & P.B. Hamilton in P.A. Siver, P.B. Hamilton, K. Stachura-Suchoples, & J.P. Kociolek | Diatom Research | 18: 133, figs. 9-26 | 2003 |
| Neidium capitatum | Cleve-Euler | image |
| Neidium capitatum | McCall | image |
| Neidium capitatum var. prolongatum_('prolongata') | Cleve-Euler | image |
| Neidium capitellatum_('capitellata') | Gandhi | image |
| Neidium capsulare | E.W. Thomas & J.P. Kociolek | Diatom Research | 23: 476, figs. 7-13, 24-30 | 2008 |
| Neidium carteri_('carterii') | Krammer | image |
| Neidium catarinense | (G. Krasske) H. Lange-Bertalot apud H. Lange-Bertalot et al. in H. Lange-Bertalot (ed.) | Icon. Diat. | 3: 101 | 1996 |
| Neidium chenii_('cheni') | Y. Liu & J.P. Kociolek in Liu et al. | Diatom Research | 29: 171 | 2013 |
| Neidium circumarcticum | D. Metzeltin & H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & N. Soninkhishig | Iconogr. Diatomol. | 20: 69, pl. 257 | 2009 |
| Neidium citreum | (Schmidt & Schmidt et al.) Cleve | image |
| Neidium collare | P.B. Hamilton et al. | Phytotaxa | 419: 52, figs. 45-68 | 2019 |
| Neidium constrictum | H.Z. Zhu & J.Y. Chen | Acta Phytotax. Sinica | 33: 517, fig. 1:4 | 1995 |
| Neidium constrictum | Mereschkowsky | image |
| Neidium continentale | M.S. Kulikovskiy, H. Lange-Bertalot & A. Witkowski in M.S. Kulikovskiy et al. | Biblioth. Diatomol. | 55: 46, pl. 97: figs. 1-3 | 2010 |
| Neidium convexum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 14, figs. 120-122, 128-130, 138-142 | 2017 |
| Neidium convolutum | Y. Liu & J.P. Kociolek in Liu et al. | Phytotaxa | 432: 172, figs. 1-23 | 2020 |
| Neidium coralieae | D. Metzeltin & K. Krammer apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 145, pl. 121: figs. 11-12 | 1998 |
| Neidium cuneatiforme | Z. Levkov in Levkov, Krstic, Metzeltin & Nakov | Icon. Diatomol. | 16: 106, pl. 114: figs. 1-9 | 2007 |
| Neidium cuneatum | K. Krammer & D. Metzeltin apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 146, pl. 124: fig. 6; pl. 127: fig. 2 | 1998 |
| Neidium curtihamatum | H. Lange-Bertalot, P. Cavacini, N. Tagliaventi & S. Alfinito | Iconogr. Diatomol. | 12: 88, pl. 77: figs. 1-11 | 2003 |
| Neidium cuspidatum f. elongatum_('elongata') | Skvortzov & Meyer | image |
| Neidium dayiense | Foged | image |
| Neidium decens | (Pantocsek) Stoermer | image |
| Neidium decoratum | Brun | image |
| Neidium decoratum var. bergii | Cleve-Euler | image |
| Neidium demerariense | K. Krammer & D. Metzeltin apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 147, pl. 120: figs. 2-7 | 1998 |
| Neidium densestriatum | (Østrup) Krammer | image |
| Neidium dicephalum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 23, figs. 231-236, 242-246 | 2017 |
| Neidium didelta | Hustedt | image |
| Neidium dilatatum | (Ehrenberg) Cleve | K. Svenska Vet.-Akad. Handl., ser. 4, | 26{2}: 70 | 1894 |
| Neidium dilatatum f. curtum_('curta') | Skvortzov | image |
| Neidium dilatatum var. angustatum | Skvortzov | image |
| Neidium dilatatum var. jacuticum_('jacutica') | Kisselev | image |
| Neidium dilatatum var. robustum_('robusta') | Molder | image |
| Neidium distincte-punctatum | Hustedt | image |
| Neidium distincte-punctatum var. majus_('major') | Sreenivasa | image |
| Neidium distinctepunctatum_('distincte-punctatum') | Hustedt | image |
| Neidium distinguendum | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 171, pl. 121: figs. 3-7 | 2007 |
| Neidium dubiforme | K. Krammer & D. Metzeltin apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 148, pl. 124: figs. 10-13 | 1998 |
| Neidium dubitatum | (Héribaud) Comère | La Nuova Notarisia, fascicolo commemorativo del 40 anno dalla fondazione della "Notarisia" (1886-1925): | 69 | 1925 |
| Neidium dubium | (Ehrenberg) Cleve | image |
