The INA is a card file and online reporting system maintained at the Silva Center for Phycological Documentation of the University Herbarium, University of California, Berkeley. It contains nearly 200,000 names of algae (in the broad sense). The BPU is a card file containing bibliographic references pertaining to algal taxonomy.
A working list of algal type specimens at UC is available here
Results from INA database
| Name | Author | Source | Citation | Year |
|---|---|---|---|---|
| ACHNANTHES subg. ACHNANTHIDIUM | (Kützing) C.W. Reimer in R. Patrick & C.W. Reimer | Monogr. Acad. Nat. Sci. Philadelphia | 13{1}: 247 | 1966 |
| ACHNANTHES subg. | ACHNANTHIDIUM (Kützing) C.W. Reimer | image | ||
| ACHNANTHES subg. | ACHNANTHIDIUM (Kützing) C.W. Reimer | image | ||
| ACHNANTHES subg. | ACHNANTHIDIUM Hustedt | image | ||
| ACHNANTHES subg. | ACHNANTHIDIUM Hustedt | image | ||
| ACHNANTHES subg. ACHNANTHIDIUM | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 418 | 1933 |
| ACHNANTHIDIUM | (Kützing) C.W. Reimer in R. Patrick & C.W. Reimer | Monogr. Acad. Nat. Sci. Philadelphia | 13{1}: 247 | 1966 |
| ACHNANTHIDIUM | (Kützing) C.W. Reimer | image | ||
| ACHNANTHIDIUM | (Kützing) Schütt | image | ||
| ACHNANTHIDIUM | Brun | image | ||
| ACHNANTHIDIUM | Hustedt illegitimate | image | ||
| ACHNANTHIDIUM | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 418 | 1933 |
| ACHNANTHIDIUM | Kützing | image | ||
| ACHNANTHIDIUM | P.T. Cleve invalid | image | ||
| ACHNANTHIDIUM | P.T. Cleve | K. Svenska Vet.-Akad. Handl., ser. 4, | 27{3}: 165 (key), 191 | 1895 |
| Achnanthidium acerosum | B. Van de Vijver, H. Lange-Bertalot & A. Jarlman in B. Van de Vijver et al. | Algol. Studies | 136/137: 198, figs. 18-25 | 2011 |
| Achnanthidium acsiae | A. Wojtal, E. Morales, B. Van de Vijver & L. Ector in A. Wojtal et al. | Algol. Studies | 136/137: 226, figs. 155-184 | 2011 |
| Achnanthidium acutum | L.F. Costa, C.E. Wetzel, L. Ector in Costa et al., | Phytotaxa | 575: 194, figs. 2-25 | 2022 |
| Achnanthidium affine | (Grunow) D.B. Czarnecki | Proc. Int. Diatom Symp. | 11 [Mem. Calif. Acad. Sci. 17]: 156 | 1994 |
| Achnanthidium agardhii | (Kützing) Mereschkowsky | image | ||
| Achnanthidium alpestre | (R. Lowe & J.P. Kociolek) R. Lowe & J.P. Kociolek in J.R. Johansen et al. | Arch. Hydrobiol. Suppl. | 150 (Algol. Stud. 111): 23 | 2004 |
| Achnanthidium alteragracillimum_('altergracillima') | (Lange-Bertalot) F.E. Round & L.N. Bukhtiyarova, inval. | image | ||
| Achnanthidium alteragracillimum_('altergracillima') | (Meister) F.E. Round & L.N. Bukhtiyarova | Diatom Research | 11: 349 | 1996 |
| Achnanthidium alteragracillimum_('altergracillima') | F.E. Round & L. Bukhtiyarova | image | ||
| Achnanthidium amphicephalum | (Hustedt) I. Jüttner, C.E. Wetzel & Z. Levkov in Jüttner et al., | Fottea | 23: 127 | 2023 |
| Achnanthidium ampliatum | Y. Liu, M. Kulikovskiy & J.P. Kociolek in Liu et al. | Phytotaxa | 516: 191, figs. 1-26 | 2021 |
| Achnanthidium anatolicum | C.N. Solak, A.Z. Wojtal, S. Blanco, Ł. Peszek & M. Rybak | Plant Ecology and Evolution | 155: 230, figs. 8-10 | 2022 |
| Achnanthidium anhuense | P. Yu, Q.M. You & Q.X. Wang in Yu et al. | PhytoKeys | 191: 13, figs. 1A-AD, 2-5 | 2022 |
| Achnanthidium archibaldianum | (H. Lange-Bertalot) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 270 | 1999 |
| Achnanthidium arcticum | Cleve | image | ||
| Achnanthidium arcus | (Hustedt) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 270 | 1999 |
