| Name | Author | Source | Citation | Year |
|---|
| ACHNANTHES | Bory (cont.) | image |
| ACHNANTHES | Bory | image |
| ACHNANTHES sect. | ACHNANTHES Brun | image |
| ACHNANTHES sect. | ACHNANTHES Brun | image |
| ACHNANTHES sect. | EUACHNANTHES Schütt | image |
| 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 |
| ACHNANTHES subg. | MICRONEIS (Cleve) Cleve-Euler | image |
| Achnanthes | (taeniata var.) hyperborea Grunow | image |
| Achnanthes aapajaervensis | Cleve-Euler | image |
| Achnanthes abundans | Manguin in P. Bourrelly & Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 19, pl. I: fig. 10 | 1955 |
| Achnanthes abundans var. elliptica | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 19, pl. I: fig. 11 | 1955 |
| Achnanthes abundans var. elliptica | Manguin | image |
| Achnanthes acares | M.H. Hohn & J. Hellerman | Trans. Amer. Microscop. Soc. | 82: 273, pl. I: figs. 27, 28 | 1963 |
| Achnanthes acidoclinata | H. Lange-Bertalot | Iconogr. Diatomol. | 2: 22, pl. 21: figs. 22-24; pl. 113: figs. 1-7 | 1996 |
| Achnanthes acus | R. Simonsen in Hinz, Simonsen, & Crawford | Diatom Res. | 27: 81 | 2012 |
| Achnanthes acus | R. Simonsen | Kieler Meeresf. | 16: 127, pl. 1: figs. 8, 9 | 1960 |
| Achnanthes acus | Simonsen | image |
| Achnanthes acuta | Frenguelli | image |
| Achnanthes adamantiformis | (R. Archibald) R. Archibald | image |
| Achnanthes adamsii | Cholnoky | image |
| Achnanthes adnata | Bory | Dict. Class. Hist. Nat. | 1: 79, pl. Arthrodiées: fig. 2 | 1822 |
| Achnanthes affinis | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 20 | 1880 |
| Achnanthes affinis var. bistriata | Skvortzov | image |
| Achnanthes affinis var. jamalinensis | (Grunow) Cleve | image |
| Achnanthes affinis var. minuta | Skvortzov | image |
| Achnanthes africana | Woodhead & Tweed | image |
| Achnanthes agglutinata | Grunow | image |
| Achnanthes alaskana | Patrick & Freese | image |
| Achnanthes alpestris | (Brun) H. Lange-Bertalot & D. Metzeltin | Iconogr. Diatomol. | 2: 24 | 1996 |
| Achnanthes altaica | (V.S. Poretzky) Cleve-Euler | K. Svenska Vet.-Akad. Handl., ser. 4, | 4{5}: 48 | 1953 |
| Achnanthes altaica var. minor | R.J. Flower & V.J. Jones | Diatom Res. | 4: 233, figs. 10-14, 70-74 | 1989 |
| Achnanthes alteragracillima | Lange-Bertalot | Biblioth. Diatomol. | 27: 2 | 1993 |
| Achnanthes ambigua | Zimmermann | image |
| Achnanthes americana | Cleve | image |
| Achnanthes amoena | Hustedt | Bot. Not. | 1952: 386, figs. 66, 67 | 1952 |
| Achnanthes amphicephala | Hustedt | Berichte der Deutschen Botanischen Gesellschaft | 56: 555, pl. XXV: figs. 3, 4 | 1939 |
| Achnanthes anastasiae | I. Kaczmarska | Acta Palaeobotanica | 25: 38, pl. I: fig. 47; pl. II: fig. 3-5 | 1985 |
| Achnanthes anceps | Cleve-Euler | image |
| Achnanthes andicola | (Cleve) Hustedt | image |
| Achnanthes andicola var. elongata | D. Gonzalves & Gandhi | image |
| Achnanthes angustata | Greville | Quart. J. Microscop. Sci. | 7: 163, pl. VIII: fig. 9 | 1859 |
| Achnanthes angustissima | Jasnitsky | image |
| Achnanthes antarctica | M. Peragallo | image |
| Achnanthes antiqua | Lauby | image |
| Achnanthes aperta | J.R. Carter in J.R. Carter & A.E. Bailey-Watts | Nova Hedwigia | 33: 529, pl. 2: fig. 8; pl. 24: fig. 5 | 1981 |
| Achnanthes apiculata | (Greville) C. Riaux-Gobin, P. Compère, F. Hinz & L. Ector | Phytotaxa | 227: 111 | 2015 |
| Achnanthes araucaniana | Frenguelli | Rev. Mus. La Plata | 34: 347, pl. I: figs. 1-3 | 1934 |
| Achnanthes archibaldiana | H. Lange-Bertalot in H. Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 23, pl. 64: figs. 7-16; pl. 66: figs. 8-11 | 1989 |
| Achnanthes archibaldiana | Lange-Bertalot | image |
| Achnanthes arctica | (Cleve) Cleve-Euler | image |
| Achnanthes arcuata | (Lyngbye) Kützing | image |
| Achnanthes arcuata | Cleve-Euler | image |
| Achnanthes arcus | Hustedt | Internat. Rev. Ges. Hydrobiol. | 42: 38, figs. 44-48 | 1942 |
| Achnanthes arenaria | Amossé | image |
| Achnanthes arenicola | Bailey | image |
| Achnanthes aretasii | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 19, pl. II: fig. 16 | 1955 |
| Achnanthes arguta | Hustedt ex R. Simonsen | Atlas & Cat. Diat. Types Hustedt: | 230, pl. 335: figs. 26-34 | 1987 |
| Achnanthes armillaris | (O.F. Müller) M.D. Guiry | Notulae algarum | 92: 1 | 2019 |
| Achnanthes arstasii | Manguin | image |
| Achnanthes astridiae_('astridii') | Van Landingham | image |
| Achnanthes asymbasia | Hohn | image |
| Achnanthes asymetrica | Patrick | image |
| Achnanthes atacamae | Hustedt | image |
| Achnanthes atalanta | J.R. Carter | Nova Hedwigia | 11: 444, pl. 60(1): figs. 15, 16, 19, 20 | 1966 |
| Achnanthes athenais | Pantocsek | image |
| Achnanthes athenais var. minor | Pantocsek | image |
| Achnanthes atomus | Hustedt | Arch. Hydrobiol. Suppl. | 15: 194, pl. XIII: figs. 33-36 | 1937 |
| Achnanthes atomus var. congolensis | Hustedt | image |
| Achnanthes aubertii | Héribaud | image |
| Achnanthes aueri | Krasske | Ann. Acad. Sci. Fenn., Ser. A, Biol. | 14: 77, fig. 3 | 1949 |
| Achnanthes australis | Ehrenberg | image |
| Achnanthes austriaca f. intermedia | Manguin | image |
| Achnanthes austriaca | Hustedt | Int. Rev. Hydrobiol. u. Hydrogr. | 10: 233, pl. III: figs. 6, 7 | 1922 |
| Achnanthes austriaca var. capensis | Cholnoky | image |
| Achnanthes austriaca var. dracomontana | Cholnoky | image |
| Achnanthes austriaca var. helvetica | Hustedt | Rabenhorst's Krypt.-Fl. Deutschl., 2.Aufl., | 7{2}: 385, fig. 831 g-k | 1933 |
| Achnanthes austriaca var. parallela | Krasske | image |
| Achnanthes austriaca var. tatrensis | K. Starmach | Fragm. Floristic. Geobot. | 19: 499, fig. 25, pl. 1: figs. 19-22 | 1973 |
| Achnanthes austriaca var. ventricosa | Krasske | image |
| Achnanthes baccata | (Leuduger-Fortmorel) Cleve | image |
| Achnanthes baccillarioides | Bory | image |
| Achnanthes bacillaris | Ehrenberg | image |
| Achnanthes bacillum | M. Peragallo | image |
| Achnanthes bahusiensis | (Grunow) Lange-Bertalot in H. Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 25 | 1989 |
| Achnanthes baicalensis | Skvortzov & K.I. Meyer | Trudy Sungar. Rech. Biol. Stants. [Obshch. Izuch. Man'chzh. Kraya, Kharbin] | 1{5}: 10, pl. I: fig. 21 | 1928 |
| Achnanthes baicalensis | Skvortzov & Meyer | image |
| Achnanthes baicaliana | Frenguelli | Rev. Mus. La Plata, n.s. Bot. | 8: 68 | 1953 |
| Achnanthes baicaliana var. notata | Frenguelli | image |
| Achnanthes baldjickii subsp. lorenziana | (Grunow) Ross | image |
| Achnanthes baldjickii var. croatica | Jurilj | image |
| Achnanthes baldjickii var. subquadrata | Pantocsek | image |
| Achnanthes baldjickii_('Baldjikii') | (Brightw.) Grunow | image |
| Achnanthes baltalensis | H.P. Gandhi ex Karthick in Guiry et al. | Notulae algarum | 133: 1, description and illustration in Gandhi (1998: 284, pl. 3: fig. 1) | 2020 |
| Achnanthes baltalensis | H.P. Gandhi | Fresh-water Diatoms Central Gujarat: | 284, pl. 1: figs. 1-3; pl. 3: figs. 1-4 | 1998 |
| Achnanthes baltalensis var. ovalis | H.P. Gandhi ex Karthick in Guiry et al. | Notulae algarum | 133: 1, description and illustration in Gandhi (1998: 286, pl. 1: figs. 4-6; pl. 3: figs. 5-7) | 2020 |
| Achnanthes baltalensis var. ovalis | H.P. Gandhi | Fresh-water Diatoms Central Gujarat: | 286, pl. 1: figs. 4-6; pl. 3: figs. 5-7 | 1998 |
| Achnanthes bavarica | Ehrenberg | image |
| Achnanthes bavarica | Ehrenberg | image |
| Achnanthes bengalensis | Grunow | image |
| Achnanthes bengalensis var. subventricosa | Grunow | image |
| Achnanthes bernieri | E. Manguin ex Kociolek & Reviers | Cryptogamie: Algologie | 17: 177 | 1996 |
| Achnanthes bernieri_('bernierii') | E. Manguin | Rev. Alg. n.s. | 5: 271, pl. I(26): figs. 18, 19 | 1961 |
| Achnanthes bernieri_('bernierii') | Manguin | image |
| Achnanthes biasolettiana f. minuta | Grunow | image |
| Achnanthes biasolettiana | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 22 (illustr. in Van Heurck, Syn. Diat. Belgique: pl. XXVII: figs. 27, 28. 1880) | 1880 |
| Achnanthes biasolettiana | Grunow in Van Heurck | Syn. Diat. Belgique: | pl. XXVII: figs. 27, 28 | 1880 |
| Achnanthes biasolettiana var. fossilis | Frenguelli | Rev. Mus. La Plata, n.s. 1. Secc. Paleontología | 1: 19, 31, pl. I: figs. 37, 38 | 1936 |
| Achnanthes biasolettiana var. jackii | (Rabenhorst) Cleve-Euler | image |
| Achnanthes biasolettiana var. subatomus | Lange-Bertalot in H. Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 28, pl. 57: fig. 8; pl. 59: figs. 1-11' | 1989 |
| Achnanthes biasolettiana var. sublinearis | Cleve | image |
| Achnanthes biasolettiana var. thienemannii | (Hustedt) Lange-Bertalot in H. Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 29 | 1989 |
| Achnanthes bicapitata | Hustedt | Bot. Not. | 1952: 386, figs. 68-71 | 1952 |
| Achnanthes biceps | Hustedt | image |
| Achnanthes biconfusa | S.L. VanLandingham | Cat. Diat. | 1: 10, 67 | 1967 |
| Achnanthes biconfusa | Van Landingham | image |
| Achnanthes bigibba | Heiden & Kolbe | image |
| Achnanthes bijuga | Turpin | image |
| Achnanthes bilunulata | Turpin | image |
| Achnanthes binodis | Ehrenberg | image |
| Achnanthes bioretii | H. Germain | image |
| Achnanthes bioretii_('bioreti') | H. Germain | Bull. Soc. Bot. France | 104(suppl.): 85, fig. 21 | 1958 |
| Achnanthes biporoma | M.H. Hohn & J. Hellerman | Trans. Amer. Microscop. Soc. | 82: 273, pl. II: figs. 5, 6 | 1963 |
| Achnanthes biporoma | M.H. Hohn & J. Hellerman verso | image |
| Achnanthes birugula | Hohn | image |
| Achnanthes bistriata | Skvortzov & Meyer | image |
| Achnanthes blancheana | R. Maillard ex H. Lange-Bertalot & A. Steindorf in G. Moser, A. Steindorf, & H. Lange-Bertalot | Biblioth. Diatomol. | 32: 33, pl. 1: figs. 1-6 | 1995 |
| Achnanthes blancheana | R. Maillard | Cah. O.R.S.T.O.M., Sér. Hydrobiol. | 12: 149, pl. I: fig. 11 | 1979 |
| Achnanthes bongrainii | (Perag.) Mann | image |
| Achnanthes bongrainii var. parallela_(`paralela') | (M. Peragallo) J. Frenguelli & H.A. Orlando | Publ. Inst. Antárt. Argent. | 5: 79 | 1958 |
| Achnanthes borealis | A. Cleve | image |
| Achnanthes borneolanceolata | Lange-Bertalot | image |
| Achnanthes borneolanceolata | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 30, pl. 85: figs. 11-14; pl. 91: fig. 2 | 1989 |
| Achnanthes bottnica | (Cleve) Cleve | K. Svenska Vet.-Akad. Handl., ser. 4, | 27{3}: 186 | 1895 |
| Achnanthes boudoui | D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 18, pl. 69: figs. 9-14; pl. 70: figs. 1, 4 | 1998 |
| Achnanthes bourginii | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 19, pl. II: fig. 20 | 1955 |
| Achnanthes bourginii | Manguin | image |
| Achnanthes boyei | Østrup | Bot. Iceland | 2: 41, pl. IV: fig. 60 | 1918 |
| Achnanthes boyei | Ostrup | image |
| Achnanthes boyeri | Mackay | image |
| Achnanthes brachypus | Montagne | image |
| Achnanthes brasiliensis | Ehrenberg | image |
| Achnanthes breenii | Archibald | image |
| Achnanthes bremeyeri | H. Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 31, pl. 76: figs. 11, 12 | 1989 |
| Achnanthes bremeyeri | Lange-Bertalot | image |
| Achnanthes brevicostata | (Hustedt) Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 33 | 1989 |
| Achnanthes brevicostata | (Hustedt) Lange-Bertalot | image |
| Achnanthes brevipes | C. Agardh | Syst. Alg.: | 1 | 1824 |
| Achnanthes brevipes f. gaussii | Heiden & Kolbe | image |
| Achnanthes brevipes f. rostrata | Karaeva | image |
| Achnanthes brevipes f. trigona | Ostrup | image |
| Achnanthes brevipes | J. Agardh | image |
| Achnanthes brevipes var. angustata | (Greville) Cleve | K. Svenska Vet.-Akad. Handl., ser. 4, | 27{3}: 194 | 1895 |
| Achnanthes brevipes var. arctica | (Cleve) Ko-Bayashi | image |
| Achnanthes brevipes var. bacillaris | Peragallo | image |
| Achnanthes brevipes var. capensis | (Kützing) Grunow | image |
| Achnanthes brevipes var. capensis | Cleve | image |
| Achnanthes brevipes var. constricta | Grunow | image |
| Achnanthes brevipes var. contracts | Grunow | image |
| Achnanthes brevipes var. fragilariiformis_('fragilariaeformis') | Kützing | Linnaea | 8: 575 | 1834 |
| Achnanthes brevipes var. fragilariiformis_('fragilariaeformis') | Kützing | image |
| Achnanthes brevipes var. indica | (Brun) Cleve | image |
| Achnanthes brevipes var. intermedia | (Kützing) Cleve | Kongl. Svenska Vetensk.-Akad. Handl, ser. 4, | 27{3}: 193 | 1895 |
| Achnanthes brevipes var. intermedia | (Kützing) Cleve | image |
| Achnanthes brevipes var. japonica | Skvortzov | image |
| Achnanthes brevipes var. japonica | Skvortzov | image |
| Achnanthes brevipes var. lata | Cleve-Euler | image |
| Achnanthes brevipes var. leudugeri | (Tempère & Brun) Cleve | image |