| Neidium dubium f. argunense_('argunensis') | Skvortzov | image |
| Neidium dubium f. capitatum_('capitata') | Foged | image |
| Neidium dubium f. capitatum_('capitata') | N. Foged | Biblioth. Phycol. | 59: 68, pl. XII: fig. 6 | 1982 |
| Neidium dubium f. majus_('major') | Fontell | image |
| Neidium dubium f. maxima-apiculatum_('maxima, apiculata') | Cleve-Euler | image |
| Neidium dubium f. peisonis | (Grunow) Ant. Mayer | Denkschr. K.-Baier. Bot. Ges. Regensburg | 19: 122 | 1933 |
| Neidium dubium f. triundulatum_('triundulata') | Cholnoky | image |
| Neidium dubium f. undulatum_('undulata') | Skvortzov | image |
| Neidium dubium var. baikalense_('baikalensis') | Skvortzov | image |
| Neidium dubium var. capitatum | A. Mayer | Ber. Naturwiss. Ver. Regensburg | 17: 60, pl. III: fig. 4 | 1925 |
| Neidium dubium var. constrictum_('constricta') | Hustedt | image |
| Neidium dubium var. constrictum_('constricta') | Skvortzov & Meyer, illeg. | image |
| Neidium dubium var. elongatum | Hustedt | Arch. Hydrobiol. | 43: 448, text-fig. 10 | 1950 |
| Neidium dubium var. elongatum_('elongata') | Hustedt | image |
| Neidium dubium var. maius | Jurilj | image |
| Neidium dubium var. majus_('major') | (Fontell) Cleve-Euler | image |
| Neidium dubium var. oblongum Østrup | | image |
| Neidium dubium var. orientale_('orientalis') | Kisselev | Issledovaniya Morej SSSR | 14: 101, 115, pl. II: fig. 28 | 1931 |
| Neidium dubium var. peisonis | (Grunow) Mayer | image |
| Neidium dubium var. perforatum_('perforata') | Cleve-Euler | image |
| Neidium ehrenbergii | Reichardt & H. Lange-Bertalot in Metzeltin & Lange-Bertalot | Iconogr. Diatomol. | 18: 172 | 2007 |
| Neidium elegantulum | G.-R. Wang | Acta Palaeontol. Sin. | 37: 318, 324, pl. I: fig. 10 | 1998 |
| Neidium ellipticum | Voigt | Musée Heude. Notes de Botanique Chinoise | 3: 66, pl. III: fig. 26 | 1942 |
| Neidium ellipticum_('ellipticis') | H.Z. Zhu & J.Y. Chen | Acta Phytotax. Sinica | 33: 518, fig. 1:5 | 1995 |
| Neidium elongatum | (Hustedt) H. Lange-Bertalot, D. Metzeltin & Krammer in H. Lange-Bertalot & D. Metzeltin | Iconogr. Diatomol. | 2: 91 | 1996 |
| Neidium elpatievskyi | (Østrup) Vishnyakov in Vishnyakov et al. | Bot. Zhurn. | 100: 789 | 2015 |
| Neidium essequiboanum | D. Metzeltin & K. Krammer apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 149, pl. 120: figs. 13-16 | 1998 |
| Neidium excisum | K. Krammer, D. Metzeltin apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 149, pl. 123: figs. 5-6, 8; pl. 126: figs. 5-6 | 1998 |
| Neidium fairbanksense | Foged | image |
| Neidium falklandicum | J.P. Kociolek & E.F. Stoermer in J.P. Kociolek, E.F. Stoermer, & M.B. Edlund in J.P. Kociolek & M.J. Sullivan (eds.) | Century of diatom research in North America: | 10, figs. 1-16 | 1995 |
| Neidium falklandium | Kociolek & Stoermer | image |
| Neidium fasciatum var. denudatum Østrup | | image |
| Neidium fasciatum Østrup | | image |
| Neidium firmum | (Kützing) Pfitzer | Bot. Abh. [Bonn] | 1{2}: 39 | 1871 |
| Neidium firmum_('firma') | (Kützing) Pfitzer | image |
| Neidium floridanum | Reimer | image |
| Neidium fogedii | L. Bahls | Phytotaxa | 82: 18 | 2013 |
| Neidium fossum | K. Lefebvre & P.B. Hamilton | Phytotaxa | 220: 214, figs. 18, 20, 31-34, 43-47 | 2015 |
| Neidium friedrichii | Gandhi | image |
| Neidium frigidum | Foged | image |
| Neidium glaberrimum | (Østrup) R. Ross | image |
| Neidium gracile f. aequale_('aequalis') | Hustedt | image |
| Neidium gracile f. simplex | H. Lange-Bertalot & G. Moser in Moser, Steindorf & Lange-Bertalot | Biblioth. Diatomol. | 32: 137, pl. 79: fig. 2 | 1995 |
| Neidium gracile | Hustedt | image |
| Neidium grande_('grandis') | Gandhi | image |
| Neidium grunowii | Compère | image |