| Achnanthidium atomoides | O. Monnier, H. Lange-Bertalot & L. Ector in Monnier et al. | Vie et Milieu | 54: 128, figs. 1-41, 117-123 | 2004 |
| Achnanthidium atomus | (Hustedt) O. Monnier, H. Lange-Bertalot & L. Ector in Monnier et al. | Vie et Milieu | 54: 133 | 2004 |
| Achnanthidium australexiguum | B. Van de Vijver in Taylor et al. | Fottea | 14: 47, figs. 65-92 | 2014 |
| Achnanthidium baldjikii | Grunow | image | ||
| Achnanthidium barbei | R. Le Cohu & F. Peres in Peres et al. | Diatom Research | 29: 388, figs. 1-40 | 2014 |
| Achnanthidium barlasii | C.N. Solak, A.Z. Wojtal, S. Blanco, Ł. Peszek & M. Rybak | Plant Ecology and Evolution | 155: 227, figs. 2-4 | 2022 |
| Achnanthidium biasolettianum | (Grunow) F.E. Round & L. Bukhtiyarova | image | ||
| Achnanthidium biasolettianum | (Grunow) F.E. Round & L.N. Bukhtiyarova | Diatom Research | 11: 350 | 1996 |
| Achnanthidium biasolettianum | (Grunow) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 270 | 1999 |
| Achnanthidium biasolettianum_('biasolettiana') | (Kützing) L.N. Bukhtiyarova | Algologia | 5: 420 | 1995 |
| Achnanthidium bioretii | (H. Germain) M.B. Edlund | J. Minnesota Acad. Sci. | 59: 12 | 1994 |
| Achnanthidium biporomum | (M.H. Hohn & J. Hellerman) D.B. Czarnecki in Czarnecki & Edlund | Diatom Res. | 10: 208 | 1995 |
| Achnanthidium blancheanum | (R. Maillard ex H. Lange-Bertalot & A. Steindorf) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 270 | 1999 |
| Achnanthidium brasiliense | L.F. Costa & G.C. Marquardt in Costa et al., | Phytotaxa | 575: 196, 26-44 | 2022 |
| Achnanthidium bratanense | D.A. Kapustin, A.M. Glushchenko & M.S. Kulikovskiy | PhytoKeys | 188: 169, figs. 1, 2 | 2022 |
| Achnanthidium brevipes | (C. Agardh) Heiberg | image | ||
| Achnanthidium brevipes | Heiberg | Consp. Crit. Diat. Dan.: | 118 | 1863 |
| Achnanthidium brevipes var. biareolatum_('biareolata') | Mereschkowsky | image | ||
| Achnanthidium brevipes var. tumidulum | (Grunow) Meister | image | ||
| Achnanthidium cadimae | E. Morales, E. Fernández & L. Ector in E.A. Morales et al. | Algol. Studies | 136/137: 109, figs. 197-210, 274-284 | 2011 |
| Achnanthidium caledonicum | (H. Lange-Bertalot) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 271 | 1999 |
| Achnanthidium capitatum | C. Riaux-Gobin, O. Romero, P. Compère, & A. Handal | Biblioth. Diatomol. | 57: 13, pls. 9, 10 | 2011 |
| Achnanthidium caravelense | M.E. Novais & L. Ector in M.E. Novais et al. | Algol. Studies | 136/137: 142, figs. 1-36 | 2011 |
| Achnanthidium catenatum | (J. Bílý & Marvan) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 271 | 1999 |
| Achnanthidium cavitatum | M. Miao & B.-H. Kim in Miao et al. | Diversity | 12{285}: 7, figs. 5-7 | 2020 |
| Achnanthidium chitrakootense | A. Wojtal, H. Lange-Bertalot, & P. Nautiyal in Wojtal et al. | Polish Bot. J. | 55: 58, figs. 2-32 | 2010 |
| Achnanthidium chlidanos | (M.H. Hohn & J. Hellerman) E. Novelo, R. Tavera, & C. Ibarra | Bibliotheca Diatomol. | 54: 28 | 2007 |
| Achnanthidium clevei | (Grunow) D.B. Czarnecki in Czarnecki & Edlund | Diatom Res. | 10: 207 | 1995 |
| Achnanthidium clevei var. rostratum | (Hustedt) M.B. Edlund in Czarnecki & Edlund | Diatom Res. | 10: 207 | 1995 |
| Achnanthidium clevei var. rostratum | (Hustedt) M.B. Edlund | J. Minnesota Acad. Sci. | 59: 12 | 1994 |
| Achnanthidium coarctatum | Brébisson ex W. Smith | Ann. & Mag. Nat. Hist., ser. 2, | 15: 8, pl. I: fig. 10 | 1855 |
| Achnanthidium coarctatum | Brébisson ex W. Smith | image | ||
| Achnanthidium coarctatum var. elineatum | Lagerstedt | image | ||