| Achnanthes brevipes var. linearis | Ostrup | image |
| Achnanthes brevipes var. marginata | Cleve | image |
| Achnanthes brevipes var. marina | Kützing | image |
| Achnanthes brevipes var. neogenica | Milovanova | image |
| Achnanthes brevipes var. parvula | (Kützing) Cleve | image |
| Achnanthes brevipes var. penniformis | (Greville) Cleve | K. Svenska Vet.-Akad. Handl., ser. 4, | 27{3}: 194 | 1895 |
| Achnanthes brevipes var. penniformis_('pennaeformis') | (Greville) Cleve | image |
| Achnanthes brevipes var. salina | Kützing | Linnaea | 8: 575, pl. 16: fig. 57 | 1834 |
| Achnanthes brevipes var. salina | Kützing | image |
| Achnanthes brevipes var. salinarum | C. Agardh | image |
| Achnanthes brevipes var. seriata | (C. Agardh) Cleve | image |
| Achnanthes brevipes var. subcrenulata | (Cleve) Cleve | image |
| Achnanthes brevipes var. tumida | Hustedt | image |
| Achnanthes brevipes var. typica | Cleve | image |
| Achnanthes breweri | Foged | image |
| Achnanthes broenlundensis | N. Foged | Meddel. Gronland | 128{7}: 39, pl. IV: figs. 10, 11 | 1955 |
| Achnanthes broonlundensis | Foged | image |
| Achnanthes bruunii | Foged | image |
| Achnanthes buccula | Cholnoky | Beih. Nova Hedwigia | 21: 6, pl. 1: figs. 1-3 | 1966 |
| Achnanthes buriata | E.A. Molinari, M.D. Guiry & D. Ponce in Ponce Quintana et al. | Notulae algarum | 178: 1 | 2021 |
| Achnanthes butterfassiana | H. Lange-Bertalot in H. Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 34, pl. 71: figs. 15-29; pl. 72: figs. 2-5 | 1989 |
| Achnanthes butterfassiana | Lange-Bertalot | image |
| Achnanthes calamae | Frenguelli | Rev. Chilena Hist. Nat. | 34: 199, fig. 35-2 | 1930 |
| Achnanthes calcar | Cleve | Acta Soc. Fauna et Flora Fenn. | 8{2}: 51, pl. III: fig. 8 | 1891 |
| Achnanthes calcar var. australis | Playfair | image |
| Achnanthes calcar var. pulcherrima | Playfair | image |
| Achnanthes calcaroides | Foged | image |
| Achnanthes caledonica | H. Lange-Bertalot in H. Lange-Bertalot & G. Moser | Biblioth. Diatomol. | 29: 95 | 1994 |
| Achnanthes campechiana | Hustedt | Bot. Not. | 1952: 389, figs. 87-90 | 1952 |
| Achnanthes campylopus | Mantagna | image |
| Achnanthes capensis | Kützing | image |
| Achnanthes capensis var. multiarticulata | Kützing | image |
| Achnanthes capitata | Erlandsson | image |
| Achnanthes capitatolineata | No Author, inval. | image |
| Achnanthes capitellata | (A. Cleve) Cleve-Euler | image |
| Achnanthes carissima | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 36, pl. 36: figs. 32-34; pl. 38: figs. 1-4 | 1989 |
| Achnanthes carmichaelii | Greville in W.J. Hooker | Brit. Fl. | 2{1}: 404 | 1833 |
| Achnanthes cassida | J.R. Carter | image |
| Achnanthes cataractarum | (Hustedt) Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 37 | 1989 |
| Achnanthes catenata | Bíly & Marvan | image |
| Achnanthes catenata | J. Bílý & Marvan | Preslia | 31: 35, pl. VIII | 1959 |
| Achnanthes centrafricana | Fusey | Cahiers Maboke | 4: 61, pl. II: fig. 25 (in Fusey, Cahiers Maboke 2. 1964) | 1966 |
| Achnanthes ceramii | Hendey | image |
| Achnanthes charcotii | M. Peragallo | image |
| Achnanthes chilensis | Hustedt | Arch. Hydrobiol. | 18: 238, pl. VII: figs. 3, 4 | 1927 |
| Achnanthes chilensis var. subaequalis | Reimer | image |
| Achnanthes chlidanos | M.H. Hohn & J. Hellerman | Transact. Amer. Micr. Soc. | 82: 273, fig. 2: figs. 1, 2 | 1963 |
| Achnanthes cincta | G.W. Andrews | image |
| Achnanthes clara | Cleve-Euler | image |
| Achnanthes clavata | Pantocsek | image |
| Achnanthes clevei f. rostrata | Hustedt | Arch. Hydrobiol. | 40: 908, pl. XXXIX: figs. 38, 39 | 1945 |
| Achnanthes clevei | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 21 | 1880 |
| Achnanthes clevei var. balcanica f. rostrata | Hustedt | image |
| Achnanthes clevei var. balcanica | Hustedt | Arch. Hydrobiol. | 40: 908, pl. XXXIX: figs. 34-37 | 1945 |
| Achnanthes clevei var. bottnica | Cleve | Acta Soc. Fauna et Flora Fenn. | 8{2}: 52, pl. III: 4, 5 | 1891 |
| Achnanthes clevei var. nipponica | Skvortzov | image |
| Achnanthes clevei var. rostrata | Hustedt in Pascher | Süssw.-Fl. | 10, 2. Aufl.: 204, fig. 295 | 1930 |
| Achnanthes coarctata | (Brébisson ex W. Smith) Grunow in Van Heurck | Syn. Diat. Belgique: | expl. pl. XXVI: fig. 17 | 1880 |
| Achnanthes coarctata | (Brebisson ex W. Smith) Grunow | image |
| Achnanthes coarctata | (Brebisson) Grunow | image |
| Achnanthes coarctata f. antarctica | M. Peragallo | image |
| Achnanthes coarctata f. falklandica | Carlson | image |
| Achnanthes coarctata var. constricta | Krasske | image |
| Achnanthes coarctata var. distorta | M. Peragallo | image |
| Achnanthes coarctata var. elineata | (Lagerstedt) O. Müller | image |
| Achnanthes coarctata var. elliptica | Krasske | image |
| Achnanthes coarctata var. parallels | Vankataraman | image |
| Achnanthes coarctata var. petri-pazmanyii Éber | | image |
| Achnanthes coarctata var. sinaensis | Hustedt | Hydrobiologia | 2: 43, pl. 1: figs. 6, 7 | 1949 |
| Achnanthes cocconeiformis | A. Mann | image |
| Achnanthes cocconeioides | Riznyk | image |
| Achnanthes cogitata | R. Archibald | image |
| Achnanthes cognita | R. Simonsen | Atlas Cat. Diat. Types Fr. Hustedt: | 342 | 1987 |
| Achnanthes compacta | A. Mann | image |
| Achnanthes confusa | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 20, pl. I: fig. 12 | 1955 |
| Achnanthes confusa | Manguin | image |
| Achnanthes confusa var. atomoides | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 20, pl. I: fig. 13 | 1955 |
| Achnanthes confusa var. atomoides | Manguin | image |
| Achnanthes congolensis | Hustedt | image |
| Achnanthes conspicua | A. Mayer | Kryptog. Forsch. | 1: 198, 212, pl. VI: figs. 9, 10 | 1919 |
| Achnanthes conspicua | Mayer | image |
| Achnanthes conspicua var. brevistriata | Hustedt | image |
| Achnanthes conspicuoides | Foged | image |
| Achnanthes contrarea | H. Lange-Bertalot & A. Steindorf in G. Moser, A. Steindorf, & H. Lange-Bertalot | Biblioth. Diatomol. | 32: 34, pl. 5 | 1995 |
| Achnanthes controversa | Hustedt | A. Schmidt's Atlas Diatom.-Kunde: | pl. 410: figs. 1-5 | 1937 |
| Achnanthes convergens | H. Kobayasi in Kobayasi et al., | Diatom | 2: 84, figs. 1-17, 37-43, 51-54 | 1986 |
| Achnanthes convergens | H. Kobayasi | J. Jap. Bot. | 40: 348, pl. XII: fig. 5 | 1965 |
| Achnanthes convergens | H. Kobayasi | Bull. Chichibu Mus. Nat. Hist. | 12: 68, pl. 11: fig. 21 | 1964 |
| Achnanthes convergens | Kobayasi | image |
| Achnanthes corrupta | Giffen | image |
| Achnanthes costata | Greville | Trans. Bot. Soc. Edinburgh | 8: 438, pl. VI: figs. 8-10 | 1866 |
| Achnanthes costata_('costatus') | C. Johnston | image |
| Achnanthes cotteriensis | Foged | Biblioth. Phycol. | 41: 24, pl. XV: fig. 6 | 1978 |
| Achnanthes crassa | Hustedt | Arch. Hydrobiol. Suppl. | 15: 194, pl. XIII: figs. 37-40 | 1937 |
| Achnanthes crassa var. elliptica | Suxena & Venkateswarlu | image |
| Achnanthes crenulata | Grunow | image |
| Achnanthes crenulata var. arcuata | Tsumura | image |
| Achnanthes crenulata var. confusa | Van Landingham | image |
| Achnanthes crenulata var. constricta | Hustedt | image |
| Achnanthes crenulata var. elliptica | Gandhi | image |
| Achnanthes crenulata var. linearis | Gandhi | image |
| Achnanthes crenulata var. linearis | Meister | image |
| Achnanthes cristata | Rabenhorst | image |
| Achnanthes crosbyana | Foged | image |
| Achnanthes crucifera | Ostrup | image |
| Achnanthes crucifera var. capitata | Cleve-Euler | image |
| Achnanthes cucurbita | Skvortzov | Publ. Mus. Hoangho Paiho Tien Tsin | 36: 8, pl. 1: figs. 24, 25 | 1935 |
| Achnanthes cuneata | Grunow | image |
| Achnanthes curtissima | J.R. Carter | J. Quekett Microscop. Club | 29: 200, fig. 3 | 1963 |
| Achnanthes curvata | Leuduger-Fortmorel | image |
| Achnanthes curvirostrum | J. Brun | image |
| Achnanthes cyclophora | Heiden & Kolbe | image |
| Achnanthes cyclophora | Heiden in Heiden & Kolbe | Deutsche Südpolar-Exped. 1901-1903, | 8: 580, pl. 5(35): figs. 106, 106a | 1928 |
| Achnanthes danica | (Flogel) Grunow | image |
| Achnanthes danica var. major | Cleve | image |
| Achnanthes danica var. maxima | Cleve | image |
| Achnanthes danica var. schulzii | Cleve-Euler | image |
| Achnanthes danicoides | Giffen | image |
| Achnanthes daonensis | H. Lange-Bertalot in H. Lange-Bertalot & K. Krammer | Biblioth. Diatomol. | 18: 43, pl. 19: figs. 27-32; pl. 25: figs. 1-6; pl. 95: figs. 1-13 | 1989 |
| Achnanthes daonensis | Lange-Bertalot | image |
| Achnanthes daui | Foged | image |
| Achnanthes daui | N. Foged | Danm. Geol. Unders., II Raekke, | 84: 14, pl. I: fig. 10 | 1962 |
| Achnanthes daui var. alaskaensis | Foged | image |
| Achnanthes debilissima | Oestrup | image |
| Achnanthes decipiens | Reimer | Not. Nat. Acad. Nat. Sci. Philadelphia | 397: 2, pl. 1: figs. 2-5 | 1966 |
| Achnanthes deflexa | C.W. Reimer in R. Patrick & C.W. Reimer | Monogr. Acad. Nat. Sci. Philadelphia | 13: 256, pl. 16: figs. 18-20 | 1966 |
| Achnanthes deflexa | Reimer | image |
| Achnanthes deflexa var. alpestris | R. Lowe & J.P. Kociolek | Nova Hedwigia | 39: 468, figs. 1-5 | 1984 |
| Achnanthes deflexa var. alpestris | R. Lowe & Kociolek | image |
| Achnanthes delicatissima | R. Simonsen in Hinz, Simonsen, & Crawford | Diatom Res. | 27: 81 | 2012 |
| Achnanthes delicatissima | R. Simonsen | Kieler Meeresf. | 15: 75, pl. 10: figs. 8-13 | 1959 |
| Achnanthes delicatissima | Simonsen | image |
| Achnanthes delicatula | (Kützing) Grunow in Van Heurck | Syn. Diat. Belgique: | expl. pl. XXVII: fig. 3 | 1880 |
| Achnanthes delicatula | (Kützing) Grunow | image |
| Achnanthes delicatula | (Kützing) Grunow | image |
| Achnanthes delicatula f. angustata | (Gutwinski) Gutwinski | image |
| Achnanthes delicatula subsp. engelbrechtii | (Cholnoky) Lange-Bertalot | Biblioth. Diatomol. | 27: 3 | 1993 |
| Achnanthes delicatula subsp. engelbrechtii | (Cholnoky) Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 72 | 1991 |
| Achnanthes delicatula subsp. hauckiana | (Grunow) Lange-Bertalot & Ruppel | image |
| Achnanthes delicatula subsp. septentrionalis | (Østrup) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 46 | 1989 |
| Achnanthes delicatula subsp. septentrionalis | (Ostrup) Lange-Bertalot | image |
| Achnanthes delicatula var. australis | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 20, pl. II: fig. 18 | 1955 |
| Achnanthes delicatula var. australis | Manguin | image |
| Achnanthes delicatula var. magellanica | Frenguelli | image |
| Achnanthes delicatula var. pacis | Frenguelli | image |
| Achnanthes delicatula var. robusta | Hustedt | Abh. u. Vortr. Bremer Wiss. Ges. | 8/9: 378, figs. 1, 2 | 1934 |
| Achnanthes delicatula var. rostrata | (Schulz) Cleve-Euler | image |
| Achnanthes delpiroui | M. Peragallo | image |
| Achnanthes depressa | (Cleve) Hustedt | Rabenhorst's Krypt.-Fl., ed. 2, | 7{2}: 417 | 1933 |
| Achnanthes depressa var. lanceolata | Cleve-Euler | image |
| Achnanthes desperata | Cholnoky | image |
| Achnanthes detha | M.H. Hohn & J. Hellerman | Trans. Amer. Microscop. Soc. | 82: 274, pl. II: figs. 7, 8 | 1963 |
| Achnanthes devilensis | Foged | image |
| Achnanthes devilensis | N. Foged | Biblioth. Phycol. | 53: 45, pl. XI: figs. 13, 14; pl. XII: figs. 17, 18 | 1981 |
| Achnanthes didyma f. gibbosa | J.R. Carter | image |
| Achnanthes didyma | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 405, fig. 857 | 1933 |
| Achnanthes diluviana | Hustedt | Abh. Naturw. Ver. Bremen | 33: 451, figs. 11, 12 | 1954 |
| Achnanthes dimorpha | Turpin | Mém. Mus. Hist. Nat. [Paris] | 16: 313, pl. 13: fig. 12 | 1828 |
| Achnanthes dimorphostriata | Kobayasi | image |
| Achnanthes diplopunctata | R. Simonsen in Hinz, Simonsen, & Crawford | Diatom Res. | 27: 82 | 2012 |
| Achnanthes diplopunctata | R. Simonsen | Kieler Meeresf. | 15: 76, pl. 10: figs. 4-7 | 1959 |
| Achnanthes diplopunctata | Simonsen | image |
| Achnanthes dispar | Cleve | Acta Soc. Fauna et Flora Fenn. | 8{2}: 52, pl. III: figs. 2, 3 | 1891 |
| Achnanthes dispar | Mann | image |
| Achnanthes dispar var. angulata | Hustedt | image |
| Achnanthes dispar var. capitata | Jasnitsky | image |
| Achnanthes dispar var. fontellii | Cleve-Euler | K. Svenska Vet.-Akad. Handl., ser. 4, | 4{5}: 19, fig. 514c,d | 1953 |
| Achnanthes dispar var. lanceolata | P. Schulz | image |
| Achnanthes distincta | E. Messikommer | Hydrobiologia | 6: 32, pl. I: fig. 2 | 1954 |
| Achnanthes distorta | M. Peragallo | image |
| Achnanthes distorta | M. Peragallo | image |
| Achnanthes diversa | Cleve-Euler | Kongl. Svenska Vet. Akad. Handl., ser. 4, | 4{5}: 47, fig. 588 | 1953 |
| Achnanthes dornii | Lange-Bertalot | image |