| Neidium hamatum | D. Metzeltin & K. Krammer apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 151, pl. 121: figs. 1-2 | 1998 |
| Neidium hamatum var. septentrionale | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 173, pl. 181 | 2007 |
| Neidium hamiltonii | J.P. Kociolek in Kociolek et al. | Biblioth. Diatomol. | 61: 34, pl. 44 | 2014 |
| Neidium hankense f. elongatum_('elongata') | Skvortzov & Meyer | image |
| Neidium hankense_('hankensis') | Skvortzov | image |
| Neidium hankense_('hankensis') | Skvortzov | image |
| Neidium hercynicum | A. Mayer | Denkschr. K. Bayer. Bot. Ges. | 13: 30, pl. III: figs. 2-4 | 1917 |
| Neidium hercynicum f. angustius_('angustior') | A. Mayer | Ber. Naturwiss. Ver. Regensburg | 17: 63, pl. III: figs. 6-12 | 1925 |
| Neidium hercynicum f. bogosoense_('bogosoensis') | Foged | image |
| Neidium hercynicum f. latius_('latior') | A. Mayer | Ber. Naturwiss. Ver. Regensburg | 17: 63, pl. III: figs. 10,11 | 1925 |
| Neidium hercynicum f. subrostratum | Wallace | image |
| Neidium hercynicum | Mayer | image |
| Neidium hercynicum var. ovale_('ovalis') | A. Mayer | Ber. Naturwiss. Ver. Regensburg | 17: 63, no fig. | 1925 |
| Neidium herrmannii_('herrmanni') | Hustedt | image |
| Neidium hitchcockii | (Ehrenberg) Cleve | K. Svenska Vet.-Akad. Handl., ser. 4, | 26{2}: 69 | 1894 |
| Neidium hitchcockii f. hankense_('hankensis') | Skvortzov | image |
| Neidium hitchcockii f. teres | Sovereign | image |
| Neidium hitchcockii var. obliquestriatum | Skvortzov | image |
| Neidium holstii | (Cleve) Krammer | image |
| Neidium huitfeldtii | Holmboe | image |
| Neidium hustedtii | Gandhi | image |
| Neidium hustedtii | R.F. Bastow | Rep. & Trans. Devonshire Assoc. Advancem. Sci., Lit. & Art | 86: 288, pl. 1: figs. 1, 1a,b | 1954 |
| Neidium hustedtii var. ellipticum | R.F. Bastow | Rep. & Trans. Devonshire Assoc. Advancem. Sci., Lit. & Art | 89: 272, fig. 6a | 1957 |
| Neidium improvisum | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 11: 42, pl. 50: figs. 16-18; pl. 54: figs. 3-5 | 2003 |
| Neidium inconspicuum | Hustedt | image |
| Neidium inconstans | Sovereign | Proc. Calif. Acad. Sci. ser. 4, | 31: 351, fig. 13 | 1963 |
| Neidium incurvum | (Gregory) Østrup | image |
| Neidium indicum f. undulatum_('undulata') | Gonzalves & Gandhi | image |
| Neidium indicum | Gonzalves & Gandhi | image |
| Neidium indicum var. capitatum_('capitata') | Gonzalves & Gandhi | image |
| Neidium infirmum | D. Metzeltin & K. Krammer apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 152, pl. 118: figs. 1-8 | 1998 |
| Neidium iridis | (Ehrenberg) Cleve | image |
| Neidium iridis f. ambiguum_('ambigua') | Gonzalves & Gandhi | image |
| Neidium iridis f. angustum_('angusta') | Skvortzov | image |
| Neidium iridis f. conspicuum_('conspicua') | Mayer ex Hustedt | image |
| Neidium iridis f. curtum_('curta') | Margalef | image |
| Neidium iridis f. dhulense_('dhulensis') | Sarode & Kamat | image |
| Neidium iridis f. elongatum_('elongata') | Fusey | image |
| Neidium iridis f. hinganicum_('hinganica') | Skvortzov | image |
| Neidium iridis f. luminosum | Brun | image |
| Neidium iridis f. maius_('maior') | Margalef | image |
| Neidium iridis f. maius_('maior') | Margalef | image |
| Neidium iridis f. maius_('maior') | Margalef | image |
| Neidium iridis f. marraitense_('marraitensis') | Foged | Tromsö Museums Skrifter | 11: 77, pl. IV: figs. 2a, b | 1964 |
| Neidium iridis f. maximum_('maxima') | (Cleve) Hustedt | image |
| Neidium iridis f. minus_('minor') | (Dippel) Cleve-Euler | image |
| Neidium iridis f. minus_('minor') | Krasske | image |
| Neidium iridis f. rostratum_('rostrata') | Hustedt | image |
| Neidium iridis f. subundulatum_('subundulata') | Cleve-Euler | image |