| Achnanthidium coarctatum var. otrantinum | (Rabenhorst) Rabenhorst | image | ||
| Achnanthidium cocconeiformis | Mereschkowsky | image | ||
| Achnanthidium contractum | Schumann | image | ||
| Achnanthidium contrarea | (H. Lange-Bertalot & A. Steindorf) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 271 | 1999 |
| Achnanthidium convergens | (H. Kobayasi) H. Kobayasi | Nova Hedwigia | 65: 159 | 1997 |
| Achnanthidium costei | R. Le Cohu & F. Peres in Peres et al. | Diatom Research | 29: 390, figs. 41-80 | 2014 |
| Achnanthidium coxianum | I. Jüttner, L. Ector & C.E. Wetzel in Wetzel et al. | Plant Ecology and Evolution | 152: 347, figs. 1AL-BH, 5A-H | 2019 |
| Achnanthidium crassum | (Hustedt) M.G. Potapova & K.C. Ponader | Diatom Research | 19: 38 | 2004 |
| Achnanthidium craterianum | G.C. Marquardt & C.E. Wetzel in Marquardt et al., | Cryptogamie, Algologie | 44: 116, figs. 5-8 | 2023 |
| Achnanthidium cryptocephalum | Nägeli ex Kützing | image | ||
| Achnanthidium cubanense | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 23, pl. 109: figs. 1-10 | 2007 |
| Achnanthidium danicum | Flögel | image | ||
| Achnanthidium daonense | (H. Lange-Bertalot) H. Lange-Bertalot, O. Monnier, & L. Ector in O. Monnier, H. Lange-Bertalot, L. Hoffmann, & L. Ector | Cryptogamie: Algologie | 28: 155 | 2007 |
| Achnanthidium deflexum | (C.W. Reimer) J.C. Kingston | Diatom Research | 15: 410 | 2000 |
| Achnanthidium delicatulum f. angustatum | Gutwinski | image | ||
| Achnanthidium delicatulum | Kützing | Kieselschal. Bacill.: | 75, pl. 3: fig. XXI | 1844 |
| Achnanthidium delicatulum | Kützing | image | ||
| Achnanthidium delmontii | F. Pérès, R. Le Cohu & A. Barthès in Pérès et al. | Fottea | 12: 190, figs. 1-82 | 2012 |
| Achnanthidium digitatum | E. Pinseel, P. Vanormelingen, P.B. Hamilton & B. Van de Vijver in Pinseel et al. | Eur. J. Phycol. | 52: 271, figs. 1-10, 18-27, 38-49 | 2017 |
| Achnanthidium dolomiticum | M. Cantonati & H. Lange-Bertalot | J. Phycol. | 42: 1185, figs. 1-3 | 2006 |
| Achnanthidium druartii | F. Rimet & A. Couté in Rimet et al. | Vie et Milieu | 60: 188, pls. I-III | 2010 |
| Achnanthidium dumlupinarii | C.N. Solak, A.Z. Wojtal, S. Blanco, Ł. Peszek & M. Rybak | Plant Ecology and Evolution | 155: 227, figs. 5-7 | 2022 |
| Achnanthidium duriense | M.H. Novais & L. Ector in Novais et al. | Phytotaxa | 224: 122, figs. 334-379, 395-402 | 2015 |
| Achnanthidium duthiei_('duthii') | (M.R. Sreenivasa) M.B. Edlund | J. Minnesota Acad. Sci. | 59: 12 | 1994 |
| Achnanthidium ecrinense | V. Vassal, D. Heudre, C.E. Wetzel & L. Tudesque | Nova Hedwigia | 117: 143 | 2023 |
| Achnanthidium ectorianum | G.C. Marquardt & C.E. Wetzel in Marquardt et al., | Cryptogamie, Algologie | 44: 114, figs. 1-4 | 2023 |
| Achnanthidium elineatum 'Lagerstedt' | image | |||
| Achnanthidium enigmaticum | E. Morales & K. Manoylov | Phytotaxa | 592: 60, figs. 43-65 | 2023 |
| Achnanthidium ennediense | (Compère) Compère & Van de Vijver | Algol. Studies | 136/137: 7 | 2011 |
| Achnanthidium epilithicum_('epilithica') | P. Yu, Q.-M. You & Q.-X. Wang in Yu et al. | Phytotaxa | 405: 154, figs. 130-231 | 2019 |
| Achnanthidium ertzii | B. Van de Vijver, & H. Lange-Bertalot in B. Van de Vijver et al. | Algol. Studies | 136/137: 200, figs. 26-47 | 2011 |
| Achnanthidium eutrophilum | (H. Lange-Bertalot) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 271 | 1999 |
| Achnanthidium exiguum | (Grunow) D.B. Czarnecki | Proc. Int. Diatom Symp. | 11 [Mem. Calif. Acad. Sci. 17]: 157 | 1994 |