| Achnanthes dornii | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 49, pl. 38: figs. 5-7; pl. 74: figs. 10-12 | 1989 |
| Achnanthes dorogostaiskii | Jasnitsky | image |
| Achnanthes dubia | Bory | image |
| Achnanthes duthiei_('duthii') | M.R. Sreenivasa | Phycologia | 10: 79, fig. 2A-C | 1971 |
| Achnanthes duthii | Sreenivasa | image |
| Achnanthes elata | (Leud.-Fort.) Gandhi | image |
| Achnanthes elata var. curvula | Gandhi | image |
| Achnanthes elegans | H. Kobayasi | image |
| Achnanthes elegans | H. Kobayasi | image |
| Achnanthes elliptica f. ikpikpukensis | Foged | image |
| Achnanthes elliptica | Schumann | image |
| Achnanthes elliptica | Skvortzov & Meyer | image |
| Achnanthes elliptica var. elongata | Cleve-Euler | image |
| Achnanthes elliptica var. minor | (Schulz) Cleve-Euler | image |
| Achnanthes elliptica var. minor | (Schulz) Cleve-Euler | image |
| Achnanthes elliptica var. pungens | Cleve-Euler | Soc. Sci. Fenn., Comment. Biol. | 4{14}: 38, fig. 40 | 1934 |
| Achnanthes elliptica var. rostrata | Cleve-Euler | image |
| Achnanthes elongata | R. Majewska & B. Van de Vijver in Majewska et al. | Botanica Marina | 60: 305, figs. 1-52 | 2017 |
| Achnanthes engelbrechtii | Cholnoky | Ber. Deutsch. Bot. Ges. | 68: 16, figs. 1-8 | 1955 |
| Achnanthes engelbrechtii var. minuta | Cholnoky | image |
| Achnanthes entrancensis | Foged | image |
| Achnanthes erdmannensis | Foged | Tromsö Museums Skrifter | 11: 68, pl. III: figs. 5a, b | 1964 |
| Achnanthes eureka | I. Álvarez-Blanco & S. Blanco | Biblioth. Diatomol. | 60: 14, pl. 20: figs. 1-6; pl. 67 | 2014 |
| Achnanthes eutrophila | H. Lange-Bertalot | Iconogr. Diatomol. | 2: 25, pl. 78: figs. 29-38 | 1996 |
| Achnanthes exigua f. angustirostrata | Krasske | Arch. Hydrobiol. | 35: 371, pl. XI: figs. 5, 6 | 1939 |
| Achnanthes exigua f. semiaperta | P. Guermeur | Cat. Inst. Franc\*,. Afrique Noire | 12: 32, figs. 2/3c,i,j | 1954 |
| Achnanthes exigua f. subcapitata | Suxena & Venkateswarlu | image |
| Achnanthes exigua f. subglobosa | Manguin | image |
| Achnanthes exigua | Grunow in Van Heurck | Syn. Diat. Belgique: | expl. pl. XXVII: fig. 29 | 1880 |
| Achnanthes exigua | Pantocsek | image |
| Achnanthes exigua var. angustirostrata | (Krasske) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 53 | 1989 |
| Achnanthes exigua var. baikalensis | Skvortzov | image |
| Achnanthes exigua var. capitata | Amossé | image |
| Achnanthes exigua var. capitata | Hustedt | image |
| Achnanthes exigua var. constricta | Hustedt | image |
| Achnanthes exigua var. elliptica | Hustedt | Arch. Hydrobiol. suppl. | 15: 197, pl. IX: figs. 8, 9 | 1937 |
| Achnanthes exigua var. heterovalva | G. Krasske | Bot. Arch. | 3: 193, figs. 9a, 9b | 1923 |
| Achnanthes exigua var. indica | Skvortzov | image |
| Achnanthes exigua var. nipponica | Skvortzov | image |
| Achnanthes exigua var. siamensis_('siamense') | Hirano | image |
| Achnanthes exigua var. staurophora | Pantocsek | image |
| Achnanthes exigua var. undulata | Frenguelli | image |
| Achnanthes exigua var. yabeana | Skvortzov & Noda | image |
| Achnanthes exiguiformis | Hustedt | image |
| Achnanthes exiguoides | Compère | image |
| Achnanthes exilis | Kützing | Alg. aq. dulc. germ. | 2: [3] | 1833 |
| Achnanthes exilis | Kützing | image |
| Achnanthes exilis | Kützing | image |
| Achnanthes exilis var. minutissima | Brun | image |
| Achnanthes exiloides | Cholnoky | image |
| Achnanthes exiloides | J.R. Carter | image |
| Achnanthes expecta | Van Landingham | image |
| Achnanthes expressa | J.R. Carter | image |
| Achnanthes fasciata | H.P. Gandhi | image |
| Achnanthes felinophila | R.L. Lowe & A.R. Sherwood in R.L. Lowe, A.R. Sherwood, & J.R. Ress | Diatom Research | 24: 333, figs. 31-54 | 2009 |
| Achnanthes fimbriata | (Grunow) Ross | image |
| Achnanthes flahaultii_('flahaulti') | Heribaud | image |
| Achnanthes flathukensis | Foged | Tromsö Museums Skrifter | 11: 68, pl. III: figs. 3a, b | 1964 |
| Achnanthes flexella | (Kützing) Mann | image |
| Achnanthes flexella var. alpestris | Brun | Diat. Alpes: | 30, pl. III: fig. 26 | 1880 |
| Achnanthes fogedii | H. Håkansson | Bot. Not. | 131: 407, fig. 1 | 1978 |
| Achnanthes fogedii | H. Håkansson | image |
| Achnanthes folliotii | Fusey | image |
| Achnanthes fontana | Round | image |
| Achnanthes fonticola | Hustedt | image |
| Achnanthes fonticolanceolata | H. Lange-Bertalot & H. Schimanski in H. Lange-Bertalot & K. Krammer | Biblioth. Diatomol. | 18: 57, pl. 88: figs. 1-7 | 1989 |
| Achnanthes fossilis | M. Peragallo | image |
| Achnanthes fragilarioides | J.B. Petersen | Dansk Bot. Ark. | 4{5}: 18, fig. 6 | 1924 |
| Achnanthes fragilis | Skvortzov | image |
| Achnanthes frequentissima | H. Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 58, pl. 86: figs. 1-15'; pl. 91: figs. 6, 7 | 1989 |
| Achnanthes frequentissima | Lange-Bertalot | image |
| Achnanthes frigida | Cleve-Euler | image |
| Achnanthes frigida | Hustedt | A. Schmidt's Atlas Diatom.-Kunde: | pl. 409: figs. 30-33 | 1937 |
| Achnanthes fugei_('fugeii') | J.R. Carter | J. Quekett Micr. Club | 29: 203, fig. 7 | 1963 |
| Achnanthes fugeii | J.R. Carter | image |
| Achnanthes fukiensis | Skvortzov | image |
| Achnanthes fulla | J.R. Carter | Beih. Nova Hedwigia | 31: 608, pl. 1: figs. 19, 20 | 1970 |
| Achnanthes gainii | (M. Peragallo) Mann | image |
| Achnanthes gamma | (Cleve) Ainosd | image |
| Achnanthes gamma var. rectilineata | (Cleve) Amossé | image |
| Achnanthes genuflexa | Kützing | image |
| Achnanthes georgica | Reinsch | Int. Polarforsch. 1882-1883, Deutsch. Exped. Ergebn. | 2: 431, no fig. | 1890 |
| Achnanthes germainii | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 20, pl. II: fig. 19 | 1955 |
| Achnanthes germainii | Manguin | image |
| Achnanthes gessneri | Hustedt | Arch. Hydrobiol. | 48: 148, figs. 14-19 | 1953 |
| Achnanthes gibberula | Grunow in Van Heurck | Syn. Diat. Belgique: | pl. XXVII: figs. 47-49 | 1880 |
| Achnanthes gibberula | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 22 (illustr. in Van Heurck, Syn. Diat. Belgique: pl. XXVII: figs. 47-49. 1880) | 1880 |
| Achnanthes gibberula var. angustior | Grunow in Cleve | Kongl. Svenska Vetensk.-Akad. Handl., ser. 4, | 27{3}: 184 | 1895 |
| Achnanthes gibberula var. interrupta | V.S. Poretzky & Anissimova | Issl. Ozer SSSR | 2: 49, pl. IX: figs. 7-12 | 1933 |
| Achnanthes gibbosa | Hustedt | image |
| Achnanthes girinensis | Skvortzov | Publ. Mus. Hoangho Paiho Tien Tsin | 36: 39, pl. 9: fig. 17 | 1935 |
| Achnanthes glabrata | Grunow | Verh. K.K. Zool.-Bot. Ges. Wien | 13: 146, pl. 13: fig. 17 | 1863 |
| Achnanthes glabrata var. auklandica | Grunow | image |
| Achnanthes gondwana | D. Metzeltin & H. Lange-Bertalot | Iconogr. Diatomol. | 11: 16, pls. 11-13, 14: fig. 1, 15, 16: figs. 2, 4 | 2003 |
| Achnanthes gracillima | Hustedt | Arch. Hydrobiol. | 18: 161, pl. V: fig. 10, 11 | 1927 |
| Achnanthes gracillima var. nipponica | Skvortzov | image |
| Achnanthes grana | M.H. Hohn & J. Hellerman | Trans. Amer. Microscop. Soc. | 82: 274, pl. II: figs. 9, 10 | 1963 |
| Achnanthes granii | Hohn & Hellerman | image |
| Achnanthes gregoriana | Greville | Quart. J. Microscop. Sci. | 7: 84, pl. VI: figs. 13, 14 | 1859 |
| Achnanthes grimmei | Krasske | image |
| Achnanthes grimmei var. elliptica | Krasske | image |
| Achnanthes grimmei var. elliptica | Krasske | image |
| Achnanthes grimmei var. hyalina | Hustedt | image |
| Achnanthes grimmei var. inflata | Krasske | image |
| Achnanthes grimmei_('Grimmii') | Krasske | Abh. Ver. Naturk. Cassel | 56: 30, pl. I: fig. 10 | 1925 |
| Achnanthes grimmei_('grimmii') | Krasske | image |
| Achnanthes grischuna | M. Wuthrich | image |
| Achnanthes grischuna | M. Wuthrich | Ergebn. Wiss. Untersuch. Schweiz. Nationalparks | 14: 303, pl. 7: figs. 7-20 | 1975 |
| Achnanthes groenlandica | (Cleve) Grunow | image |
| Achnanthes groenlandica f. jaydei | McIntire | image |
| Achnanthes groenlandica var. phinneyi | McIntire & Reimer | image |
| Achnanthes grunowii | K. Toyoda & D.M. Williams in Toyoda et al. | J. Jap. Bot. | 80: 7 | 2005 |
| Achnanthes hankensis | Skvortzov | image |
| Achnanthes hardingensis | Foged | image |
| Achnanthes harrisonii | Cholnoky | image |
| Achnanthes harveyi | Reimer | Not. Nat. Nat. Sci. Philadelphia | 397: 4, pl. 1: figs. 10, 11. | 1966 |
| Achnanthes hastata | Skvortzov & Mayer | image |
| Achnanthes hateromorpha | Grunow | image |
| Achnanthes hauckiana f. fossilis | Manguin | image |
| Achnanthes hauckiana f. lancettula | Hustedt ex R. Simonsen | Atlas & Cat. Diat. Types Hustedt: | 231, pl. 336: fig. 19 | 1987 |
| Achnanthes hauckiana f. nipponica | Skvortzov | image |
| Achnanthes hauckiana f. rhombica | Cleve-Euler | image |
| Achnanthes hauckiana | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 21 | 1880 |
| Achnanthes hauckiana var. densistriata | Horikawa & Okuno | image |
| Achnanthes hauckiana var. elliptica | P. Schulz | image |
| Achnanthes hauckiana var. elliptica | Schulz | image |
| Achnanthes hauckiana var. nipponica | Skvortzov | image |
| Achnanthes hauckiana var. rhombica | Zabelina | Unknown source | 1939: 189, pl. 3 | 1939 |
| Achnanthes hauckiana var. rostrata | P. Schulz | image |
| Achnanthes hauckiana var. rostrata | P. Schulz ex Hustedt in Pascher | Süssw.-Fl. | 10, ed. 2: 202 | 1930 |
| Achnanthes hauckiana var. rostrata | Schulz | image |
| Achnanthes hauckiana var. rostrata | Schulz | Bot. Arch. | 13: 191, fig. 40 | 1926 |
| Achnanthes hauckii | Grunow in Van Heurck | Syn. Diat. Belgique: | pl. XXVII: figs. 14, 15 | 1880 |
| Achnanthes haynaldii | Schaarschmidt | Magyar Növényt. Lapok | 5: 20 | 1881 |
| Achnanthes haynaldii var. elliptico-lanceolata | Schaarschmidt | image |
| Achnanthes haynaldii var. intermedia | A. Cleve | image |
| Achnanthes haynaldii var. oblongo-elliptica | Schaarschmidt | image |
| Achnanthes haynaldii var. vulgaris | Schaarschmidt | image |
| Achnanthes hedinii_('Hedini') | Hustedt in Hedin | Southern Tibet | 6{3}: 122, pl. IX: figs. 12-14 | 1922 |
| Achnanthes heidenii_('Heideni') | P. Schulz | Bot. Arch. | 13: 190, fig. 36 | 1926 |
| Achnanthes helvetica | (Hustedt) Lange-Bertalot apud Kusber & Metzeltin in Jahn et al. | Lange-Bertalot Festschrift: | 632 | 2001 |
| Achnanthes helvetica | (Hustedt) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 63 | 1989 |
| Achnanthes helvetica var. alpina | Flower & Jones | image |
| Achnanthes helvetica var. alpina | R.J. Flower & V.J. Jones | Diatom Res. | 4: 235, figs. 26-30, 65-69 | 1989 |
| Achnanthes helvetica var. minor | Flower & Jones | image |
| Achnanthes helvetica var. minor | R.J. Flower & V.J. Jones | Diatom Res. | 4: 235, figs. 19-25, 76-79 | 1989 |
| Achnanthes herteri | J. Frenguelli | Ostenia [Estud. Bot. Región Uruguaya 13]: | 128, figs. 6-8 | 1933 |
| Achnanthes heteromorpha | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 23 | 1880 |
| Achnanthes heteromorpha var. binotata | Frenguelli | image |
| Achnanthes heterostriata | Hustedt | image |
| Achnanthes heterostriatoides | Hohn | image |
| Achnanthes hexagona | Cleve & Brun | image |
| Achnanthes hilliardii | E. Manguin ex Kociolek & Reviers | Cryptogamie: Algologie | 17: 178 | 1996 |
| Achnanthes hilliardii | E. Manguin | Rev. Alg. n.s. | 5: 271, pl. I(26): figs. 24-26 | 1961 |
| Achnanthes hilliardii | Manguin | image |
| Achnanthes himalayensis | Jao & Zhu | image |
| Achnanthes hintzii | Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 64 | 1989 |
| Achnanthes hirta | J.P. Catter | image |
| Achnanthes hoermannii_('hörmanii') | Gutwinski | image |
| Achnanthes holmquistii | Foged | image |
| Achnanthes holsatica | Hustedt | image |
| Achnanthes holstii | Cleve | Öfvers. Förh. Kongl. [Svenska] Vetensk.-Akad. | 38{10}: 13, pl. 16: figs. 6, 7 | 1882 |
| Achnanthes holstii var. celtica f. cuneiformis | Fusey | image |
| Achnanthes holstii var. celtica | Fusey | image |
| Achnanthes holstii var. schwabei | Krasske | image |
| Achnanthes hudsonis | Grunow in Van Heurck | Syn. Diat. Belgique: | pl. XXVII: figs. 25, 26 | 1880 |
| Achnanthes hungarica f. constricta | Raabe | image |
| Achnanthes hungarica f. polygonata | Cleve-Euler | image |
| Achnanthes hungarica f. semicruciata | Cleve-Euler | image |
| Achnanthes hungarica | Grunow in Van Heurck | Syn. Diat. Belgique: | pl. XXVII: figs. 1, 2 | 1880 |
| Achnanthes hungarica var. andicola | (Cleve) Ostrup | image |
| Achnanthes hungarica var. brevis | Liebetanz | image |
| Achnanthes hungarica var. jamalinensis | Grunow | image |
| Achnanthes hungarica var. linearis | Abdul-Majeed | image |
| Achnanthes hungarica var. miramaris | Frenguelli | image |
| Achnanthes hungarica var. rivularia | (Frenguelli) Frenguelli | An. Mus. Argent. Cienc. Nat. | 37: 383 | 1933 |