| Neidium iridis f. triundulatum_('triundulata') | Cleve-Euler | image |
| Neidium iridis f. vernale | Reichelt ex Hustedt | image |
| Neidium iridis f. vernale_('vernalis') | Reichelt ex Hustedt in Pascher | Süssw.-Fl. | 10, 2.Aufl.: 245, fig. 380 | 1930 |
| Neidium iridis var. amphigomphus | (Ehrenberg) A. Mayer | Denkschr. K.-Baier. Bot. Ges. Regensburg | 13: 30 | 1917 |
| Neidium iridis var. amphigomphus | (Ehrenberg) Frenguelli | image |
| Neidium iridis var. amphigomphus_(`amphigompha') | (Ehrenberg) Tempère & H. Peragallo | Diat. Monde Entier, ed. 2: | 312 | 1912 |
| Neidium iridis var. amphirhynchus | A. Mayer | Denkschr. K. Bayer. Bot. Ges. | 13: 29, pl. II: fig. 34 | 1917 |
| Neidium iridis var. ampliatum_('ampliata') | (Ehrenberg) Cleve | image |
| Neidium iridis var. baikalense_('baikalensis') | Skvortzov | image |
| Neidium iridis var. bryophilum | McCall | image |
| Neidium iridis var. conspicuum_('conspicua') | Mayer | image |
| Neidium iridis var. dissimile_('dissimilis') | Jao & Zhu | image |
| Neidium iridis var. dubium_('dubia') | (Ehrenberg) Frenguelli | image |
| Neidium iridis var. firmum | (Kützing) A. Mayer | image |
| Neidium iridis var. genuinum_('genuina') | Mayer | image |
| Neidium iridis var. indicum_('indica') | Gandhi | image |
| Neidium iridis var. intercedens | A. Mayer | Denkschr. K. Bayer. Bot. Ges. | 13: 113, pl. I: fig. 34 | 1917 |
| Neidium iridis var. intermedium_('intermedia') | (Dippel) Cleve-Euler | image |
| Neidium iridis var. lineolatum | F.R. Schoeman in Schoeman & Meaton | CSIR Special Report WAT | 64: 31 | 1982 |
| Neidium iridis var. majus | (Grunow) Ross | image |
| Neidium iridis var. maximum_('maxima') | (Cleve) Mayer | image |
| Neidium iridis var. medium_('media') | (Dippel) Tsumura | image |
| Neidium iridis var. minus_('minor') | A. Mayer | Denkschr. K. Bayer. Bot. Ges. | 13: 135, pl. II: fig. 13 | 1917 |
| Neidium iridis var. nipponicum_('nipponica') | Skvortzov | image |
| Neidium iridis var. oblongum_('oblonga') | Cleve-Euler | image |
| Neidium iridis var. oblongum_('oblonga') | Cleve-Euler | image |
| Neidium iridis var. obtusioides | Foged | image |
| Neidium iridis var. obtusum_('obtusa') | Hustedt | image |
| Neidium iridis var. orochenicum | Skvortzov | image |
| Neidium iridis var. parallelum_('parallela') | Zanon | image |
| Neidium iridis var. parallelum_('parallela') | Zanon | Comment. Pontif. Acad. Sci. | 2: 619, fig. 1 | 1938 |
| Neidium iridis var. parallelum_(`parallela') | W. Krieger | Beitr. Naturdenkmalpflege | 13: 270, pl. II: fig. 27 | 1929 |
| Neidium iridis var. rhodanum | (J. Brun) Comère | La Nuova Notarisia, fascicolo commemorativo del 40 anno dalla fondazione della "Notarisia" (1886-1925): | 69 | 1925 |
| Neidium iridis var. robustum_('robusta') | McCall | image |
| Neidium iridis var. singulare_('singularis') | Skvortzov | image |
| Neidium iridis var. subampliatum_('subampliata') | (Grunow) Cleve-Euler | image |
| Neidium iridis var. subrhomboideum_('subrhomboidea') | Cleve-Euler | image |
| Neidium iridis var. undulatum | A. Mayer | Ber. Naturwiss. Ver. Regensburg | 17: 58, pl. II: figs. 10,11 | 1925 |
| Neidium iridis var. vernale | (Reichelt ex Hustedt) G.W. Andrews | U.S. Geol. Surv. Prof. Pap. | 523-A: 18 | 1966 |
| Neidium iridis var. vernale_('vernalis') | (Reichelt) Andrews | image |
| Neidium islandicum Østrup | | image |
| Neidium itapariense_('itapariensis') | A.C. Pereira, J.T.S. Alves, J.P. Kociolek & S. Melo in S. Alves in Pereira et al. | Phytotaxa | 606: 191, figs. 19-25 | 2023 |
| Neidium javanicum | Hustedt | image |
| Neidium jogensis | Gandhi | image |
| Neidium juba | J.R. Carter | image |
| Neidium khentiiense | D. Metzeltin, H. Lange-Bertalot & N. Soninkhishig | Iconogr. Diatomol. | 20: 70, pl. 100: figs. 1-6 | 2009 |