| Achnanthidium exiguum var. constrictum | (Grunow) N.A. Andresen, E.F. Stoermer, & R.G. Kreis, Jr. | Diatom Research | 15: 413 | 2000 |
| Achnanthidium exiguum var. elliptica | (Hustedt) M.A. Harper in Harper et al. | Phylum Ochrophyta ...: | 162 | 2012 |
| Achnanthidium exiguum var. heterovalvum | (G. Krasske) D.B. Czarnecki | Proc. Int. Diatom Symp. | 11 [Mem. Calif. Acad. Sci. 17]: 157 | 1994 |
| Achnanthidium exile | (Kützing) Heiberg | Conspect. Diatom. Dan.: | 119 | 1863 |
| Achnanthidium exile | (Kützing) Heiberg | image | ||
| Achnanthidium flexellum | (Kützing) Brébisson ex Kützing | image | ||
| Achnanthidium flexellum f. minutum_('minuta') | A. Cleve | image | ||
| Achnanthidium flexuistriatum | C. Riaux-Gobin, P. Compère, & A. Witkowski | Vie et Milieu | 60: 161, figs. 13-22 | 2010 |
| Achnanthidium forte | I.W. Bishop & S.A. Spaulding in Bishop et al. | Beih. Nova Hedwigia | 147: 270, figs. 76-80, 306-308 | 2018 |
| Achnanthidium fulla | (J.R. Carter) M. Aboal in A. Witkowski (ed.), | Diat. Monogr. | 4: 143 | 2003 |
| Achnanthidium gladius | N.D. Tseplik, M.S. Kulikovskiy, A.M. Glushchenko & S.I. Genkal in Tseplik et al. | PhytoKeys | 187: 133, figs. 2, 3 | 2021 |
| Achnanthidium glyphos | C. Riaux-Gobin, P. Compère, & A. Witkowski | Vie et Milieu | 60: 161, figs. 25-37 | 2010 |
| Achnanthidium gracillimum | (Meister) Lange-Bertalot | Süsswasserflora Mitteleuropas. Bacillariophyceae | 4: 427 | 2004 |
| Achnanthidium groenlandicum | Cleve | image | ||
| Achnanthidium guizhouense_('guizhouensis') | P. Yu, Q.-M. You & J.P. Kociolek in Q. You et al. | Fottea | 19: 142, figs. 75-104, 125-140 | 2019 |
| Achnanthidium hauckianum | (Grunow) D.B. Czarnecki | J. Iowa Acad. Sci. | 101: 96 | 1995 |
| Achnanthidium hauckii | (Grunow) Comber | image | ||
| Achnanthidium helveticum | (Hustedt) O. Monnier, H. Lange-Bertalot, & L. Ector in O. Monnier, H. Lange-Bertalot, L. Hoffmann, & L. Ector | Cryptogamie: Algologie | 28: 155 | 2007 |
| Achnanthidium hoffmannii | B. Van de Vijver, L. Ector, A. Mertens & A. Jarlman in B. Van de Vijver et al. | Algol. Studies | 136/137: 195, figs. 1-17 | 2011 |
| Achnanthidium hungaricum | Grunow | Verh. K.K. Zool.-Bot. Ges. Wien | 13: 146, pl. 13: fig. 8a | 1863 |
| Achnanthidium indicatrix | (H. Lange-Bertalot & A. Steindorf) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 272 | 1999 |
| Achnanthidium indistinctum | B. Van de Vijver & K. Kopalová | European Journal of Taxonomy | 79: 4, figs. 2-28 | 2014 |
| Achnanthidium inflatum_('inflata') | (Kützing) Hutton | image | ||
| Achnanthidium initium | B. Karthick, J.C. Taylor & P.B. Hamilton | Fottea | 17: 66, figs. 1-46 | 2017 |
| Achnanthidium jackii | Rabenhorst | Alg. Eur. Dec. 101/102: | 1003 | 1861 |
| Achnanthidium japonicum | (H. Kobayasi) H. Kobayasi | Nova Hedwigia | 65: 156 | 1997 |
| Achnanthidium jiuzhaiense_('jiuzhaienis') | P. Yu, Q.-M. You & Q.-X. Wang in Yu et al. | Phytotaxa | 405: 149, figs. 2-129 | 2019 |
| Achnanthidium kangdingnese | P. Yu, Q.M. You & Q.X. Wang in Yu et al. | PhytoKeys | 204: 99, figs. 1-5 | 2022 |
| Achnanthidium kenyae | (Cholnoky) C. Cocquyt | Diatom Research | 22: 258 | 2007 |
| Achnanthidium koghisense | (G. Moser, H. Lange-Bertalot & D. Metzeltin) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 273 | 1999 |
| Achnanthidium koghisense f. angustifasciatum | (G. Moser, H. Lange-Bertalot & D. Metzeltin) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 273 | 1999 |
| Achnanthidium kranzii | (Lange-Bertalot) F.E. Round & L. Bukhtiyarova | image | ||