| Achnanthes hungarica var. rivularis | (Freng.) Frenguelli | image |
| Achnanthes hungarica var. rumelica | Istvánffi | image |
| Achnanthes hungarica var. tropica | Frenguelli | image |
| Achnanthes hustedtii | (Krasske) C.W. Reimer in R. Patrick & C.W. Reimer | Monogr. Acad. Nat. Sci. Philadelphia | 13: 264 | 1966 |
| Achnanthes hustedtii | (Krasske) Reimer | image |
| Achnanthes hustedtii | J. Bílý & P. Marvan | Sborn. Prác Tatranskom Nár. Parku | 3: 63 | 1959 |
| Achnanthes hyperborea | Grunow | image |
| Achnanthes hyperboreoides | A. Witkowski, D. Metzeltin, & H. Lange-Bertalot apud D. Metzeltin & A. Witkowski in H. Lange-Bertalot (ed.) | Iconographia diatomologica | 4: 12, pl. 50: figs. 13-19; pl. 75: figs. 2, 6, 8 | 1996 |
| Achnanthes ignota | Hustedt | image |
| Achnanthes ignota | Hustedt | A. Schmidt's Atlas Diatom.-Kunde: | pl. 420, figs. 20-23 | 1958 |
| Achnanthes imanishii | Hirano | image |
| Achnanthes imperfecta | H. Schimanski | Nova Hedwigia | 30: 564, pl. I: figs. 1-5 | 1978 |
| Achnanthes imperfecta | Schimanski | image |
| Achnanthes impexa | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 67, pl. 74: figs. 1-6 | 1989 |
| Achnanthes impexiformis | H. Lange-Bertalot in H. Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 68, pl. 74: figs. 7-9; pl. 75: figs. 2-4 | 1989 |
| Achnanthes impexiformis | Lange-Bertalot | image |
| Achnanthes inaequalis | Ehrenberg | Infusionsthierchen: | 229, no fig. | 1838 |
| Achnanthes incognita | Krasske | Arch. Hydrobiol. | 35: 370, pl. XI: figs. 1, 2 | 1939 |
| Achnanthes indica | Ehrenberg | image |
| Achnanthes indica | J. Brun | image |
| Achnanthes indica var. sulcata | M. Peragallo in H. Peragallo & M. Peragallo, | Denkschr. K. Akad. Wiss. [Wien], Math.-Nat. Kl. | 88: 6, pl. II: fig. 2 [printed I in error] | 1911 |
| Achnanthes indicatrix | H. Lange-Bertalot & A. Steindorf in G. Moser, H. Lange-Bertalot, & D. Metzeltin | Biblioth. Diatomol. | 38: 82, pl. 18: figs. 10-14 | 1998 |
| Achnanthes inflata f. elatoides | Cholnoky | image |
| Achnanthes inflata f. subcostata | Lenoble & Manguin | image |
| Achnanthes inflata f. vidarbhensis | Sarode & Kamat | image |
| Achnanthes inflata | Grunow | image |
| Achnanthes inflata var. elata | (Leud.-Fortm.) Hustedt | image |
| Achnanthes inflata var. gibba | Gandhi | image |
| Achnanthes inflata var. javanica | Gandhi | image |
| Achnanthes inflata var. sigmata | O Müller | image |
| Achnanthes inflata var. sinica | Skvortzov | image |
| Achnanthes inflata var. smithiana | (Greville) Cleve | Kongl. Svenska Vetensk.-Akad. Handl., ser. 4, | 27{3}: 193 | 1895 |
| Achnanthes inflatagrandis | D. Metzeltin, H. Lange-Bertalot, & F. García-Rodríguez | Iconogr. Diatomol. | 15: 22, pl. 26; pl. 27: figs. 1, 2 | 2005 |
| Achnanthes ingratifomis | Lange-Bertalot | image |
| Achnanthes ingratiformis | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 70, pl. 73: fig. 6; pl. 74: figs. 13-18' | 1989 |
| Achnanthes inopinata | Cleve | image |
| Achnanthes intermedia | Kützing | Alg. Aq. Dulc. Germ. | 3: [3] | 1833 |
| Achnanthes intermedia | Kützing | image |
| Achnanthes intermedia | Kützing | image |
| Achnanthes interrupta | J.R. Carter | image |
| Achnanthes investiens | J.R. Carter | image |
| Achnanthes investiens_(`investians') | J.R. Carter | Nova Hedwigia | 11: 445, pl. 60(1): figs. 23-28; pl. 67(8): figs. 13, 14 | 1966 |
| Achnanthes islandica Østrup | | image |
| Achnanthes jacksonii | Woodhead & Tweed | image |
| Achnanthes jacobii | Manguin | Ann. Géol. Service des Mines | 18: 98, pl. III: figs. 46 | 1949 |
| Achnanthes jakovljevicii_('jakovljevici') | Hustedt | image |
| Achnanthes jamaicensis_(`jamaicense') | A.C. Podzorski | Biblioth. Diatomol. | 7: 25, pl. 5: figs. 13, 14; pl. 35: figs. 6, 7 | 1985 |
| Achnanthes jamalinensis | Grunow | image |
| Achnanthes jan-marcinii | A. Witkowski, D. Metzeltin, & H. Lange-Bertalot apud D. Metzeltin & A. Witkowski in H. Lange-Bertalot (ed.) | Icon. Diatomol. | 4: 12, pl. 50: figs. 5-9, 22, 23; pl. 75: figs. 4, 9 [9 not cited in text] | 1996 |
| Achnanthes japonica | H. Kobayasi in Kobayasi et al., | Diatom | 2: 86, figs. 19-35, 44-50, 55-58 | 1986 |
| Achnanthes japonica | H. Kobayasi | J. Jap. Bot. | 40: 347, pl. XII: fig. 4 | 1965 |
| Achnanthes japonica | H. Kobayasi | Bull. Chichibu Mus. Nat. Hist. | 12: 68, pl. 11: fig. 19 | 1964 |
| Achnanthes japonica | Kobayasi | image |
| Achnanthes javanica | Ehrenberg, inval. | image |
| Achnanthes javanica | Grunow | image |
| Achnanthes javanica var. bengalensis | Grunow | image |
| Achnanthes javanica var. rhombica | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 18, no fig. | 1880 |
| Achnanthes javanica var. subconstricta | Meister | Kieselalg. Asien: | 40, pl. 14: fig. 113 | 1932 |
| Achnanthes javanica var. subventricosa | Grunow | image |
| Achnanthes javanica var. tenuistauros | (Mann) Meister | image |
| Achnanthes jeniseyensis var. undulata | Skvortzov | image |
| Achnanthes jeniseyensis_('yeniseyensis') | Skvortzov | image |
| Achnanthes jentzschii_('jentzschi') | (Grunow) P. Schulz | image |
| Achnanthes jogensis | Gandhi | image |
| Achnanthes johncarteri | Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 72 | 1989 |
| Achnanthes joursacensis_(`joursacense') | Héribaud | Diat. Foss. Auvergne | 2: 5, pl. XI: figs. 26, 27 | 1903 |
| Achnanthes jourseconse | Heribaud | image |
| Achnanthes juriljii | Van Landingham | image |
| Achnanthes kamczatica | Lupikina | image |
| Achnanthes kansouensis | Skvortzov | Publ. Mus. Hoangho Paiho Tien Tsin | 36: 8, pl. 1: fig. 23 | 1935 |
| Achnanthes karelica | Molder | image |
| Achnanthes kenaiensis | J.L. Stone in McLaughlin & Stone | Beih. Nova Hedwigia | 82: 12, pl. 1: figs. 7, 8 | 1986 |
| Achnanthes kenyae | Cholnoky | Österr. Bot. Z. | 107: 351, fig. 1: 1-4 | 1960 |
| Achnanthes kerguelenensis | Castracane | image |
| Achnanthes kertschiana | Pantocsek | image |
| Achnanthes kizaki | Skvortzov | Philippine J. Sci. | 61: 23, pl. 2: fig. 25 | 1936 |
| Achnanthes koenigii | R. Simonsen | Kieler Meeresf. | 15: 76, pl. 10: figs. 18-21 | 1959 |
| Achnanthes koenigii | Simonsen | image |
| Achnanthes koghisensis f. angustifasciata | G. Moser, H. Lange-Bertalot, & D. Metzeltin | Biblioth. Diatomol. | 38: 84, pl. 19: figs. 7-11 | 1998 |
| Achnanthes koghisensis | G. Moser, H. Lange-Bertalot & D. Metzeltin | Biblioth. Diatomol. | 38: 84, pl. 19: figs. 1-6 | 1998 |
| Achnanthes kohleriana | K. Kopalová, R. Zidarova & B. Van de Vijver | European Journal of Taxonomy | 217: 3, figs. 1-24 | 2016 |
| Achnanthes kolbei | Hustedt in Pascher | Süssw.-Fl., ed. 2, | 10: 204, fig. 279 | 1930 |
| Achnanthes kolbei var. elliptica | Fusey | image |
| Achnanthes koshovii | Jasnitsky | image |
| Achnanthes kraeuselii | Cholnoky | Bot. Not. | 1954: 271, figs. 5-10 | 1954 |
| Achnanthes kraeuselii var. debegenica | Cholnoky | image |
| Achnanthes kranzii | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 74, pl. 55: figs. 13-21; pl. 62: figs. 6-8 | 1989 |
| Achnanthes krasskei | H. Kobayasi & A. Sawatri | Proc. Int. Diatom Symp. | 8: 261 | 1986 |
| Achnanthes krasskei | Kobayasi & Sawatari | image |
| Achnanthes krejcii | Hustedt | Arch. Hydrobiol. | 43: 345, pl. 409: figs. 44-51 in A. Schmidt's Atlas | 1950 |
| Achnanthes kriegeri | G. Krasske | Ber. Deutsch. Bot. Ges. | 61: 84, figs. 3-7 | 1943 |
| Achnanthes kriegeri | Krasske | image |
| Achnanthes kryophila | J.B. Petersen | Meddel. Gronland | 64: 316, fig. 6 | 1924 |
| Achnanthes kryophila var. africana | Cholnoky | image |
| Achnanthes kryophila var. densistriata | Hustedt | Abh. u. Vortr. Bremer Wiss. Ges. | 8/9: 378, figs. 3, 4 | 1934 |
| Achnanthes kryophila var. sublinearis | Suxena & Venkateswarlu | image |
| Achnanthes kryophiloides | Foged | Tromsö Museums Skrifter | 11: 70, pl. III: figs. 2a, b | 1964 |
| Achnanthes kryophiloides | Hohn | image |
| Achnanthes kryophiloides | Hohn | Monogr. Acad. Nat. Sci. Philadelphia | 14: 468, pl. 1: figs. 5-6 | 1966 |
| Achnanthes kuelbsii | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 79, pl. 36: 27-30; pl. 37: figs. 1-4 | 1989 |
| Achnanthes kuolensis | Cleve-Euler | image |
| Achnanthes kuwaitensis | Hendey | image |
| Achnanthes lacunarum | Hustedt | image |
| Achnanthes lacunarum var. fonticola | Hustedt | image |
| Achnanthes lacunicola | Patrick & Freese | image |
| Achnanthes lacus-baikali_('lacus baikali') | Skvortzov | image |
| Achnanthes lacus-karluki | E. Manguin ex Kociolek & Reviers | Cryptogamie: Algologie | 17: 178 | 1996 |
| Achnanthes lacus-karluki | Manguin | image |
| Achnanthes lacus-karluki_('lacus karluki') | E. Manguin | Rev. Alg. n.s. | 5: 272, pl. I(26): figs. 27, 28 | 1961 |
| Achnanthes lacus-vulcani | Lange-Bertalot & K. Krammer | Biblioth. Diatomol. | 18: 80 | 1989 |
| Achnanthes lacus-vulcani | Lange-Bertalot & Krammer | image |
| Achnanthes laevis | Østrup | Danske Diat.: | 130, pl. III: fig. 80 | 1910 |
| Achnanthes laevis | Ostrup | image |
| Achnanthes laevis var. aretasii | (E. Manguin) H. Lange-Bertalot in R. Schmidt, R. Mäusbacher, & J. Müller | J. Paleolimnol. | 3: 60 | 1990 |
| Achnanthes laevis var. austriaca | (Hustedt) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 82 | 1989 |
| Achnanthes laevis var. diluviana | (Hustedt) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 82 | 1989 |
| Achnanthes laevis var. ninckei | (Guermeur & Manguin) Lange-Bertalot | image |
| Achnanthes laevis var. ninckei | (P. Guermeur & E. Manguin) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 82 | 1989 |
| Achnanthes laevis var. quadratarea | (Østrup) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 83 | 1989 |
| Achnanthes laevis var. quadratarea | (Ostrup) Lange-Bertalot | image |
| Achnanthes lanceolata | (Brébisson ex Kützing) Grunow in Van Heurck | Syn. Diat. Belgique: | expl. pl. XXVII: fig. 8 | 1880 |
| Achnanthes lanceolata | (Brebisson ex Kützing) Grunow | image |
| Achnanthes lanceolata | (Brebisson) Grunow | image |
| Achnanthes lanceolata f. baicalensis | Skvortzov & Meyer | Trudy Sungar. Rech. Biol. Stants. [Obshch. Izuch. Man'chzh. Kraya, Kharbin] | 1{5}: 9, pl. I: fig. 16 | 1928 |
| Achnanthes lanceolata f. diminuta | Cleve-Euler | image |
| Achnanthes lanceolata f. dubia | (Grunow) Ko-Bayashi | image |
| Achnanthes lanceolata f. elongata | Lauby | image |
| Achnanthes lanceolata f. fossilis | Manguin | Ann. Géol. Service des Mines | 18: 98, pl. II: fig. 41 | 1949 |
| Achnanthes lanceolata f. minor | P. Schulz | Bot. Arch. | 13: 191, fig. 42 | 1926 |
| Achnanthes lanceolata f. minores | Krasske | image |
| Achnanthes lanceolata f. parallela | Fusey | image |
| Achnanthes lanceolata f. pura | A. Mayer | Denkschr. K. Bayer. Bot. Ges. | 13: 26, pl. II: fig. 23 | 1917 |
| Achnanthes lanceolata f. rhombica | J.R. Carter | image |
| Achnanthes lanceolata f. semipura | A. Mayer | Denkschr. K. Bayer. Bot. Ges. | 13: 26, pl. II: fig. 27 | 1917 |
| Achnanthes lanceolata subsp. apiculata | (R. Patrick) Lange-Bertalot | Biblioth. Diatomol. | 27: 3 | 1993 |
| Achnanthes lanceolata subsp. apiculata | (R. Patrick) Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 80 | 1991 |
| Achnanthes lanceolata subsp. biporoma | (M.H. Hohn & J. Hellerman) Lange-Bertalot | Biblioth. Diatomol. | 27: 3 | 1993 |
| Achnanthes lanceolata subsp. biporoma | (M.H. Hohn & J. Hellerman) Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 78 | 1991 |
| Achnanthes lanceolata subsp. dubia | (Grunow) Lange-Bertalot | Biblioth. Diatomol. | 27: 3 | 1993 |
| Achnanthes lanceolata subsp. dubia | (Grunow) Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 76 | 1991 |
| Achnanthes lanceolata subsp. frequentissima | H. Lange-Bertalot | Biblioth. Diatomol. | 27: 4, pl. 44: figs. 1-3, 15-23 & pl. 45: fig. 18 in H. Ettl et al. (eds.), Süsswasserfl. Mitteleuropa 2{4}: 78 (1991) | 1993 |
| Achnanthes lanceolata subsp. frequentissima | Lange-Bertalot | image |
| Achnanthes lanceolata subsp. frequentissima | Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 78, pl. 44: figs. 1-38; pl. 45: fig. 18 | 1991 |
| Achnanthes lanceolata subsp. lanceolatoides | (H.E. Sovereign) Lange-Bertalot | Biblioth. Diatomol. | 27: 6 | 1993 |
| Achnanthes lanceolata subsp. lanceolatoides | (H.E. Sovereign) Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 80 | 1991 |
| Achnanthes lanceolata subsp. polymorpha | Skabichevskij | image |
| Achnanthes lanceolata subsp. robusta | (Hustedt) Lange-Bertalot | Biblioth. Diatomol. | 27: 6 | 1993 |
| Achnanthes lanceolata subsp. robusta | (Hustedt) Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 79 | 1991 |
| Achnanthes lanceolata subsp. rostrata | (Østrup) Lange-Bertalot | Biblioth. Diatomol. | 27: 6 | 1993 |