| Neidium knuthii | Foged | image |
| Neidium knuthii var. heilprinense_('heilprinensis') | Foged | image |
| Neidium kozlowii f. majus | H.Z. Zhu & J.Y. Chen | Acta Phytotax. Sinica | 33: 518, fig. 1:7 | 1995 |
| Neidium kozlowii f. robustum_('robusta') | Stoermer | image |
| Neidium kozlowii f. subrostratum_('subrostrata') | Fusey | image |
| Neidium kozlowii | Mereschkowsky | image |
| Neidium kozlowii var. amphicephalum_('amphicephala') | Mereschkowsky | image |
| Neidium kozlowii var. baicalense_('baicalensis') | Skvortzov & Meyer | image |
| Neidium kozlowii var. ceylonicum_('ceylonica') | Skvortzov | image |
| Neidium kozlowii var. densestriatum_('densestriata') | Foged | Biblioth. Phycol. | 53: 135, pl. XXV: fig. 11 | 1981 |
| Neidium kozlowii var. densistriatum | H.Z. Zhu & J.Y. Chen | Diatoms of the Suoxiyu Nature Reserve Area: | 59 | 1989 |
| Neidium kozlowii var. ellipticum_('elliptica') | Mereschkowsky | image |
| Neidium kozlowii var. ellipticum_('elliptica') | Mereschkowsky | image |
| Neidium kozlowii var. hankense_('hankensis') | Skvortzov | image |
| Neidium kozlowii var. montanum | Muzafarov | image |
| Neidium kozlowii var. nipponicum_('nipponica') | Skvortzov | image |
| Neidium kozlowii var. parvum_('parva') | Mereschkowsky | image |
| Neidium kozlowii var. parvum_('parva') | Mereschkowsky | image |
| Neidium kozlowii var. rostratum_('rostrata') | Frenguelli | image |
| Neidium kozlowii var. sierraleonense_('sierraleonensis') | Woodhead & Tweed | image |
| Neidium kozlowii var. typicum | Ross | image |
| Neidium kozlowii var. undulatum_('undulata') | Stoermer | Not. Nat. Acad. Nat. Sci. Philadelphia | 358: 6, text-fig. 1 | 1963 |
| Neidium krasskei | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 174, pl. 190 | 2007 |
| Neidium kumasiense | Foged | image |
| Neidium lacusbaikali_('lacus baikali') | Skvortzov | image |
| Neidium lacusflorum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 18, figs. 163-166 | 2017 |
| Neidium ladodense_('ladogensis') | (Cleve) Foged | Bot. Not. | 1952: 167 | 1952 |
| Neidium ladogense | (Cleve) E.F. Stoermer & J.J. Yang | Great Lakes Research Division Special Report | 47: 144 | 1969 |
| Neidium ladogense f. maius_('maior') | Foged | image |
| Neidium ladogense f. peribryum | Lowe & Kociolek | image |
| Neidium ladogense var. densestriatum | (Østrup) Foged | Bot. Not. | 1952: 167 | 1952 |
| Neidium lanceolatum_('lanceolata') | Skvortzov | image |
| Neidium latum | K. Krammer & D. Metzeltin apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 153, pl. 119: figs. 1-3; pl. 126: figs. 1-4 | 1998 |
| Neidium lavoieanum | P.B. Hamilton et al. | Phytotaxa | 419: 56, figs. 69-82 | 2019 |
| Neidium lente_('lentis') | Carter & Denny | image |
| Neidium levanderi | (Hustedt) H. Lange-Bertalot & D. Metzeltin | Iconogr. Diatomol. | 2: 91 | 1996 |
| Neidium ligulatum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 22, figs. 226-230, 237-241 | 2017 |
| Neidium limnophilum | D. Bennett & J.P. Kociolek in Kociolek et al. | Biblioth. Diatomol. | 61: 32, pl. 40: figs. 14-19; pl. 42: figs. 4-8 | 2014 |
| Neidium limosum_('limosa') | (Kützing) Pfitzer | image |
| Neidium limuae | Y. Liu & J.P. Kociolek in Liu et al. | Diatom Research | 29: 166, figs. 1-20 | 2013 |
| Neidium lineare Østrup | | image |
| Neidium lineare_('linearis') | (Grunow) Schaarschmidt | image |
| Neidium longiceps | (Gregory) Ross | image |
| Neidium lowei | K. Lefebvre & P.B. Hamilton in Lefebvre, Hamilton & Pick | J. Phycol. | 53: 694, figs. 8, 13a-d | 2017 |
| Neidium lucinense | (Hustedt) Metzeltin & Lange-Bertalot in Kusber et al. | Notulae algarum | 209: 2 | 2021 |
| Neidium maculatum | Maillard | image |
| Neidium magdalenae | Manguin | image |
| Neidium magellanicum | Cleve | image |