| Achnanthidium kranzii | (Lange-Bertalot) F.E. Round & L.N. Bukhtiyarova | Diatom Research | 11: 350 | 1996 |
| Achnanthidium kriegeri | (G. Krasske) P.B. Hamilton, D. Antoniades, & P.A. Siver in D. Antoniades, P.B. Hamilton, M.S.V. Douglas, & J.P. Smol | Iconogr. Diatomol. | 17: 20 | 2008 |
| Achnanthidium kryophilum_('kryophila') | (J.B. Petersen) L.N. Bukhtiyarova | Algologia | 5: 420 | 1995 |
| Achnanthidium lacuslustense | I. Jüttner, P.B. Hamilton, C.E. Wetzel, B. De Vijver, L. King, M.G. Kelly, D.M. Williams, & L. Ector | Cryptogamie, Algologie | 43: 158, figs. 17, 18 | 2022 |
| Achnanthidium lacustre | P. Yu, Q.M. You & J.P. Kociolek in Yu et al. | Fottea | 19: 34, figs. 1-20, 90-105 | 2019 |
| Achnanthidium lailae | B. Van de Vijver in R. Zidarova, B. Van de Vijver, G. Mataloni, K. Kopalová, & L. Nedbalová | Cryptogamie: Algol. | 30: 297, figs. 1-21 | 2009 |
| Achnanthidium lanceolatum | Brébisson ex Kützing | Bot. Zeitung | 4: 247 | 1846 |
| Achnanthidium lanceolatum | Brébisson ex Kützing | image | ||
| Achnanthidium lanceolatum f. minutissimum_('minutissima') | (Kützing) Tömösvary | image | ||
| Achnanthidium lanceolatum var. conspicuum_('conspicua') | A. Mayer | image | ||
| Achnanthidium lanceolatum var. dubium | (Grun.) Meister | image | ||
| Achnanthidium lanceolatum var. ellipticum | (Cleve) Meister | image | ||
| Achnanthidium lanceolatum var. genuinum_('genuina') | Mayer | image | ||
| Achnanthidium lanceolatum var. genuinum_(`genuina') | Mayer | Ber. Naturw. Ver. Regensburg | 14: 81, pl. III: figs. 42-44, 46, 47 | 1913 |
| Achnanthidium lanceolatum var. inflatum_('inflata') | Mayer | image | ||
| Achnanthidium lanceolatum var. minimum_('minima') | Mayer | image | ||
| Achnanthidium lanceolatum var. rhomboidale | Mayer | image | ||
| Achnanthidium lanceolatum var. rusticum | Steinecke | image | ||
| Achnanthidium lapidosum | (Krasske) H. Kobayasi in S. Mayama, M. Idei, K. Osada, & T. Nagumo | Diatom | 18: 89 | 2002 |
| Achnanthidium latecephalum | H. Kobayasi | Nova Hedwigia | 65: 152, figs. 19-40 | 1997 |
| Achnanthidium lauenburgianum | (Hustedt) O. Monnier, H. Lange-Bertalot, & L. Ector in O. Monnier, H. Lange-Bertalot, L. Hoffmann, & L. Ector | Cryptogamie: Algologie | 28: 155 | 2007 |
| Achnanthidium levanderi | (Hustedt) D.B. Czarnecki in Czarnecki & Edlund | Diatom Res. | 10: 208 | 1995 |
| Achnanthidium limosum_('limosua') | P. Yu, Q.-M. You & Q.-X. Wang in Yu et al. | Phytotaxa | 405: 158, figs. 232-292 | 2019 |
| Achnanthidium linannulum | B. Karthick, J.C. Taylor & P.B. Hamilton | Fottea | 17: 66, figs. 47-84 | 2017 |
| Achnanthidium lineare | W. Smith | Ann. & Mag. Nat. Hist., | ser. 2, 15: 8, pl. I: fig. 9 | 1855 |
| Achnanthidium linearioides | H. Lange-Bertalot | Süsswasserflora Mitteleuropas. Bacillariophyceae | 4: 427 | 2004 |
| Achnanthidium longissimum | P. Yu, Q-M. You & J.P. Kociolek in Yu et al. | Diatom Research | 33: 340, figs. 1-40 | 2019 |
| Achnanthidium lucectorii | E. Morales & K. Manoylov | Phytotaxa | 592: 3, figs. 1-42 | 2023 |
| Achnanthidium lusitanicum | M.H. Novais & M. Morais in Novais et al. | Phytotaxa | 224: 129, figs. 403-466, 467-477 | 2015 |
| Achnanthidium lyra | Schumann | image | ||
| Achnanthidium macrocephalum | (Hustedt) F.E. Round & L. Bukhtiyarova | image | ||
| Achnanthidium macrocephalum | (Hustedt) F.E. Round & L.N. Bukhtiyarova | Diatom Research | 11: 349 | 1996 |
| Achnanthidium mangelsdorffii | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 18: 24, pl. 109: figs. 11-23 | 2007 |