| Achnanthes lanceolata subsp. rostrata | (Østrup) Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 79 | 1991 |
| Achnanthes lanceolata var. abbreviata | Reimer | Not. Nat. Nat. Sci. Philadelphia | 397: 3, pl. 1: figs. 6-9 | 1966 |
| Achnanthes lanceolata var. amissa | Reimer | image |
| Achnanthes lanceolata var. apiculata | Patrick | image |
| Achnanthes lanceolata var. apiculata | R. Patrick | Farlowia | 2: 167, pl. I: figs. 4, 5 | 1945 |
| Achnanthes lanceolata var. baicalensis | (Skvortzov & Meyer) Frenguelli | Rev. Mus. La Plata, n.s. Bot. | 3: 237 | 1941 |
| Achnanthes lanceolata var. baicalensis | (Skvortzov) Frenguelli | image |
| Achnanthes lanceolata var. bimaculata | Hustedt | Arch. Hydrobiol. | 43: 394, pl. XXXVI: fig. 1, 2 | 1950 |
| Achnanthes lanceolata var. boyei | (Østrup) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 85 | 1989 |
| Achnanthes lanceolata var. boyei | (Ostrup) Lange-Bertalot | image |
| Achnanthes lanceolata var. brasiliensis | Zimmermann | image |
| Achnanthes lanceolata var. capitata | O. Muller | image |
| Achnanthes lanceolata var. crosse | Cleve-Euler | image |
| Achnanthes lanceolata var. dubia | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 23 (illustr. in Van Heurck, Syn. Diat. Belgique: pl. XXVII: figs. 12, 13. 1880) | 1880 |
| Achnanthes lanceolata var. dubia | Grunow in Van Heurck | Syn. Diat. Belgique: | pl. XXVII: figs. 12, 13 | 1880 |
| Achnanthes lanceolata var. dubia | Second card | image |
| Achnanthes lanceolata var. elliptica | Cleve | Acta Soc. Fauna et Flora Fenn. | 8{2}: 51, pl. III: figs. 10, 11 | 1891 |
| Achnanthes lanceolata var. elliptico-lanceolata | (Schaarschmidt) R. Ross | image |
| Achnanthes lanceolata var. faeroensis | Ostrup | image |
| Achnanthes lanceolata var. fennica | Cleve-Euler | image |
| Achnanthes lanceolata var. frequentissima | Lange-Bertalot | image |
| Achnanthes lanceolata var. frequentissima | Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 78 | 1991 |
| Achnanthes lanceolata var. frequentissima | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: expl. pl. 86: figs. 1-15' & pl. 91: figs. 6, 7 | 1989 |
| Achnanthes lanceolata var. intermedia | (A. Cleve) Van Landingham | image |
| Achnanthes lanceolata var. lanceolatoides | (Sovereign) Reimer | image |
| Achnanthes lanceolata var. laterirostrata | Gandhi | image |
| Achnanthes lanceolata var. magna | (F. Straub) Lange-Bertalot | Biblioth. Diatomol. | 27: 5 | 1993 |
| Achnanthes lanceolata var. magna | (F. Straub) Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 79 | 1991 |
| Achnanthes lanceolata var. maxima | M. Peragallo | image |
| Achnanthes lanceolata var. minor | (P. Schulz) Lange-Bertalot | Biblioth. Diatomol. | 27: 4 | 1993 |
| Achnanthes lanceolata var. minor | (P. Schulz) Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 79 | 1991 |
| Achnanthes lanceolata var. minutissima | Krasske | Arch. Hydrobiol. | 33: 513 | 1938 |
| Achnanthes lanceolata var. nipponica | Skvortzov | image |
| Achnanthes lanceolata var. oestrupii | Cleve-Euler | image |
| Achnanthes lanceolata var. oestrupii_(`ostrupii') | Cleve-Euler | Acta Forest. Fenn. | 22{4}: 53, fig. 1 | 1922 |
| Achnanthes lanceolata var. omissa | C.W. Reimer in R. Patrick & C.W. Reimer | Monogr. Acad. Nat. Sci. Philadelphia | 13: 272, pl. 18: figs. 16, 17 | 1966 |
| Achnanthes lanceolata var. ovalis | Heribaud | image |
| Achnanthes lanceolata var. ovalis | M. Peragallo | image |
| Achnanthes lanceolata var. perpusilla | Grunow | image |
| Achnanthes lanceolata var. rhomboidea | Gandhi | Nova Hedwigia | 11: 100, pl. 12(2): figs. 49-51 | 1966 |
| Achnanthes lanceolata var. robusta | Hustedt | Arch. Hydrobiol. Suppl. | 15: 202, pl. XIII: figs. 47-49 | 1937 |
| Achnanthes lanceolata var. rostrata | (Oestrup) Hustedt | image |
| Achnanthes lanceolata var. rostrata | Hustedt | Abh. Naturw. Ver. Bremen | 20: 279, pl. III: fig. 34 | 1911 |
| Achnanthes lanceolata var. rostratiformis | Lange-Bertalot | image |
| Achnanthes lanceolata var. rostratiformis | Lange-Bertalot | Biblioth. Diatomol. | 27: 5 | 1993 |
| Achnanthes lanceolata var. rusticum | Steinecke | image |
| Achnanthes lanceolata var. subinflata | Ostrup | image |
| Achnanthes lanceolata var. tenuis | Gonzalves & Gandhi | image |
| Achnanthes lanceolata var. ventricosa | Hustedt | Arch. Hydrobiol. u. Planktonk. | 10: 64, pl. II: fig. 32 | 1914 |
| Achnanthes lanceolatoides | H.E. Sovereign | Trans. Amer. Microscop. Soc. | 79: 345 | 1960 |
| Achnanthes lanceolatoides | H.E. Sovereign | Trans. Amer. Microscop. Soc. | 77: 115, pl. II: figs. 18, 19 | 1958 |
| Achnanthes lancettula | Ostrup | image |
| Achnanthes lapidosa f. chilensis | Krasske | Arch. Hydrobiol. | 35: 372 | 1939 |
| Achnanthes lapidosa f. producta | Halos | image |
| Achnanthes lapidosa | Krasske | Bot. Arch. | 27: 350, fig. 9 | 1929 |
| Achnanthes lapidosa var. appalachiana | (K.E. Camburn & R.L. Lowe) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 93 | 1989 |
| Achnanthes lapidosa var. chilensis | (Krasske) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 92 | 1989 |
| Achnanthes lapidosa var. elliptica | I. Kaczmarska | Acta Palaeobotanica | 25: 41, pl. I: fig. 36, 37, 46 | 1985 |
| Achnanthes lapidosa var. lanceolata | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 401, fig. 852 d-f | 1933 |
| Achnanthes lapidosa var. rostrata | Fusey | image |
| Achnanthes lapidosa var. subrostrata | (Hustedt) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 93 | 1989 |
| Achnanthes lapponica | (Hustedt) Hustedt | Rabenhorst's Krypt.-Fl. Deutschl., 2.Aufl., | 7{2}: 414 | 1933 |
| Achnanthes lapponica f. rostrata | (Gonzalves & Gandhi) Sarode & Kamat | image |
| Achnanthes lapponica var. ninckei | (Guermeur & Manguin) Reimer | image |
| Achnanthes larsenii | Foged | image |
| Achnanthes lata | Hustedt | Int. Rev. Gesamten Hydrobiol. | 42: 36, fig. 38-43 | 1942 |
| Achnanthes laterostrata f. krasskei_('Krasske') | Foged | Bot. Not. | 1952: 164, fig. I:11 | 1952 |
| Achnanthes laterostrata | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 392, fig. 840 | 1933 |
| Achnanthes laterostrata var. capitata | J.L. Stone in McLaughlin & Stone | Beih. Nova Hedwigia | 82: 14, pl. 1: figs. 11, 12 | 1986 |
| Achnanthes laterostrata var. lanceolata | Krasske | image |
| Achnanthes latestriata | Riznyk | image |
| Achnanthes latissima | Cleve-Euler | image |
| Achnanthes lauenburgiana | Hustedt | Arch. Hydrobiol. | 43: 394, pl. XXXVI: figs. 3-9 | 1950 |
| Achnanthes lecohui | Coste & Ricard | image |
| Achnanthes leibleinii | C. Agardh | image |
| Achnanthes lemmermannii | Hustedt | image |
| Achnanthes lemmermannii var. lineata | Salah | image |
| Achnanthes lemmermannii var. obtusa | Hustedt | image |
| Achnanthes lemmermannii var. subcapitata | Fusey | image |
| Achnanthes lemmermannii_(`lemmermanni') | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 390, fig. 837 | 1933 |
| Achnanthes leonardii | A. Witkowski & H. Lange-Bertalot in A. Witkowski, H. Lange-Bertalot, & D. Metzeltin | Iconogr. Diatomol. | 7: 92, 420, pl. 50: figs. 1-12 | 2000 |
| Achnanthes leontopithecus-rosalia | J.C.F. Da Costa | Iheringia | 46: 81, figs. 109-111 | 1995 |
| Achnanthes lesothensis | Schoeman | image |
| Achnanthes leudugeri | Tempère & Brun | image |
| Achnanthes levanderi | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 404, fig. 856 | 1933 |
| Achnanthes levanderi var. helvetica | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 404, fig. 856B | 1933 |
| Achnanthes leveillei | Heribaud | image |
| Achnanthes lewisiana | Patrick | image |
| Achnanthes ligeriana | Heribaud | image |
| Achnanthes lilljeborgii | Grunow | Botan. Centralbl. | 5: 68, no fig. | 1881 |
| Achnanthes lineariformis | H. Kobayasi | image |
| Achnanthes lineariformis | H. Kobayasi | image |
| Achnanthes lineariformis | H. Lange-Bertalot | Biblioth. Diatomol. | 27: 7, pl. 37: figs. 19-23 in H. Lange-Bertalot, Süsswasserfl. Mitteleur. 2{4} (1991) | 1993 |
| Achnanthes lineariformis | Lange-Bertalot | image |
| Achnanthes linearioides | H. Lange-Bertalot in H. Lange-Bertalot & G. Moser | Biblioth. Diatomol. | 29: 95 | 1994 |
| Achnanthes linearis | (W. Smith) Grunow in Van Heurck | Syn. Diat. Belgique: | expl. pl. XXVII: fig. 31 | 1880 |
| Achnanthes linearis f. minuta | Skvortzov | Publ. Mus. Hoangho Paiho Tien Tsin | 36: 19, pl. 1: fig. 12 | 1935 |
| Achnanthes linearis var. cryptocephala | Sheshukova in Proshkina-Lavrenko & Sheshukova (eds.) | Diatomovyi Sbornik: | 148, fig. 6 | 1953 |
| Achnanthes linearis var. jackii | (Rabenhorst) Grunow in Van Heurck | Syn. Diat. Belgique: | expl. pl. XXVII: fig. 24 | 1880 |
| Achnanthes linearis var. kansouensis | Skvortzov | Publ. Mus. Hoangho Paiho Tien Tsin | 36: 8, pl. 1: fig. 22 | 1935 |
| Achnanthes linearis var. nipponica | Skvortzov | image |
| Achnanthes linearis var. pusilla | (Grunow) Cleve | K. Svenska Vet.-Akad. Handl., ser. 4, | 27{3}: 189 | 1895 |
| Achnanthes linearis var. pusilla f. exilis | Cleve-Euler | image |
| Achnanthes linearis var. pusilla | Grunow | image |
| Achnanthes linearis var. subcapitata | Kolbe & Krieger | image |
| Achnanthes linkei | Hustedt | Abh. Naturwiss. Ver. Bremen | 31: 607, figs. 28-32 | 1939 |
| Achnanthes linkei | Hustedt f. minor Salah | image |
| Achnanthes lintonensis | J.R. Carter | image |
| Achnanthes lobata | (Schwartz) Hustedt | Bot. Not. | 1952: 387 | 1952 |
| Achnanthes loczyi | Pantocsek | image |
| Achnanthes longboardia | A.R. Sherwood & R.L. Lowe in R.L. Lowe, A.R. Sherwood, & J.R. Ress | Diatom Research | 24: 328-329, figs. 1-8 | 2009 |
| Achnanthes longipes | C. Agardh | image |
| Achnanthes longipes | C. Agardh | Syst. Alg.: | 1 | 1824 |
| Achnanthes longipes f. elliptica | Foged | image |
| Achnanthes longipes f. lata | Zimmermann | image |
| Achnanthes longipes f. major-elongata_('major elongata') | Zimmermann | image |
| Achnanthes longipes f. minor-decussata_('minor decussata') | Zimmermann | image |
| Achnanthes longipes var. carmichaelii | (Greville) Brébisson | Consid. Diat.: | 13 | 1838 |
| Achnanthes longipes var. carmichaelii | (Greville) Brebisson | image |
| Achnanthes longipes var. fossilis | Pantocsek | image |
| Achnanthes looseri | Frenguelli | Revista Chilena de Historia Natural | 34: 198, fig. 35-1 | 1930 |
| Achnanthes looseri var. lanceolata | Frenguelli | image |
| Achnanthes lorenziana | (Grunow) Cleve | K. Svenska Vet.-Akad. Handl., ser. 4, | 27{3}: 186 | 1895 |
| Achnanthes lorenziana var. capitata | Ostrup | image |
| Achnanthes lucana | J.R. Carter | image |
| Achnanthes lutheri | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 405, fig. 858 | 1933 |
| Achnanthes lyrata | Proshkina-Lavrenko | image |
| Achnanthes lyroides | D. König | image |
| Achnanthes maceneryae | C.W. Reimer & J.J. Lee | Proceedings of the Academy of Natural Sciences of Philadelphia | 140: 344, figs. 8-18 | 1988 |
| Achnanthes macquariensis | Foged | image |
| Achnanthes macropus | Kützing | image |
| Achnanthes maculata | Hustedt | image |
| Achnanthes maewensis | Foged | image |
| Achnanthes magnifica | Hustedt | Bot. Not. | 1952: 385, figs. 62-65 | 1952 |
| Achnanthes mammalis | (Castracane) Cleve | image |
| Achnanthes mammalis var. reticulata | Cleve | image |
| Achnanthes manguinii | Hustedt | Bot. Not. | 1952: 383, figs. 52-56 | 1952 |
| Achnanthes manguinii var. elliptica | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 22, pl. I: fig. 15 | 1955 |
| Achnanthes manguinii var. elliptica | Manguin | image |
| Achnanthes manifera | J. Brun | image |
| Achnanthes mansiensis | Foged | image |
| Achnanthes maolanensis | P. Yu, J.P. Kociolek, & Q.-M. You in You et al. | Phycol. Res. | 67: 304, figs. 1-37 | 2019 |
| Achnanthes maranda | Woodhead & Tweed | image |
| Achnanthes margaritaceum | Cleve | image |
| Achnanthes margaritarum | Cleve | image |
| Achnanthes marginalis | Hendey | image |
| Achnanthes marginestriata | R. Simonsen | Kieler Meeresf. | 15: 76, pl. 12: figs. 10-13 | 1959 |
| Achnanthes marginestriata | Simonsen | image |
| Achnanthes marginulata f. major | R.J. Flower & V.J. Jones | Diatom Res. | 4: 233, figs. 31-38, 54-59 | 1989 |
| Achnanthes marginulata | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 21 (illustr. in Van Heurck, Syn. Diat. Belgique: pl. XXVII: figs. 45, 46. 1880) | 1880 |
| Achnanthes marina | Hustedt ex R. Simonsen | Atlas & Cat. Diat. Types Hustedt: | 231, pl. 337: figs. 1-6 | 1987 |
| Achnanthes marraitensis | Foged | image |
| Achnanthes martyi | Héribaud | Ann. Biol. Lacustre | 10: 89, pl. II: figs. 14-16 | 1920 |
| Achnanthes martyi | Heribaud | image |
| Achnanthes mauiensis | R.L. Lowe & A.R. Sherwood in R.L. Lowe, A.R. Sherwood, & J.R. Ress | Diatom Research | 24: 330, figs. 9-19 | 2009 |