| Neidium maius | Jurilj | image |
| Neidium majus | Z. Levkov in Levkov, Krstic, Metzeltin & Nakov | Icon. Diatomol. | 16: 104 | 2007 |
| Neidium manshuricum | Skvortzov | image |
| Neidium marathwadense | Sarode & Kamat | image |
| Neidium marraitense_('marraitensis') | Foged | image |
| Neidium maximum | (Cleve) Meister | image |
| Neidium maximum var. hankense_('hankensis') | Skvortzov | image |
| Neidium meadeense f. ellipticum_('elliptica') | Foged | image |
| Neidium meadeense | Foged | image |
| Neidium meisteri | Hustedt | image |
| Neidium meyeri | V.S. Vishnyakov, M.S. Kulikovskiy & S.I. Genkal in Vishnyakov et al. | Bot. Zhurn. | 100: 790, pl. III | 2015 |
| Neidium minus | Tosh. Watanabe et al. ex A. Tuji | Algae Aquae Dulcis Japonicae Exsiccatae | VII: 9, figs. 124: 1-6 | 2016 |
| Neidium minutissimum | Cleve-Euler | image |
| Neidium minutissimum | Krasske | image |
| Neidium miopsa | Carter & Denny | image |
| Neidium miopsa | J.R. Carter & P. Denny | Nova Hedwigia | 54: 189, pl. 6: fig. 26 | 1992 |
| Neidium mirabile | Hustedt | image |
| Neidium mirum | Krasske | image |
| Neidium moeszianum f. curtum_('curta') | Quint & Greguss | image |
| Neidium moeszianum | Pantocsek & Greguss | image |
| Neidium moeszianum var. kudsiriense | Quint & Greguss | image |
| Neidium munckii | Foged | image |
| Neidium muyrakytan | A.C. Pereira, J.P. Kociolek & S. Melo in Pereira et al. | Phytotaxa | 606: 191, figs. 26-39 | 2023 |
| Neidium neotropicum | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 175, pl. 188: figs. 4-6 | 2007 |
| Neidium nipponicum f. rostratum | Kobayasi | image |
| Neidium nipponicum var. rostratum | H. Kobayasi | image |
| Neidium nipponicum_('nipponica') | Skvortzov | image |
| Neidium nivale | Foged | image |
| Neidium nsuaemense | Foged | image |
| Neidium nugsuaqense_('nugsuaqensis') | Foged | image |
| Neidium nyvltii | P.B. Hamilton, M. De Haan, K. Kopalová, R. Zidarova, & B. Van de Vijver | Diatom Research | 29: 29, figs. 2-16 | 2013 |
| Neidium oblique-striatum | (Schmidt) Cleve | image |
| Neidium oblique-striatum var. apiculatum_('apiculata') | Skvortzov | image |
| Neidium oblique-striatum var. capitatum | Skvortzov & Noda | image |
| Neidium oblique-striatum var. elongatum_('elongata') | Skvortzov | image |
| Neidium oblique-striatum var. lanceolatum | Skvortzov & Noda | image |
| Neidium oblique-striatum var. nipponicum_('nipponica') | Skvortzov | image |
| Neidium oblique-striatum var. nipponicum_('nipponica') | Skvortzov | image |
| Neidium oblique-striatum var. parallelum_('parallela') | Gonzalves & Gandhi | image |
| Neidium oblique-striatum var. rostratum_('rostrata') | Skvortzov | image |
| Neidium obliquum | D. Metzeltin & K. Krammer apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 154, pl. 124: figs. 4-5; pl. 127: figs. 3-4 | 1998 |
| Neidium oblongum | H.Z. Zhu & J.Y. Chen | Acta Phytotax. Sinica | 33: 518, fig. 1:6 | 1995 |
| Neidium oblongum | Tynni | image |
| Neidium occidentale | J.P. Kociolek in Kociolek et al. | Biblioth. Diatomol. | 61: 33, pl. 43 | 2014 |
| Neidium odamii | R.F. Bastow | Rep. & Trans. Devonshire Assoc. Advancem. Sci., Lit. & Art | 86: 289, pl. 30: fig. 5 | 1954 |
| Neidium opacelineatum | Riznyk | image |
| Neidium opulentum | Hustedt | image |
| Neidium palpebrum | K. Stachura-Suchoples, J.P. Kociolek & P.A. Siver | Diatom Research | 25: 386, figs. 1-11 | 2010 |
| Neidium panduriforme Østrup | | image |
| Neidium panhalgarhense_('panhalgarhensis') | H.P. Gandhi | image |
| Neidium paraffine | H. Lange-Bertalot, P. Cavacini, N. Tagliaventi & S. Alfinito | Iconogr. Diatomol. | 12: 89, pl. 76: figs. 5-9 | 2003 |
| Neidium perforatum | Schimanski | image |
| Neidium peruvianum | Manguin | image |