| Achnanthidium maritimo-antarcticum | B. Van de Vijver & K. Kopalová | European Journal of Taxonomy | 79: 6, figs. 29-49 | 2014 |
| Achnanthidium maximum | A. Cleve | Bih. K. Svenska Vet.-Akad. Handl. | 21{Afd. III, 2}: 24, figs. 22, 23 | 1895 |
| Achnanthidium mediolanceolatum | P. Yu, Q.-M. You & J.P. Kociolek in Q. You et al. | Fottea | 19: 139, figs. 1-32, 105-116 | 2019 |
| Achnanthidium metaffine | (H. Lange-Bertalot & A. Steindorf) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 272 | 1999 |
| Achnanthidium microcephalum | Kützing | Bacillarien: | 75, pl. 3: figs. XIII, XIX | 1844 |
| Achnanthidium microcephalum | Kützing | image | ||
| Achnanthidium minutissimum | (Kützing) D.B. Czarnecki | Proc. Int. Diatom Symp. | 11 [Mem. Calif. Acad. Sci. 17]: 157 | 1994 |
| Achnanthidium minutissimum | (Kützing) D.B. Czarnecki | image | ||
| Achnanthidium minutissimum f. inconspicuum | (Østrup) Compère & Riaux-Gobin | Syst. Geogr. Pls. | 79: 40 | 2009 |
| Achnanthidium minutissimum var. affine_('affinis') | (Grunow) L.N. Bukhtiyarova | Algologia | 5: 420 | 1995 |
| Achnanthidium minutissimum var. gracillimum_('gracillima') | (Meister) L.N. Bukhtiyarova | Algologia | 5: 420 | 1995 |
| Achnanthidium minutum | Cleve | image | ||
| Achnanthidium modestiforme | (H. Lange-Bertalot) B. Van de Vijver in B. Van de Vijver, Y. Frenot, & L. Beyens | Biblioth. Diatomol. | 46: 17 | 2002 |
| Achnanthidium nanum | (F. Meister) M.H. Novais & I. Jüttner in Novais et al. | Phytotaxa | 224: 121 | 2015 |
| Achnanthidium naviculoides | Reinsch | image | ||
| Achnanthidium neglectum | Schumann | image | ||
| Achnanthidium neocryptocephalum | M.H. Novais & B. Van de Vijver | Phytotaxa | 224: 116 | 2015 |
| Achnanthidium neotropicum | K.J. Krahn & C.E. Wetzel in Krahn et al. | Phytotaxa | 282: 91, figs. 2-88 | 2018 |
| Achnanthidium nodosum | (A. Cleve) N.D. Tseplik & D.A. Chudaev | Novosti sistematiki nizshikh rastenii | 54: 46 | 2020 |
| Achnanthidium nollii | (O. Bock & W. Bock) Lange-Bertalot in Kusber et al. | Notulae algarum | 209: 1 | 2021 |
| Achnanthidium obliquum_('obliqua') | Mereschkowsky | image | ||
| Achnanthidium obtusum | Schumann | image | ||
| Achnanthidium otrantinum | Rabenhorst | image | ||
| Achnanthidium ovale | M. Miao & B.-H. Kim in Miao et al. | Diversity | 12{285}: 5, figs. 2-4 | 2020 |
| Achnanthidium ovatum | T. Watanabe & Tuji in Watanabe et al. | Diatom | 24: 34, figs. 2-25 | 2008 |
| Achnanthidium palmeti | G. Gassiole, R. Le Cohu & M. Coste | Phytotaxa | 119: 22, figs. 1-27 | 2013 |
| Achnanthidium parallelum | J.R. Carter ex I. Jüttner, D.M. Williams, L. Ector & C.E. Wetzel in Jüttner et al. | Botany Letters | 167: 64, figs. 1-32 | 2019 |
| Achnanthidium parvicapitatum | L.F. Costa, L. Ector & C.E. Wetzel in Costa et al., | Phytotaxa | 575: 201, figs. 100-116 | 2022 |
| Achnanthidium parvulum | Q.-M. You, P. Yu, & J.P. Kociolek in Q. You et al. | Fottea | 19: 140, figs. 33-74, 117-124 | 2019 |
| Achnanthidium paulistanum | L.F. Costa & D. Bicudo in Costa et al., | Phytotaxa | 575: 203, figs. 117-143 | 2022 |
| Achnanthidium pavense | V. Vassal, D. Heudre, C.E. Wetzel & L. Tudesque | Nova Hedwigia | 117: 143 | 2023 |
| Achnanthidium peetersianum | C.E. Wetzel, I. Jüttner & L. Ector in Wetzel et al. | Plant Ecology and Evolution | 152: 345, figs. 1N-AK, 3A-J | 2019 |
| Achnanthidium peridotiticum | (G. Moser, H. Lange-Bertalot & D. Metzeltin) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 273 | 1999 |
| Achnanthidium peruvianum | E. Morales & L. Ector in E.A. Morales et al. | Algol. Studies | 136/137: 121, figs. 211-224, 285-290 | 2011 |