| Achnanthes medioconvexa | H.Z. Zhu & J.Y. Chen | Acta Phytotax. Sin. | 34: 102, fig. 1: 3 | 1996 |
| Achnanthes meisteri | Hustedt ex R. Simonsen | Atlas & Cat. Diat. Types Hustedt: | 231, pl. 338: figs. 1-9 | 1987 |
| Achnanthes mercuryi_(`mercurii') | A. Witkowski, D. Metzeltin, & H. Lange-Bertalot apud D. Metzeltin & A. Witkowski in H. Lange-Bertalot (ed.) | Iconographia diatomologica | 4: 13, pl. 50: figs. 30-32; pl. 75: figs. 1, 5, 7; pl. 92: figs. 1, 2 [not cited in text] | 1996 |
| Achnanthes mesoconstricta | H.Z. Zhu & J.Y. Chen | Acta Phytotax. Sin. | 34: 103, fig. 1: 4 | 1996 |
| Achnanthes mesogongyla | Grunow | image |
| Achnanthes metaffinis | H. Lange-Bertalot & A. Steindorf in G. Moser, A. Steindorf, & H. Lange-Bertalot | Biblioth. Diatomol. | 32: 36, pl. 1: figs. 14-18 | 1995 |
| Achnanthes metakryophila | H. Lange-Bertalot & R. Schmidt in R. Schmidt, R. Mäusbacher, & J. Müller | J. Paleolimnol. | 3: 64, fig. 6d-i | 1990 |
| Achnanthes meyeri | Skvortzov | Philippine J. Sc. | 62: 312, pl. 5: figs. 1, 2, 22, 23 | 1937 |
| Achnanthes mica | Hohn | image |
| Achnanthes microcephala | (Kützing) Grunow in Van Heurck | Syn. Diat. Belgique: | expl. pl. XXVII: fig. 20 | 1880 |
| Achnanthes microcephala | (Kützing) Grunow | image |
| Achnanthes microcephala | (Kützing) Grunow | image |
| Achnanthes microcephala f. magna | Cleve-Euler | image |
| Achnanthes microcephala f. scotica | J.R. Carter in J.R. Carter & A.E. Bailey-Watts | Nova Hedwigia | 33: 534, pl. 1: fig. 31 | 1981 |
| Achnanthes microcephala var. cryptocephala | Gutwinski | image |
| Achnanthes microscopica | (Cholnoky) Lange-Bertalot & K. Krammer | Biblioth. Diatomol. | 18: 99 | 1989 |
| Achnanthes microscopica | (Cholnoky) Lange-Bertalot & Krammer | image |
| Achnanthes minima | J.R. Carter | image |
| Achnanthes minuscula | Hustedt | Arch. Hydrobiol. | 40: 907, pl. XXXIX: figs. 8-12 | 1945 |
| Achnanthes minuta | (Cleve) Patrick & Freese | image |
| Achnanthes minutissima f. curta | Grunow in Van Heurck | Syn. Diat. Belgique: | pl. XXVII: figs. 35, 36 | 1880 |
| Achnanthes minutissima f. gracillima | (Meister) Cleve-Euler | image |
| Achnanthes minutissima f. inconspicua | (Ostrup) Cleve-Euler | image |
| Achnanthes minutissima | Kützing | Alg. Aq. Dulc. Germ. | 8: [4] | 1833 |
| Achnanthes minutissima | Kützing | image |
| Achnanthes minutissima | Kützing | image |
| Achnanthes minutissima var. affinis | (Grunow) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 104 | 1989 |
| Achnanthes minutissima var. capitata | Skvortzov & Noda | image |
| Achnanthes minutissima var. constricta | Skvortzov | Publ. Mus. Hoangho Paiho Tien Tsin | 36: 8, pl. 1: fig. 21 | 1935 |
| Achnanthes minutissima var. cryptocephala | Grunow in Van Heurck | Syn. Diat. Belgique: | pl. XXVII: figs. 41-44 | 1880 |
| Achnanthes minutissima var. gracillima | (Meister) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 104 | 1989 |
| Achnanthes minutissima var. inconspicua | Østrup | Danske Diat.: | 129, pl. III: fig. 79 | 1910 |
| Achnanthes minutissima var. inconspicua | Ostrup | image |
| Achnanthes minutissima var. jackii | (Rabenhorst) Lange-Bertalot & Ruppel | image |
| Achnanthes minutissima var. macrocephala | Hustedt | Arch. Hydrobiol. Suppl. | 15: 193, pl. XIII: figs. 50-53 | 1937 |
| Achnanthes minutissima var. robusta | Hustedt | image |
| Achnanthes minutissima var. saprophila | H. Kobayasi & S. Mayama | Jap. J. Phycol. | 30: 195, fig. 2 | 1982 |
| Achnanthes minutissima var. saprophila | H. Kobayasi | image |
| Achnanthes minutissima var. scotica | Lange-Bertalot | image |
| Achnanthes minutissima var. scotica | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 106, pl. 55: figs. 4-12; pl. 57: fig. 11; pl. 67: figs. 35, 36 | 1989 |
| Achnanthes minutissima var. subrobusta | R. Maillard | Cah. O.R.S.T.O.M., Sér. Hydrobiol. | 12: 149, pl. I: fig. 9 | 1979 |
| Achnanthes miota | J.R. Carter & Denny; | image |
| Achnanthes miota | J.R. Carter & P. Denny | Beih. Nova Hedwigia | 73: 286, pl. 1: fig. 9 | 1982 |
| Achnanthes mirabilis | Proshkina-Lavrenko | image |
| Achnanthes misionera | Franquelli | image |
| Achnanthes modesta | É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 4: 19, fig. 30 | 1952 |
| Achnanthes modesta | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Biol. Vég. | 5: 22, pl. III: fig. 22 | 1955 |
| Achnanthes modesta | Manguin | image |
| Achnanthes modesta | Manguin | image |
| Achnanthes modestiformis | H. Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 107 | 1989 |
| Achnanthes modestiformis | Lange-Bertalot | image |
| Achnanthes modica | Hustedt | Bot. Not. | 1952: 388, figs. 72-75 | 1952 |
| Achnanthes mollis | Krasske | image |
| Achnanthes monela | M.H. Hohn & J. Hellerman | Trans. Amer. Microscop. Soc. | 82: 274, pl. I: figs. 31, 32 | 1963 |
| Achnanthes montana | Krasske | Bot. Arch. | 27: 350, fig. 8 | 1929 |
| Achnanthes montana var. norvegica | Hustedt | image |
| Achnanthes montana var. tropica | Hustedt | Arch. Hydrobiol. Suppl. | 16: 380, figs. in A. Schmidt's Atlas pl. 409: figs. 58-63 (1937) | 1939 |
| Achnanthes muelleri | Carlson | image |
| Achnanthes muelleri | G.W.F. Carlson | Wiss. Ergeb. Schwed. Südpolar-Exped. 1901-1903 | 4{14}: 23, pl. 3: figs. 5-7 | 1913 |
| Achnanthes multiarticulata | C. Agardh | image |
| Achnanthes muscorum | M. Peragallo | image |
| Achnanthes muscorum var. elliptica | J. Frenguelli & H.A. Orlando | Publ. Inst. Antárt. Argent. | 5: 79, pl. I: figs. 37, 38 | 1958 |
| Achnanthes muscorum var. minor | M. Peragallo | image |
| Achnanthes nagpurensis | Sarode & Kamat | image |
| Achnanthes namae | Giffen | image |
| Achnanthes nana | F. Meister | Ber. Schweiz. Bot. Ges. | 44: 88, fig. 2 | 1935 |
| Achnanthes nana | Meister | image |
| Achnanthes nathorstii_('Nathorsti') | J. Brun | Bih. K. Svenska Vet.-Akad. Handl. | 26{Afd. III, 18}: 6, pl. 2: figs. 20-22 | 1901 |
| Achnanthes nathorstii_('nathorsti') | J. Brun | image |
| Achnanthes natrata | J.R. Carter | image |
| Achnanthes navalis | Giffen | Bot. Mar. | 19: 381, pl. I: figs. 1, 2 | 1976 |
| Achnanthes naviformis | B. Van de Vijver & L. Beyens in B. Van de Vijver, Y. Frenot, & L. Beyens | Biblioth. Diatomol. | 46: 16, pl. 21 | 2002 |
| Achnanthes neocaledonica | É. Manguin ex H. Lange-Bertalot & A. Steindorf in G. Moser, A. Steindorf, & H. Lange-Bertalot | Biblioth. Diatomol. | 32: 38, pl. 1: figs. 19-27 | 1995 |
| Achnanthes neocaledonica | É. Manguin | Mém. Mus. Natl. Hist. Nat. [Paris], Sér. B, Bot. | 12: 16, pl. I: fig. 14 | 1962 |
| Achnanthes neocaledonica | E. Manguin ex Kociolek & Reviers | Cryptogamie: Algologie | 17: 198 | 1996 |
| Achnanthes neocaledonica | Manguin | image |
| Achnanthes neoskvortzowii | Simonsen | Atlas & Cat. Diatom Types Hustedt: | 59, pl. 419: figs. 14-17 in A. Schmidt's Atlas (1958) | 1987 |
| Achnanthes nikiskii | J.L. Stone in McLaughlin & Stone | Beih. Nova Hedwigia | 82: 14, pl. 1: figs. 13, 14 | 1986 |
| Achnanthes ninckei | P. Guermeur & E. Manguin | Österr. Bot. Z. | 100: 541, figs. 10, 11 | 1953 |
| Achnanthes nitida | Cleve-Euler | image |
| Achnanthes nitidiformis | H. Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 109, pl. 74: figs. 19-24 | 1989 |
| Achnanthes nitidiformis | Lange-Bertalot | image |
| Achnanthes nivellis | Fusey | image |
| Achnanthes nobile | P. Schulz | image |
| Achnanthes nodeana | Skvortzov | image |
| Achnanthes nodosa | A. Cleve | Bih. Kongl. Svenska Vetensk.-Akad. Handl. | 26(Afd. III, \f210\fP): 13, fig. 8 | 1900 |
| Achnanthes nollii | O. Bock & W. Bock | Nachrichten des Naturwissenschaftlichen Museums der Stadt Aschaffenburg | 38: 54, pl. 2: figs. 1, 2; pl. 5: figs. 7-9 | 1953 |
| Achnanthes norvegica | Hustedt | image |
| Achnanthes obesa | (Greville) C. Riaux-Gobin, P. Compère, F. Hinz & L. Ector | Phytotaxa | 227: 112 | 2015 |
| Achnanthes obliqua f. major_('maior') | Foged | image |
| Achnanthes obliqua | Turpin | Mém. Mus. Hist. Nat. [Paris] | 16: 312, pl. 13: fig. 9 | 1828 |
| Achnanthes oblonga | E. Manguin ex Kociolek & Reviers | Cryptogamie: Algologie | 17: 178 | 1996 |
| Achnanthes oblonga | E. Manguin | Rev. Alg. n.s. | 5: 272, pl. I(26): figs. 35, 36 | 1961 |
| Achnanthes oblonga | Manguin | image |
| Achnanthes oblongella | Østrup | Bot. Tidsskr. | 25: 34, pl. I: fig. 9 | 1903 |
| Achnanthes oblongella | Oestrup | image |
| Achnanthes obscura | (Krasske) H. Lange-Bertalot & M. Willmann in H. Lange-Bertalot et al. | Iconographia Diatomologica | 3: 54 | 1996 |
| Achnanthes obtusa | Ehrenberg | image |
| Achnanthes occulta | Ralbe | image |
| Achnanthes ocellata | Manguin | image |
| Achnanthes octalterna | Turpin | image |
| Achnanthes oculata f. rostrata | Hustedt | image |
| Achnanthes oculata | Hustedt | Bot. Not. | 1952: 390, figs. 91-94 | 1952 |
| Achnanthes oestrupii | (Cleve-Euler) Hustedt | Süsswasser-Flora Mitteleuropas | 10: 207, fig. 301 | 1930 |
| Achnanthes oestrupii var. aperta | (J.R. Carter) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 113 | 1989 |
| Achnanthes oestrupii var. bicapitata | Cleve-Euler | image |
| Achnanthes oestrupii var. ininuta | Skvortzov | image |
| Achnanthes oestrupii var. lanceolata | Hustedt ex R. Simonsen | Atlas & Cat. Diat. Types Hustedt: | 231, pl. 336: figs. 29-31 | 1987 |
| Achnanthes oestrupii var. nipponica | Skvortzov & Noda | image |
| Achnanthes oestrupii var. parvula | Patrick | image |
| Achnanthes oestrupii var. parvula | R. Patrick | Farlowia | 2: 169, pl. I: figs. 6, 7 | 1945 |
| Achnanthes oestrupii var. pungens | (Cleve-Euler) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 113 | 1989 |
| Achnanthes oestrupii_('Östrupii') | Cleve-Euler | Kongl. Svenska Vet. Akad. Handl., ser. 4, | 4(5): 16, fig. 509 Aa | 1953 |
| Achnanthes okamurae | Skvortzov | image |
| Achnanthes okunoi | (Hustedt) H. Tanaka | Atlas of Freshwater Fossil Diatoms in Japan, including related recent taxa: | 340, 342 | 2014 |
| Achnanthes okunoi | (Hustedt) R. Simonsen | Phycologia | 27: 307 | 1988 |
| Achnanthes oregonensis | Riznyk | image |
| Achnanthes orellana | Hohn | image |
| Achnanthes orientalis | Hustedt | image |
| Achnanthes orientalis | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 390, fig. 838 | 1933 |
| Achnanthes orientalis | Meister | image |
| Achnanthes orientalis | P. Petit | image |
| Achnanthes ostenii | J. Frenguelli | image |
| Achnanthes ostenii var. mesogongyla | J. Frenguelli | Ostenia [Estud. Bot. Región Uruguaya 13]: | 128, figs. 14, 15 | 1933 |
| Achnanthes ostenii var. parva | J. Frenguelli | Ostenia [Estud. Bot. Región Uruguaya 13]: | 128, fig. 16 | 1933 |
| Achnanthes ostenii_(`osteni') | J. Frenguelli | Ostenia [Estud. Bot. Región Uruguaya 13]: | 127, figs. 9-13 | 1933 |
| Achnanthes pachypus | Montagne | image |
| Achnanthes pachypus var. genuflexa | (Kützing) Rabenhorst | image |
| Achnanthes pagesii | M. Peragallo | image |
| Achnanthes palustris | P. Fusey | image |
| Achnanthes palustris var. ovalis | P. Fusey | image |
| Achnanthes pamirensis | Hustedt | image |
| Achnanthes pantocsekii | Hajos | image |
| Achnanthes paradoxa | Ehrenberg | image |
| Achnanthes parallela | Castracane | image |
| Achnanthes parallela | J.R. Carter | image |
| Achnanthes parexigua | D. Metzeltin & H. Lange-Bertalot in H. Lange-Bertalot (ed.) | Iconographia Diatomologica | 5: 19, pl. 67: figs. 1-11; pl. 68: figs. 1-3 | 1998 |
| Achnanthes parvula | Kützing | image |
| Achnanthes parvula | Kützing | image |
| Achnanthes parvula | Kützing msc. | image |
| Achnanthes pelta | Hohn & Hallerman | image |
| Achnanthes pennaeformis | Greville | image |
| Achnanthes pennata | Greville | image |
| Achnanthes penniformis_('pennaeformis') | Greville | Trans. Bot. Soc. Edinburgh | 8: 438, pl. VI: figs. 11-13 | 1866 |
| Achnanthes peragalloi f. borealis | Foged | image |
| Achnanthes peragalloi var. fossilis | Tempère & Peragallo | Diat. Monde Entier, ed. 2: | 113 | 1909 |
| Achnanthes peragalloi var. lanceolata | Skvortzov & Meyer | image |
| Achnanthes peragalloi var. nipponica | Skvortzov | image |
| Achnanthes peragalloi var. parvula | (Patrick) Reimer | image |
| Achnanthes peragalloi_('peragalli') | J. Brun & Héribaud in Héribaud | Diat. Auvergne: | 50, pl. I: fig. 4 | 1893 |
| Achnanthes peragalloi_('peragalli') | J. Brun & Heribaud | image |
| Achnanthes perfida | J.R. Carter | image |
| Achnanthes pericava | J.R. Carter | Nova Hedwigia | 11: 447, pl. 60(1): figs. 5-8 | 1966 |
| Achnanthes peridotitica | G. Moser, H. Lange-Bertalot & D. Metzeltin | Biblioth. Diatomol. | 38: 85, pl. 18: figs. 1-9 | 1998 |
| Achnanthes perminuta | Ostrup | image |
| Achnanthes perpusilla | (Østrup) H. Lange-Bertalot in H. Lange-Bertalot & G. Moser | Biblioth. Diatomol. | 29: 96 | 1994 |