| Neidium petersiveri | K.H. Nicholls | Botany | 99: 533, figs. 1-27, 30 | 2021 |
| Neidium platense | Frenguelli | image |
| Neidium plexum | Carter & Denny | image |
| Neidium polygibbum | (Brun) D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 11: 43 | 2003 |
| Neidium popeiense_('popeiensis') | Carter & Denny | image |
| Neidium popeiense_(`popeiensis') | J.R. Carter & P. Denny | Nova Hedwigia | 54: 189, pl. 6: fig. 27 | 1992 |
| Neidium potapovae | K. Lefebvre & P.B. Hamilton in Lefebvre, Hamilton & Pick | J. Phycol. | 53: 693, figs. 7, 12a-e | 2017 |
| Neidium preschevalskii var. koreana | Skvortzov | image |
| Neidium productum | (W. Smith) Cleve | image |
| Neidium productum f. minus_('minor') | Mayer | image |
| Neidium productum f. nipponicum | Skvortzov & Noda | image |
| Neidium productum var. bombayense_('bombayensis') | Gonzalves & Gandhi | image |
| Neidium productum var. constrictum | Hustedt | image |
| Neidium productum var. minus_('minor') | Cleve-Euler | image |
| Neidium productum var. polygibbum_('polygibba') | Brun | image |
| Neidium productum var. polygibbum_(`polygibba') | Brun | Bih. Kongl. Svenska Vetensk.-Akad. Handl. | 26(Afd. III, 18): 18, pl. 2: fig. 23 | 1901 |
| Neidium productum var. triundulatum_('triundulata') | Hustedt | image |
| Neidium promontorium | K. Lefebvre & P.B. Hamilton in Lefebvre, Hamilton & Pick | J. Phycol. | 53: 696, figs. 9a-f, 13e-h | 2017 |
| Neidium pseudiridis | Cleve-Euler | image |
| Neidium pseudodensestriatum | K. Stachura-Suchoples, & J.P. Kociolek in K. Stachura-Suchoples, J.P. Kociolek, & P.A. Siver | Proc. Int. Diat. Symp. | 17: 360, figs. 1-23 | 2004 |
| Neidium pseudogracile_('pseudogracilis') | Kobayasi | image |
| Neidium punctulatum | Hustedt | image |
| Neidium qii_('qia') | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 9, figs. 40-44, 53-57 | 2017 |
| Neidium quadratum | J.P. Kociolek in Kociolek et al. | Biblioth. Diatomol. | 61: 31, pl. 40: figs. 9-13; pl. 42 | 2014 |
| Neidium quadripunctata_('quadripunctata') | Fusey | Cahiers Maboke | 4: 62, pl. II: fig. 32 (in Fusey, Cahiers Maboke 2. 1964) | 1966 |
| Neidium quadriundulatum | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 11: 43, pl. 53: figs. 1, 2 | 2003 |
| Neidium radiosum | Voigt | Musée Heude. Notes de Botanique Chinoise | 3: 69, pl. IV: fig. 8 | 1942 |
| Neidium rectum | Hustedt | image |
| Neidium reimeri | J. John | Nova Hedwigia | 34: 571, pl. 2 [=fig. 2] | 1981 |
| Neidium reimeri | John | image |
| Neidium rhodanum | (J. Brun) J. Brun | image |
| Neidium roenningii | Foged | Tromsö Museums Skrifter | 11: 78, pl. V: fig. 2 | 1964 |
| Neidium roland-schmidtii | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 177, pl. 186 | 2007 |
| Neidium rosenkrantzii | Foged | image |
| Neidium rostellatum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 25, figs. 253-258, 264-268 | 2017 |
| Neidium rostratum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 13, figs. 92-97, 103-107 | 2017 |
| Neidium rudimentarum | Reimer | image |
| Neidium rugosum | P.B. Hamilton, M.G. Potapova, & L.I. Kopyrina in Potapova et al. | Phytotaxa | 156: 104, figs. 35-39, 45, 46 | 2014 |
| Neidium sacoense | Reimer | image |
| Neidium sacoense_('sacoensis') | Reimer | image |
| Neidium sardiniense | H. Lange-Bertalot, P. Cavacini, N. Tagliaventi & S. Alfinito | Iconogr. Diatomol. | 12: 91, pl. 75: figs. 1-11; pl. 76: figs. 1-4 | 2003 |
| Neidium sauramoi | Mölder | image |
| Neidium septentrionale_('septentrionalis') | Cleve-Euler | image |
| Neidium simplex | (H. Lange-Bertalot & G. Moser) H. Lange-Bertalot in Metzeltin & Lange-Bertalot | Iconogr. Diatomol. | 18: 178 | 2007 |
| Neidium siveri | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 179, pl. 192: figs. 1-3 | 2007 |