| Achnanthidium petersenii | (Hustedt) C.E. Wetzel, L. Ector, D.M. Williams & I. Jüttner in Jüttner et al. | Botany Letters | 167: 66 | 2019 |
| Achnanthidium pfisteri | H. Lange-Bertalot in M. Werum & H. Lange-Bertalot | Iconogr. Diatomol. | 13: 126, pl. 20 | 2004 |
| Achnanthidium pirogueanum | (R. Maillard ex H. Lange-Bertalot & A. Steindorf) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 273 | 1999 |
| Achnanthidium polonicum | B. Van de Vijver, A. Wojtal, E. Morales & L. Ector in A. Wojtal et al. | Algol. Studies | 136/137: 223, figs. 131-154 | 2011 |
| Achnanthidium pseudochamaepinnularia | C. Riaux-Gobin, P. Compère, & A. Witkowski | Vie et Milieu | 60: 166, figs. 38-47 | 2010 |
| Achnanthidium pseudoconspicuum | (Foged) I. Juttner & E.J. Cox | Diatom Research | 26: 22 | 2011 |
| Achnanthidium pseudoconspicuum var. yomense_('yomensis') | E. Yana & S. Mayama | Phycol. Research | 63: 240, figs. 1-27 | 2015 |
| Achnanthidium pseudodelicatissimum | C. Riaux-Gobin, P. Compère, & A. Witkowski | Vie et Milieu | 60: 159, figs. 1-12 | 2010 |
| Achnanthidium pseudolineare | B. Van de Vijver, M.E. Novais & L. Ector in B. Van de Vijver et al. | Algol. Studies | 136/137: 186, figs. 208-256 | 2011 |
| Achnanthidium pusillum | (Grunow) D.B. Czarnecki in Czarnecki & Edlund | Diatom Res. | 10: 208 | 1995 |
| Achnanthidium pyrenaicum | (Hustedt) H. Kobayasi | Nova Hedwigia | 65: 148 | 1997 |
| Achnanthidium qingxiense | Q.M. You, P. Yu, & Q.X. Wang in Yu et al. | PhytoKeys | 191: 18, figs. 1AE-AS, 6-9 | 2022 |
| Achnanthidium reimeri | (K.E. Camburn) K.C. Ponader & M.G. Potapova | Limnologica | 37: 235 | 2007 |
| Achnanthidium ritae | L.F. Costa in Costa et al., | Phytotaxa | 575: 207, figs. 194-214 | 2022 |
| Achnanthidium rivulare | M.G. Potapova & K.C. Ponader | Diatom Research | 19: 36, figs. 1-18, 28-43 | 2004 |
| Achnanthidium rosenstockii | (H. Lange-Bertalot) H. Lange-Bertalot | Süsswasserflora Mitteleuropas. Bacillariophyceae | 4: 427 | 2004 |
| Achnanthidium rostratum_('rostrata') "Østrup" | image | |||
| Achnanthidium rostropyrenaicum | I. Jüttner & E.J. Cox in I. Jüttner, J. Chimonides & E.J. Cox | Algol. Studies | 136/137: 49, figs. 2-13 | 2011 |
| Achnanthidium saprophilum_('saprophila') | (H. Kobayasi & S. Mayama) F.E. Round & L. Bukhtiyarova | image | ||
| Achnanthidium saprophilum_(`saprophila') | (H. Kobayasi & S. Mayama) F.E. Round & L.N. Bukhtiyarova | Diatom Research | 11: 349 | 1996 |
| Achnanthidium scalariforme | C. Riaux-Gobin, P. Compère, & A. Witkowski | Vie et Milieu | 60: 170, figs. 48-53 | 2010 |
| Achnanthidium sehuencoense_('sehuencoensis') | E. Morales in Morales, Fernández, & Kociolek | Acta Bot. Croat. | 68: 273, figs. 8-14, 21-26 | 2009 |
| Achnanthidium semiapertum_(`semiaperta') | (P. Guermeur) N.A. Andresen, E.F. Stoermer, & R.G. Kreis, Jr. | Diatom Research | 15: 413 | 2000 |
| Achnanthidium sibiricum | M. Kulikovskiy, H. Lange-Bertalot, A. Witkowski & G.K. Khursevich | Algol. Studies | 136/137: 79, figs. 1-26 | 2011 |
| Achnanthidium sichuanense | Y.L. Wang & Q.M. You in Q.M. You, K. Zhao, Y.L. Wang, P. Yu, J.P. Kociolek, W.T. Pang, & Q.X. Wang | Phytotaxa | 479: 258, figs. 1-32 | 2021 |
| Achnanthidium sieminskae | A. Witkowski, M. Kulikovskiy & C. Riaux-Gobin in Wołowski et al. (eds) | Current Advances in Algal Taxonomy: | p. 65, figs. 1-40 | 2012 |
| Achnanthidium sinense | Bing Liu & S. Blanco in Liu et al. | Phytotaxa | 284: 195, figs. 2-41 | 2016 |
| Achnanthidium standeri | (Cholnoky) J.C. Taylor, E. Morales & L. Ector | Algol. Studies | 136/137: 155 | 2011 |