| Achnanthes perturba | Van Landingham | image |
| Achnanthes petersenii | Hustedt | image |
| Achnanthes petersenii_('peterseni') | Hustedt | Bot. Arch. | 38: 179, figs. 10-14 | 1936 |
| Achnanthes petitii | Aleem | image |
| Achnanthes philippinica | Skvortzov | image |
| Achnanthes piafica | J.R. Carter & Denny | Beih. Nova Hedwigia | 73: 286, plate 1: fig. 10 | 1982 |
| Achnanthes pictii | J.R. Carter | image |
| Achnanthes pinnata | Hustedt | image |
| Achnanthes pinnata var. capensis | Cholnoky | image |
| Achnanthes pinnata var. japonica | Hustedt | image |
| Achnanthes pirogueana f. capitata | H. Lange-Bertalot & A. Steindorf in G. Moser, A. Steindorf, & H. Lange-Bertalot | Biblioth. Diatomol. | 32: 40, pl. 2: figs. 18-26 | 1995 |
| Achnanthes pirogueana | R. Maillard ex H. Lange-Bertalot & A. Steindorf in Moser, Steindorf, & Lange-Bertalot | Biblioth. Diatomol. | 32: 39 | 1995 |
| Achnanthes pirogueana | R. Maillard | Cah. O.R.S.T.O.M., Sér. Hydrobiol. | 12: 149, pl. I: fig. 8 | 1979 |
| Achnanthes placentuloides | (Guslakov) A. Witkowski & H. Lange-Bertalot in Witkowski, Lange-Bertalot & Metzeltin | Icon. Diatomol. | 7: 93 | 2000 |
| Achnanthes plana | J.R. Carter | image |
| Achnanthes plitvicensis | Hustedt | image |
| Achnanthes ploenensis | Hustedt | image |
| Achnanthes ploenensis var. gessneri | (Hustedt) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 122 | 1989 |
| Achnanthes ploenensis var. woldstedtii | (Hustedt) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 121 | 1989 |
| Achnanthes ploenensis_(`plönensis') | Hustedt in Pascher | Süssw.-Fl., ed. 2, | 10: 199, fig. 280 | 1930 |
| Achnanthes polaris | Østrup | Medd. Gronland | 18: 408, pl. VII: fig. 86 | 1895 |
| Achnanthes polaris | Ostrup | image |
| Achnanthes polynesica | H. Lange-Bertalot & M. Werum in M. Werum & H. Lange-Bertalot | Iconogr. Diatomol. | 13: 124, pl. 13: figs. 1-7; pl. 14: figs. 1-4 | 2004 |
| Achnanthes poretzkii | Jasnitsky | image |
| Achnanthes poretzkii var. gracilis | Jasnitsky | image |
| Achnanthes portae | Cholnoky | image |
| Achnanthes praecipua | E. Reichardt | Proc. Int. Diat. Symp. | 9: 391, pls. 1, 2 | 1988 |
| Achnanthes prava | Sovereign | image |
| Achnanthes procera | Hustedt | image |
| Achnanthes profunda | Skvortzov | image |
| Achnanthes prominula | Z. Levkov & S. Tofilovska in Tofilovska et al. | Fottea | 14: 19, figs. 16-18 | 2014 |
| Achnanthes promunturii | Giffen | Bot. Mar. | 13: 88, figs. 1-4 | 1970 |
| Achnanthes pseudo-obliqua | H. Kobayasi | image |
| Achnanthes pseudoaffinis | R. Maillard | Cah. O.R.S.T.O.M., Sér. Hydrobiol. | 12: 149, pl. I: fig. 12 | 1979 |
| Achnanthes pseudoaffinis var. capitata | R. Maillard | Cah. O.R.S.T.O.M., Sér. Hydrobiol. | 12: 150, pl. I: fig. 13 | 1979 |
| Achnanthes pseudoantiqua | M. Peragallo | image |
| Achnanthes pseudobiasolettiana | Gandhi | image |
| Achnanthes pseudobiceps | H. Håkansson | Bot. Not. | 127: 373, figs. 1, 2 | 1974 |
| Achnanthes pseudobiceps | H. Håkansson | image |
| Achnanthes pseudobliqua | R. Simonsen in Hinz, Simonsen, & Crawford | Diatom Res. | 27: 82 | 2012 |
| Achnanthes pseudobliqua | R. Simonsen | Kieler Meeresf. | 16: 127, pl. 1: figs. 5-7 | 1960 |
| Achnanthes pseudobliqua | Simonsen | image |
| Achnanthes pseudobrevipes | Aleem | image |
| Achnanthes pseudocoarctata | Z. Levkov & S. Tofilovska in Tofilovska et al. | Fottea | 14: 17, figs. 7-10 | 2014 |
| Achnanthes pseudoconspicua | Foged | Nova Hedwigia | 22: 273, pl. I: fig. 4 | 1972 |
| Achnanthes pseudogrimmei | Cholnoky | image |
| Achnanthes pseudogroenlandica | Hendey | image |
| Achnanthes pseudohexagona | Hustedt | image |
| Achnanthes pseudohungarica | Cholnoky-Pfannkuche | image |
| Achnanthes pseudohustedtii | H. Kobayasi | image |
| Achnanthes pseudoinflata | M. Rybak, Ł. Peszek, Ł. Skoczylas, L. Ector & C.E. Wetzel in Rybak et al. | Diversity | 12{375}: 3, figs. 1-3 | 2020 |
| Achnanthes pseudolanceolata | E. Manguin | Mém. Mus. Natl. Hist. Nat. [Paris], Sér. B, Bot. | 12: 16, pl. I: fig. 15a-b | 1962 |
| Achnanthes pseudolanceolata | Hustedt | image |
| Achnanthes pseudolanceolata | Manguin | image |
| Achnanthes pseudolinearis | Hustedt | Int. Rev. Gesamten Hydrobiol. | 42: 39, figs. 49-53 | 1942 |
| Achnanthes pseudolongipes | K. Toyoda & T. Nagumo in K. Toyoda, T. Nagumo & D.M. Williams | Diatom Research | 25: 186, figs. 1-28 | 2010 |
| Achnanthes pseudopinnata | Foged | image |
| Achnanthes pseudopunctulata | R. Simonsen in Hinz, Simonsen, & Crawford | Diatom Res. | 27: 82 | 2012 |
| Achnanthes pseudopunctulata | R. Simonsen | Kieler Meeresf. | 15: 75, pl. 10: figs. 25, 26 | 1959 |
| Achnanthes pseudopunctulata | Simonsen | image |
| Achnanthes pseudoseminulum | Cleve-Euler | image |
| Achnanthes pseudosolea | R. Simonsen in Hinz, Simonsen, & Crawford | Diatom Res. | 27: 82 | 2012 |
| Achnanthes pseudosolea | R. Simonsen | Kieler Meeresf. | 15: 75, pl. 10: figs. 22-24 | 1959 |
| Achnanthes pseudosolea | Simonsen | image |
| Achnanthes pseudosuchlandtii | E. Manguin ex Kociolek & Reviers | Cryptogamie: Algologie | 17: 179 | 1996 |
| Achnanthes pseudosuchlandtii | Manguin | image |
| Achnanthes pseudosuchlandtii_('pseudosuchlandti') | E. Manguin | Rev. Alg. n.s. | 5: 272, pl. I(26): fig. 37, 38 | 1961 |
| Achnanthes pseudoswazi | J.R. Carter | image |
| Achnanthes pseudoswazi | J.R. Carter | J. Quekett Microscop. Club | 29: 201, fig. 5 | 1963 |
| Achnanthes pseudotanensis | Cleve-Euler | Kongl. Svenska Vet. Akad. Handl., ser. 4, | 4{5}: 25, figs. 524 | 1953 |
| Achnanthes pulchella | Heiden & Kolbe | image |
| Achnanthes pulvisculus_('pulviscula') | Cholnoky | image |
| Achnanthes punctata | Round | image |
| Achnanthes punctifera | Hustedt | Duke Univ. Mar. Stat. Bull. | 6: 18, pl. 5: figs. 26-28 | 1955 |
| Achnanthes punctulata | Patrick & Freese | image |
| Achnanthes punctulata | R. Patrick & Freese | Proc. Acad. Nat. Sci. Philadelphia | 112: 167, pl. 1: fig. 7 | 1961 |
| Achnanthes punctulata | R. Simonsen | image |
| Achnanthes punctulata | R. Simonsen in Hinz, Simonsen, & Crawford | Diatom Res. | 27: 83 | 2012 |
| Achnanthes punctulata | R. Simonsen | Kieler Meeresf. | 15: 75, pl. 10: figs. 14-17 | 1959 |
| Achnanthes pusilla | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 23 (illustr. in Van Heurck, Syn. Diat. Belgique: pl. XXVII: figs. 33, 34. 1880) | 1880 |
| Achnanthes pusilla var. crassa | (Hustedt) Lange-Bertalot & Ruppel | image |
| Achnanthes pusilla var. petersenii | (Hustedt) Lange-Bertalot & Ruppel | image |
| Achnanthes pusilla var. procera | (Hustedt) Lange-Bertalot | image |
| Achnanthes pusilla | Woodhead & Tweed | image |
| Achnanthes pyrenaica | Hustedt | Ber. Deutsch. Bot. Ges. | 56: 554, pl. XXV: figs. 5-10 | 1939 |
| Achnanthes pyropa | J.R. Carter | image |
| Achnanthes quadralterna | Turpin | image |
| Achnanthes quadratarea | (Ostrup) R. Ross | image |
| Achnanthes quadratarea var. fennica | (Cleve-Euler) R. Ross | image |
| Achnanthes quadricauda | Turpin | image |
| Achnanthes quadrijuga | Turpin | image |
| Achnanthes quadripunctata | D.R. Oppenheim | Canad. J. Bot. | 72: 1742, figs. 26-29, 63-66 | 1995 |
| Achnanthes radiata_('radiatus') | Hohn & Hellerman | image |
| Achnanthes ramosa | Crouan frat. | image |
| Achnanthes ranomafanensis | Manguin | image |
| Achnanthes rara | Jurilj | image |
| Achnanthes rautenbachiae | Cholnoky | image |
| Achnanthes recava | Hohn & Hellerman | image |
| Achnanthes rechtensis | L. Leclercq | Bull. Jard. Bot. Natl. Belgique | 53: 501, fig. 5 | 1983 |
| Achnanthes recurva | Ehrenberg | image |
| Achnanthes recurvata | Hustedt | image |
| Achnanthes reidensis | Foged | image |
| Achnanthes reimeri | Camburn | image |
| Achnanthes reimeri | K.E. Camburn in Camburn, Lowe & Stoneburner | Nova Hedwigia | 30: 153, pl. IV: figs. 53-55 | 1978 |
| Achnanthes renei | H. Lange-Bertalot & R. Schmidt in R. Schmidt, R. Mäusbacher, & J. Müller | J. Paleolimnol. | 3: 64, fig. 6o-t | 1990 |
| Achnanthes reversa | Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 130 | 1989 |
| Achnanthes rhombica | Ostrup | image |
| Achnanthes rhombica | Skabitschevsky | image |
| Achnanthes rhombica | Skabitschevsky | Nov. Sist. Nizsh. Rast. [Bot. Inst. Akad. Nauk SSSR] | 24: 74, fig. 1, 8, 9 | 1987 |
| Achnanthes rhombica | Voigt | image |
| Achnanthes rhomboides | Ehrenberg | image |
| Achnanthes rhynchocephala | Cleve-Euler | image |
| Achnanthes ricula | M.H. Hohn & J. Hellerman | Trans. Amer. Microscop. Soc. | 82: 276, pl. I: figs. 41, 42 | 1963 |
| Achnanthes rivularia | Frenguelli | Physis | 8: 163, pl. I: fig. 25 | 1925 |
| Achnanthes rollae | Suxena & Venkateswarlu | image |
| Achnanthes rosenstockii | H. Lange-Bertalot in H. Lange-Bertalot & Krammer | Biblioth. Diatom. | 18: 131, pl. 15: fig. 1; pl. 61: figs. 1-17 | 1989 |
| Achnanthes rosenstockii | Lange-Bertalot | image |
| Achnanthes rosenstockii var. sinepuncta | Lange-Bertalot | image |
| Achnanthes rosenstockii var. sinepuncta | Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 65 | 1991 |
| Achnanthes rossii | Hustedt | Arch. Hydrobiol. | 48: 467, figs. 12-20 | 1954 |
| Achnanthes rostellata | A. Cleve-Euler | Soc. Sci. Fenn., Comment. Biol. | 4{14}: 41, fig. 50 | 1934 |
| Achnanthes rostellata | Cleve-Euler | image |
| Achnanthes rostrata | Østrup | Bot. Tidsskr. | 25: 35, pl. I: fig. 11 | 1903 |
| Achnanthes rostrata | Ostrup | image |
| Achnanthes rostrata | Second card | image |
| Achnanthes rostrata var. magna | F. Straub | Bull. Soc. Neucha\*^teloise Sci. Nat. | 108: 139, fig. 3:35, 36; fig. 4:53-56; fig. 5:63; fig. 8:105; fig. 9:121; fig. 10:140-144; 55b, 142b | 1985 |
| Achnanthes rostrata var. minor | (P. Schulz) F. Straub | Bull. Soc. Neucha\*^teloise Sci. Nat. | 108: 139 | 1985 |
| Achnanthes rupestoides | Hohn | image |
| Achnanthes rupestoides var. uniseriata | H. Lange-Bertalot & Monnier in Monnier | Bull. Soc. Sci. Nat. Ouest France (Nantes) 2 suppl. Hors Ser.: | 134, figs. 29-34 | 2003 |
| Achnanthes rupestris | Krasske | image |
| Achnanthes sacculus | J.R. Carter | image |
| Achnanthes sacculus_(`saccula') | J.R. Carter in J.R. Carter & A.E. Bailey-Watts | Nova Hedwigia | 33: 535, pl. 24: fig. 6 | 1981 |
| Achnanthes salina | (Kützing) Kützing | Bacillarien: | 77 | 1844 |
| Achnanthes salina | (Kützing) Kützing | image |
| Achnanthes salvadoriana | Hustedt | Comun. Inst. Trop. Invest. Ci. [Univ. El Salvador] | 2: 132, fig. 1 | 1953 |
| Achnanthes sapinii-jaloustrei | Manguin | image |
| Achnanthes saxatilis | W. Bock | image |
| Achnanthes saxonica | Krasske ex Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 403, fig. 854 B | 1933 |
| Achnanthes saxophila | Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 135 | 1989 |
| Achnanthes schmidtiana var. tibetica | Jao & Zhu | image |
| Achnanthes schmidtii | Heiden & Kolbe | image |
| Achnanthes schoemaniana | Giffen | image |
| Achnanthes schulzii | Cleve-Euler | Kongl. Svenska Vetenskapsakad. Handl., ser. 3 [i.e., 5], | 11{2}: 133, fig. 377 [misprinted in text figs. 374a,b] | 1932 |
| Achnanthes schulzii_('schultzii') | B. Cholnoky | Arch. Hydrobiol. | 26: 239, figs.29, 30 | 1933 |
| Achnanthes schwabei | Krasske | Arch. Hydrobiol. | 35: 371, pl. XI: figs. 12-14 | 1939 |
| Achnanthes scotica | (J.R. Carter) H. Lange-Bertalot | Biblioth. Diatomol. | 27: 8 | 1993 |
| Achnanthes scotica | Lange-Bertalot | image |
| Achnanthes scotica | R.J. Flower & V.J. Jones | Diatom Res. | 4: 228, figs. 1-7, 42-53 | 1989 |
| Achnanthes scutiformis var. delicatula | I. Kaczmarska | Acta Palaeobotanica | 25: 45, pl. I: fig. 49-54 | 1985 |
| Achnanthes secretitaeniata | K. Toyoda & Ji. Tanaka in Toyoda, Tanaka, & Williams | J. Jap. Bot. | 84: 20, figs. 1-24 | 2009 |
| Achnanthes semen | Ehrenberg | image |
| Achnanthes semiaperta | Hustedt | image |
| Achnanthes semifasciata | (Ostrup) Max Møller | image |
| Achnanthes separata | Hustedt | image |
| Achnanthes septata | Cleve-Euler | image |
| Achnanthes septata var. doljensis | Jurilj | image |
| Achnanthes septata var. sussedana | Jurilj | image |
| Achnanthes septentrionalis | Østrup | Medd. Gronland | 43: 215. pl. XIII: fig. 21 | 1910 |
| Achnanthes septentrionalis | Ostrup | image |
| Achnanthes septentrionalis var. subcapitata | Ostrup | image |
| Achnanthes seriata | C. Agardh | image |
| Achnanthes seriata var. cuneata | Grunow | image |
| Achnanthes siamexilis | Lange-Bertalot | image |
| Achnanthes siamexilis | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 138, pl. 53: figs. 39-42 | 1989 |
| Achnanthes siamlinearis | Lange-Bertalot | image |
| Achnanthes siamlinearis | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 138, pl. 68: figs. 39-46 | 1989 |