| Neidium skvortzowii | Kobayasi | image |
| Neidium spectatum | J.P. Kociolek in Kociolek et al. | Biblioth. Diatomol. | 61: 30, pl. 40: figs. 1-8; pl. 41 | 2014 |
| Neidium spitsbergense | Foged | Tromsö Museums Skrifter | 11: 78, pl. III: fig. 16 | 1964 |
| Neidium statuarium | P.B. Hamilton & P.A. Siver in Siver & Hamilton | Canad. J. Bot. | 83: 364, figs. 6-9, 15-19 | 2005 |
| Neidium sterrenburgii | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 180, pl. 184 | 2007 |
| Neidium stoermeri | E.W. Thomas & J.P. Kociolek | Diatom Research | 23: 472, figs. 1-6, 14-23 | 2008 |
| Neidium subamphigomphus | K. Krammer & D. Metzeltin apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 155, pl. 120: figs. 10-12 | 1998 |
| Neidium subampliatum | (Grunow) R.J. Flower | Diatom Research | 20: 64 | 2005 |
| Neidium subdubium | D. Metzeltin & K. Krammer apud D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 156, pl. 119: figs. 6-9 | 1998 |
| Neidium suboblongum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 10, figs. 45-52, 58-62 | 2017 |
| Neidium subproductum | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 181, pl. 189: figs. 4-6 | 2007 |
| Neidium suoxiyuae | Y. Liu & J.P. Kociolek in Liu et al. | Diatom Research | 29: 171 | 2013 |
| Neidium tabelliforme | E. Reichardt | Iconogr. Diatomol. | 13: 439, pl. 8: figs. 1-9 | 2004 |
| Neidium tabletta | Carter & Denny | image |
| Neidium tabletta | J.R. Carter & P. Denny | Nova Hedwigia | 54: 190, pl. 6: figs. 29, 30 | 1992 |
| Neidium taiaense_('taiaensis') | Carter & Denny | image |
| Neidium tanganyikae | (G.S. West) F.W. Mills | image |
| Neidium temperei | Reimer | image |
| Neidium tenellum | Mayer | image |
| Neidium tenue | Østrup | Danske Diat.: | 22, pl. I: fig. 16 | 1910 |
| Neidium tenue Østrup | | image |
| Neidium tenuissimum | Hustedt | image |
| Neidium terrestre | Bock | image |
| Neidium testa | J.R. Carter | image |
| Neidium tibetianum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 20, figs. 188-193, 199-203 | 2017 |
| Neidium tibeticum_('tibetica') | Y. Liu & J.P. Kociolek in Liu et al. | Diatom Research | 29: 171 | 2013 |
| Neidium tokyoense | Kobayasi | image |
| Neidium tortum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 12, figs. 85-91, 98-102 | 2017 |
| Neidium trainorii_('trainori') | P.A. Siver & P.B. Hamilton in Siver, Hamilton, & Pelczar | Botany | 87: 423, figs. 66-83 | 2009 |
| Neidium trigonocephalum | (Ehrenberg) A. Tuji & Y. Tanimura | Bull. Natl. Sci. Mus. [Tokyo], Ser. B (Bot.), | 32: 169 | 2006 |
| Neidium triundulatum | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 8, figs. 31-39 | 2017 |
| Neidium tumescens | (Grunow) Cleve | image |
| Neidium umiatense | Foged | image |
| Neidium undulatum | (Stoermer) L. Bahls | Phytotaxa | 82: 18, figs. 66-68 | 2013 |
| Neidium vandusenense | P.B. Hamilton et al. | Phytotaxa | 419: 48, figs. 19-44 | 2019 |
| Neidium vanlandinghamii | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 182, pl. 182 | 2007 |
| Neidium vekhovii | H. Lange-Bertalot & S.I. Genkal in H. Lange-Bertalot, S.I. Genkal, & N.V. Vekhov | Biol. Inland Waters | 2004{4}: 15, pl. 2: figs. | 2004 |
| Neidium vernale | (Reichelt ex Hustedt) D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: | 2007 |
| Neidium vietnamense_('vietnamensis') | A. Glushchenko, M. Kulikovskiy & J.P. Kociolek in Glushchenko et al. | Diatom Research | 34: 262, figs. 1-21 | 2020 |
| Neidium wagnerianum | Pantocsek & Greguss | image |
| Neidium zafarii | Sarode & Kamat | image |
| Neidium zhui | Y. Liu & J.P. Kociolek in Liu et al. | Diatom Research | 29: 171 | 2013 |
| Neidium zoigeanum_('zoigeaeum') | Q. Liu, Q.X. Wang, & J.P. Kociolek in Liu et al. | Bibliotheca Diatomologica | 63: 17, figs. 153-162 | 2017 |