| Achnanthidium straubianum | (H. Lange-Bertalot) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 273 | 1999 |
| Achnanthidium strictum | E. Reichardt | Iconogr. Diatomol. | 13: 426, pl. 3: figs. 1-16 | 2004 |
| Achnanthidium subatomoides | (Hustedt) O. Monnier, H. Lange-Bertalot, & L. Ector in O. Monnier, H. Lange-Bertalot, L. Hoffmann, & L. Ector | Cryptogamie: Algologie | 28: 155 | 2007 |
| Achnanthidium subatomus | (Hustedt) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 273 | 1999 |
| Achnanthidium subhudsonis | (Hustedt) H. Kobayasi in Kobayasi et al. | Atlas Japanese Diatoms | 1: 129 | 2006 |
| Achnanthidium subhudsonis var. kraeuselii | (Cholnoky) M. Cantonati & H. Lange-Bertalot in Kusber et al. | Phytotaxa | 328: 90 | 2017 |
| Achnanthidium subhungaricum | Gutwinski | image | ||
| Achnanthidium sublanceolatum | P. Yu, Q.M. You & J.P. Kociolek in Yu et al. | Fottea | 19: 34, figs. 21-55, 106-123 | 2019 |
| Achnanthidium sublineare | B. Van de Vijver, A. Jarlman & L. Ector in B. Van de Vijver et al. | Algol. Studies | 136/137: 179, figs. 183-207 | 2011 |
| Achnanthidium subsalsum | (J.B. Petersen) M. Aboal in A. Witkowski (ed.), | Diat. Monogr. | 4: 147 | 2003 |
| Achnanthidium subsessile | (Kützing) Heiberg | image | ||
| Achnanthidium subsessile var. tumidulum 'Grunow' | image | |||
| Achnanthidium subtilissimum | P. Yu, Q.-M. You & Q.-X. Wang in Yu et al. | Phytotaxa | 405: 161, figs. 293-355 | 2019 |
| Achnanthidium taiaense | (J.R. Carter & Denny) J.C. Taylor, E. Morales & L. Ector | Algol. Studies | 136/137: 160 | 2011 |
| Achnanthidium taipingense_('taipingensis') | P. Yu, Q.M. You & J.P. Kociolek in Yu et al. | Fottea | 19: 35, figs. 56-89, 124-146 | 2019 |
| Achnanthidium tepidaricola | B. Van de Vijver, & M. de Hann in B. Van de Vijver et al. | Algol. Studies | 136/137: 201, figs. 48-66 | 2011 |
| Achnanthidium thermale | Rabenhorst | Fl. Eur. Alg. | I: 107 | 1864 |
| Achnanthidium thienemannii | (Hustedt) H. Lange-Bertalot | Süsswasserflora Mitteleuropas. Bacillariophyceae | 4: 427 | 2004 |
| Achnanthidium tibeticum | Y. Liu & J.P. Kociolek in Ge et al. | Phytotaxa | 538: 271, figs. 1-32 | 2022 |
| Achnanthidium tinea | N.D. Tseplik, M.S. Kulikovskiy, J.P. Kociolek & Y.I. Maltsev in Tseplik et al. | PhytoKeys | 174: 151, figs. 1-3 | 2021 |
| Achnanthidium tirolense | I. Jüttner, P.B. Hamilton, C.E. Wetzel, B. De Vijver, L. King, M.G. Kelly, D.M. Williams, & L. Ector | Cryptogamie, Algologie | 43: 156, figs. 15, 16 | 2022 |
| Achnanthidium trinode | Ralfs in Pritchard | Hist. Inf. ed. 4: | 872 | 1861 |
| Achnanthidium tropicocatenatum | G.C. Marquardt, C.E. Wetzel & L. Ector in Marquardt et al. | Plant Ecology and Evolution | 150: 318, figs. 3-5 | 2017 |
| Achnanthidium undulatum | Schumann | image | ||
| Achnanthidium vandevijveri | L.F. Costa, L. Ector & C.E. Wetzel in Costa et al., | Phytotaxa | 575: 210, figs. 276-316 | 2022 |
| Achnanthidium woltereckii | (Hustedt) H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconogr. Diatomol. | 6: 274 | 1999 |
| Achnanthidium zelleri | Kirchner | image | ||
| Achnanthidium zhakovschikovae_(`zhakovschikovii') | M. Potapova | Nova Hedwigia | 82: 400, figs. 1-9, 28-33 | 2006 |
| PSEUDACHNANTHIDIUM | C. Riaux-Gobin in Riaux-Gobin & Witkowski | Cryptogamie, Algologie | 36: 294 | 2015 |
| Pseudachnanthidium megapteropsis | C. Riaux-Gobin & A. Witkowski | Cryptogamie, Algologie | 36: 294. figs. 2-15 | 2015 |
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