| Achnanthes sibayiensis | R.E.M. Archibald | image |
| Achnanthes sigmoides | Ehrenberg | image |
| Achnanthes silvahercynia | H. Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 139, pl. 71: figs. 30-37; pl. 73: figs. 2-4 | 1989 |
| Achnanthes silvahercynia | Lange-Bertalot | image |
| Achnanthes similis | D. McCall | image |
| Achnanthes similis | Hustedt | image |
| Achnanthes simivalvata | Manguin | image |
| Achnanthes simplex | (M. Peragallo) J. Frenguelli & H.A. Orlando | Publ. Inst. Antárt. Argent. | 5: 79 | 1958 |
| Achnanthes simplex | Hustedt | image |
| Achnanthes sinaensis | (Hustedt) Z. Levkov, S. Tofilovska & C.E. Wetzel in Tofilovska et al. | Fottea | 14: 19 | 2014 |
| Achnanthes skvortzowii | Hustedt | image |
| Achnanthes skvortzowii | Jasnitsky | image |
| Achnanthes smithiana | (Greville) K. Toyoda & D.M. Williams | Diatom | 21: 131 | 2005 |
| Achnanthes solea | Hustedt | image |
| Achnanthes solea | Hustedt | Bot. Not. | 1952: 389, figs. 60, 61 | 1952 |
| Achnanthes solea | S.J.C. Zimmermann | Brotéria, Bot. | 15: 5, pl. I: fig. 3 | 1917 |
| Achnanthes solea | Zimmermann | image |
| Achnanthes sonyda | J.R. Carter | image |
| Achnanthes speciosa | Hustedt | Arch. Hydrobiol. | 18: 238, pl. VII: figs. 5,6 | 1927 |
| Achnanthes sperata | Cholnoky | image |
| Achnanthes sphacelata | J.R. Carter | image |
| Achnanthes squaliformis | R. Majewska & B. Van de Vijver in Majewska et al. | Botanica Marina | 60: 306, figs. 53-82 | 2017 |
| Achnanthes standeri | Cholnoky | Bot. Not. | 110: 343, figs. 3-6 | 1957 |
| Achnanthes stauroneiformis | Prowse | image |
| Achnanthes stauroneiformis | Skabichevskii | image |
| Achnanthes stauroneiformis | Skabichevskij | Bot. Zhurn. SSSR | 21: 707 (R), 719, pl. I: fig. 1 | 1936 |
| Achnanthes stauroneioides | É. Manguin in P. Bourrelly & É. Manguin | Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. | 5: 23, pl. II: fig. 17 | 1955 |
| Achnanthes stauroneioides f. striata | R. Le Cohu & R. Maillard | Ann. Limnol. | 19: 153, fig. 28 | 1984 |
| Achnanthes stauroneioides | Manguin | image |
| Achnanthes stewartii | Patrick | Farlowia | 2: 169-170, pl. II: figs. 1-3 | 1945 |
| Achnanthes stolida | (Krasske) Krasske | image |
| Achnanthes stomatimorpha | Turpin | image |
| Achnanthes stomatimorpha | Turpin | image |
| Achnanthes straubiana | H. Lange-Bertalot | Iconogr. Diatomol. | 2: 26, pl. 78: figs. 21a, b | 1996 |
| Achnanthes striata | Skvortzov & Mayer | image |
| Achnanthes striata | Suhr | image |
| Achnanthes striata | Suhr, inval. | image |
| Achnanthes striata var. rostrata | Skabichevskii | image |
| Achnanthes stroemii | Hustedt | image |
| Achnanthes stroemii_(`strömi') | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 393, fig. 841 B | 1933 |
| Achnanthes subaffinis | Cholnoky | image |
| Achnanthes subaffinis var. dudpokharii | Suxena & Venkateswarlu | image |
| Achnanthes subatomoides | (Hustedt) Lange-Bertalot & Archibald | image |
| Achnanthes subatomus | Hustedt | Ber. Deutsch. Bot. Ges. | 56: 554 | 1939 |
| Achnanthes subconstricta | (Meister) K. Toyoda in K. Toyoda, T. Nagumo, K. Osada, & J. Tanaka | Diatom Research | 18: 369 | 2003 |
| Achnanthes subcrassa | R. Maillard ex H. Lange-Bertalot & A. Steindorf in Moser, Steindorf, & Lange-Bertalot | Biblioth. Diatomol. | 32: 41 | 1995 |
| Achnanthes subcrassa | R. Maillard | Cah. O.R.S.T.O.M., Sér. Hydrobiol. | 12: 150, pl. I: fig. 14 | 1979 |
| Achnanthes subcrenulata | Cleve | image |
| Achnanthes subelata | D. Metzeltin, H. Lange-Bertalot, & F. García-Rodríguez | Iconogr. Diatomol. | 15: 23, pl. 30: figs. 7-12 | 2005 |
| Achnanthes subexigua | Hustedt | image |
| Achnanthes subhudsonis | Hustedt | Hedwigia | 63: 144, figs. 9-12 | 1921 |
| Achnanthes subhudsonis var. densestriata | R. Maillard ex H. Lange-Bertalot & A. Steindorf in G. Moser, A. Steindorf, & H. Lange-Bertalot | Biblioth. Diatomol. | 32: 42, pl. 3: figs. 1-9 | 1995 |
| Achnanthes subhudsonis var. densestriata | R. Maillard | Cah. O.R.S.T.O.M., Sér. Hydrobiol. | 12: 150, pl. I: fig. 10 | 1979 |
| Achnanthes subhudsonis var. kraeuselii | (Cholnoky) Cholnoky | image |
| Achnanthes subhyalina | Conger | image |
| Achnanthes subhyalina | Johannes, inval. | image |
| Achnanthes sublaevis | Hustedt | image |
| Achnanthes sublaevis var. crassa | C.W. Reimer in Patrick & Reimer | Monogr. Acad. Nat. Sci. Philadelphia | 13: 262, pl. 17: figs. 5, 6 | 1966 |
| Achnanthes sublevanderi | Manguin | Ann. Géol. Service des Mines | 18: 98, pl. III: fig. 47 | 1949 |
| Achnanthes sublinearis | Skvortzov | image |
| Achnanthes sublinearis var. complexa | Skvortzov | image |
| Achnanthes sublinearis var. elliptica | Skvortzov | image |
| Achnanthes sublitoralis | Skabichevskii | image |
| Achnanthes sublitoralis | Skabichevskij | Ukr. Bot. Zhurn. | 33: 269, figs. 5, 6. | 1976 |
| Achnanthes submarina | Hustedt in Gessner & Vareschi | Ergeb. Deutsch. Limnol. Venezuela-Exped. 1952 | 1: 110, text-figs. [Abb.] 26-28 | 1956 |
| Achnanthes submontana | Gandhi | image |
| Achnanthes subrostrata | Hustedt | Arch. Hydrobiol. | 39: 98, figs. 6-9 | 1942 |
| Achnanthes subrostrata var. appalachiana | K.E. Camburn & R.L. Lowe | Castanea | 43: 251, figs. 1-11 | 1979 |
| Achnanthes subrostrata var. appalachiana | K.E. Camburn | image |
| Achnanthes subsalsa | J.B. Petersen | Bot. Iceland | 2: 379, fig. 4 | 1928 |
| Achnanthes subsalsoides | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 402, fig. 853 B | 1933 |
| Achnanthes subsaxonica | Cholnoky | image |
| Achnanthes subsenilis var. incurvata | M. Peragallo, err. cit. | image |
| Achnanthes subsessilis | Kützing | Linnaea | 8: 576, pl. 16: fig. 55 | 1834 |
| Achnanthes subsessilis | Kützing | image |
| Achnanthes subsessilis | Kützing | image |
| Achnanthes subsessilis var. constricta | Grunow | image |
| Achnanthes subsessilis var. enervis | V. Petit | image |
| Achnanthes subsessilis var. incurvata | Ostrup | image |
| Achnanthes subsessilis var. loczyi | Pantocsek | image |
| Achnanthes subsessilis var. multiarticulata | Crouan frat. | image |
| Achnanthes subsessilis var. multiarticulata | Kützing | image |
| Achnanthes subsessilis var. ovalis | Dippel | image |
| Achnanthes subsessilis var. subcrenulata | Cleve | image |
| Achnanthes subsessilis var. subventricosa | Grunow | image |
| Achnanthes subsessilis var. tumidula | Grunow | image |
| Achnanthes subsessilis var. tumidula | Grunow | image |
| Achnanthes subtropica | Cholnoky | image |
| Achnanthes suchlandtii | Hustedt | image |
| Achnanthes suchlandtii var. robusta | Hustedt | image |
| Achnanthes suchlandtii_('suchlandti') | Hustedt | Rabenhorst's Krypt.-Fl. | 7{2}: 406, fig. 859 B | 1933 |
| Achnanthes sumera | J.R. Carter | image |
| Achnanthes suspecta | Cleve-Euler | image |
| Achnanthes sutura | J.R. Carter | image |
| Achnanthes swazi | Cholnoky | image |
| Achnanthes taeniata | Grunow | K. Svenska Vet.-Akad. Handl., ser. 4, | 17{2}: 22, pl. I: fig. 5 | 1880 |
| Achnanthes taeniata var. rennellensis | Foged | image |
| Achnanthes taiaensis | J.R. Carter & Denny | Beih. Nova Hedwigia | 73: 288, pl. 1: figs. 11-15 | 1982 |
| Achnanthes tanensis | Cleve-Euler | image |
| Achnanthes tatrensis | K. Starmach | Fragm. Floristic. Geobot. | 19: 501, text-fig. 26, pl. 2: figs. 29, 30 | 1973 |
| Achnanthes taylorensis | D.E. Kellogg, M. Stuiver, T.B. Kellogg, & G.H. Denton | Palaeogeography, Palaeoclimatology & Palaeoecology | 30: 174, pl. I: 3,4; Pl. II: 1,2 | 1980 |
| Achnanthes temperei | M. Peragallo in Tempère & Peragallo | Diat. Monde Entier, ed. 2: | 100 | 1908 |
| Achnanthes tenera | Hustedt | image |
| Achnanthes tenuis | Hustedt | Duke Univ. Mar. Stat. Bull. | 6: 17, pl. 5: figs. 29-31 | 1955 |
| Achnanthes tenuissima | Hustedt | image |
| Achnanthes tenuissima | Hustedt | Arch. Hydrobiol. Suppl. | 15: 196, pl. XIII: figs. 26, 27 | 1937 |
| Achnanthes tenuissima | Pantocsek | image |
| Achnanthes tenuistauros | A. Mann | image |
| Achnanthes tenuistriata | Hustedt | Bot. Not. | 1952: 384, figs. 57-59 | 1952 |
| Achnanthes tenuistriata | Hustedt | A. Schmidt's Atlas Diatom.-Kunde: | pl. 410: figs. 8, 9 | 1937 |
| Achnanthes terrae-novae | Woodhead & Tweed | image |
| Achnanthes teshekpukensis | Foged | image |
| Achnanthes therezienii | H. Lange-Bertalot & K. Krammer | Biblioth. Diatomol. | 18: 150 | 1989 |
| Achnanthes therezienii | Lange-Bertalot & Krammer | image |
| Achnanthes thermalis | (Rabenhorst) Schönfeldt | Diat. German.: | 122 | 1907 |
| Achnanthes thermalis | (Rabenhorst) Schönfeldt | image |
| Achnanthes thermalis var. rumrichorum | Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 152, pl. 77: figs. 30-38; pl. 78: figs. 2-4 | 1989 |
| Achnanthes thienemannii | Hustedt | image |
| Achnanthes thienemannii_(`thienemanni') | Hustedt | Arch. Hydrobiol. | 39: 98, figs. 2-5 | 1942 |
| Achnanthes tibetica | Jao | image |
| Achnanthes trachyderma | (F. Meister) C. Riaux-Gobin, P. Compère, F. Hinz & L. Ector | Phytotaxa | 227: 108 | 2015 |
| Achnanthes triconfusa | VanLandingham | image |
| Achnanthes trigibba | H.P. Gandhi | Beih. Nova Hedwigia | 31: 759, pl. I: figs. 11, 12 | 1970 |
| Achnanthes trigibba | Hustedt | image |
| Achnanthes trigibba | Hustedt ex R. Simonsen | Atlas & Cat. Diat. Types Hustedt: | 230, pl. 336: figs. 10-18 | 1987 |
| Achnanthes trinodis | (Ralfs) Grunow in Van Heurck | Syn. Diat. Belgique: | expl. pl. XXVII: fig. 50 | 1880 |
| Achnanthes trinodis | Ehrenberg | image |
| Achnanthes tropica | Hustedt | Arch. Hydrobiol. Suppl. | 15: 200, pl. XIII: figs. 28-32 | 1937 |
| Achnanthes tuma | J.R. Carter | image |
| Achnanthes tumescens | A.R. Sherwood & R.L. Lowe in R.L. Lowe, A.R. Sherwood, & J.R. Ress | Diatom Research | 24: 331, figs. 20-30 | 2009 |
| Achnanthes turgens | Ehrenberg | image |
| Achnanthes turgida | Ehrenberg | image |
| Achnanthes tylophora | (Reichelt) Cleve | image |
| Achnanthes umara | J.R. Carter | image |
| Achnanthes undata | Meister | image |
| Achnanthes undulans | Molinari & Guiry | Notulae algarum | 184: 1 | 2021 |
| Achnanthes undulata | (Schumann) De Toni | image |
| Achnanthes undulata | Sreenivasa | image |
| Achnanthes undulata | Sreenivasa | Phycologia | 10: 81, figs. 1E, 2D | 1971 |
| Achnanthes undulorostrata | R.L. Lowe & A.R. Sherwood in R.L. Lowe, A.R. Sherwood, & J.R. Ress | Diatom Research | 24: 335, figs. 55-66 | 2009 |
| Achnanthes unipunctata | (Lyngbye) Greville | image |
| Achnanthes utukakensis | Patrick & Freese | image |
| Achnanthes valida | Hustedt ex R. Simonsen | Atlas & Cat. Diat. Types Hustedt: | 232, pl. 337: figs. 7-14 | 1987 |
| Achnanthes vanhoeffenii | Heiden in Heiden & Kolbe | Deutsche Südpolar-Exped. 1901-1903, | 8: 580, pl. 5(35): figs. 105, 105a | 1928 |
| Achnanthes vasta | Pantocsek | image |
| Achnanthes vaszaryi | (Pantocsek) Cleve | image |
| Achnanthes vaszaryi var. oregonica | Cleve | image |
| Achnanthes ventralis | (Krasske) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 155 | 1989 |
| Achnanthes ventralis var. crassa | (C.W. Reimer) Lange-Bertalot in Lange-Bertalot & Krammer | Biblioth. Diatomol. | 18: 155 | 1989 |
| Achnanthes ventricosa | Ehrenberg | image |
| Achnanthes ventricosa | Ehrenberg | image |
| Achnanthes ventricosa | Kützing | image |
| Achnanthes vernalis | Pantocsek | image |
| Achnanthes vexillum | Bory | image |
| Achnanthes vicentii | Manguin | image |
| Achnanthes vistulana | A. Witkowski | Biblioth. Diatomol. | 28: 90, pl. XVII | 1994 |
| Achnanthes wellsiae | Reimer in Patrick & Reimer | Monogr. Acad. Nat. Sci. Philadelphia | 13: 255 | 1966 |
| Achnanthes wickenensis | J.R. Carter | image |
| Achnanthes woldstedtii | Hustedt | image |
| Achnanthes woldstedtii_(`woldstedti') | Hustedt | Abh. Naturw. Ver. Bremen | 33: 453, figs. 7-10 | 1954 |
| Achnanthes wolffii | Foged | image |
| Achnanthes woltereckii var. africana | Cholnoky | image |
| Achnanthes woltereckii var. swazilandica | Cholnoky | image |
| Achnanthes woltereckii_('Wolterecki') | Hustedt | Internat. Rev. Ges. Hydrobiol. | 42: 36, figs. 34-37 | 1942 |
| Achnanthes woodlawnensis | Playfair | image |
| Achnanthes wrightiana | Woodhead & Tweed | image |
| Achnanthes yabe | Skvortzov | image |
| Achnanthes yaquinensis | McIntire & Reimer | image |
| Achnanthes yeniseyensis | Skvortzov | image |
| Achnanthes ziegleri | Lange-Bertalot | Biblioth. Diatomol. | 27: 8, pl. 35: figs. 4-7 | 1993 |
| Achnanthes ziegleri | Lange-Bertalot in Krammer & Lange-Bertalot in H. Ettl et al. (eds.) | Süsswasserfl. Mitteleuropa | 2{4}: 39, pl. 23: figs. 33-38 | 1991 |
| EUACHNANTHES | Schütt | image |
| Monogramma achnanthes | C.G. Ehrenberg | image |
| Stauroneis achnanthes | (Ehrenberg) Kützing | image |
| Stauroptera achnanthes | C.G. Ehrenberg | image |