Achnanthidium archibaldianum (Lange-Bertalot) Lange-Bertalot, 1999 represented as
Achnanthes archibaldiana Lange-Bert., 1989 accepted as
Rossithidium archibaldianum (Lange-Bertalot) L.N.Bukhtiyarova, 2008 represented as
Achnanthes archibaldiana Lange-Bert., 1989 (new combination reference)
Achnanthidium arcus (Hustedt) Lange-Bertalot, 1999 represented as
Achnanthes arcus Hust., 1942 (new combination reference)
Achnanthidium biasolettianum (Grunow) Bukhtiyarova, 1995 represented as
Achnanthes biasolettiana var. biasolettiana Grunow represented as
Achnanthes biasolettiana Grunow, 1880 accepted as
Achnanthidium pyrenaicum (Hustedt) H.Kobayasi, 1997 represented as
Achnanthes pyrenaica var. pyrenaica Hustedt, 1939 (new combination reference)
Achnanthidium blancheanum (Maillard) Lange-Bertalot, 1999 represented as
Achnanthes blancheana R.Maillard ex Lange-Bertalot & A. Steindorf, 1995 (new combination reference)
Achnanthidium caledonicum (Lange-Bertalot) Lange-Bertalot, 1999 (new combination reference)
Achnanthidium catenatum (Bily & Marvan) Lange-Bertalot, 1999 represented as
Achnanthes catenata Bily & Marvan, 1959 (new combination reference)
Achnanthidium contrarea (Lange-Bertalot & Steindorf in Moser, Steindorf & Lange-Bertalot) H. Lange-Bertalot, 1999 represented as
Achnanthes contrarea Lange-Bertalot & A.Steindorf, 1995 (new combination reference)
Achnanthidium eutrophilum (Lange-Bertalot) Lange-Bertalot, 1999 represented as
Achnanthes eutrophila Lange-Bertalot, 1996 (new combination reference)
Achnanthidium indicatrix (Lange-Bertalot & Steindorf) Lange-Bertalot, 1999 represented as
Achnanthes indicatrix Lange-Bertalot & A.Steindorf, 1998 (new combination reference)
Achnanthidium koghisense (Moser, Lange-Bertalot & Metzeltin) Lange-Bertalot, 1999 represented as
Achnanthes koghisensis G.Moser, Lange-Bertalot & D.Metzeltin, 1998 (new combination reference)
Achnanthidium koghisense f. angustifasciatum (Gerd Moser, Lange-Bertalot & Metzeltin) Lange-Bertalot, 1999 represented as
Achnanthes koghisensis f. angustifasciata G. Moser, H. Lange-Bertalot & D. Metzeltin, 1998 (new combination reference)
Achnanthidium metaffine (Lange-Bertalot & Steindorf) Lange-Bertalot, 1999 represented as
Achnanthes metaffinis Lange-Bertalot & A.Steindorf, 1995 (new combination reference)
Achnanthidium peridotiticum (Moser, Lange-Bertalot & Metzeltin) Lange-Bertalot, 1999 represented as
Achnanthes peridotitica Moser, Lange-Bertalot & Metzeltin, 1998 (new combination reference)
Achnanthidium pirogueanum (Maillard) Lange-Bertalot, 1999 represented as
Achnanthes pirogueana R.Maillard, 1978 (new combination reference)
Achnanthidium straubianum (Lange-Bertalot) Lange-Bertalot, 1999 represented as
Achnanthes straubiana Lange-Bertalot, 1996 (new combination reference)
Achnanthidium subatomus (Hustedt) Lange-Bertalot, 1999 represented as
Achnanthes subatomus Hustedt, 1939 (new combination reference)
Achnanthidium woltereckii (Hustedt) Lange-Bertalot, 1999 represented as
Achnanthes woltereckii var. wolterecki Hustedt, 1942 (new combination reference)
Nupela butterfassiana (Lange-Bertalot) Lange-Bertalot, 1999 (new combination reference)
Nupela impexiformis (Lange-Bertalot) Lange-Bertalot, 1999 (new combination reference)
Nupela lapidosa (Krasske) Lange-Bertalot, 1999 (new combination reference)
Nupela tropica (Hustedt) Lange-Bertalot, 1999 (new combination reference)
Planothidium apiculatum (Patrick) R.Lowe in Johansen et al., 2004 (new combination reference)
Planothidium aueri (Krasske) H. Lange-Bertalot, 1999 represented as
Achnanthes aueri Krasske, 1949 † (new combination reference)
Planothidium biporomum (M.H.Hohn & Hellerman) Lange-Bertalot, 1999 (new combination reference)
Planothidium boneolanceolatum (Lange-Bertalot) H. Lange-Bertalot, 1999 represented as
Achnantheiopsis borneolanceolata Lange-Bert., 1997 accepted as
(new combination reference)
Planothidium chilense (Hustedt) Lange-Bertalot, 1999 † represented as
Achnanthes chilensis Hustedt, 1927 † (new combination reference)
Planothidium daui (Foged) Lange-Bertalot, 1999 represented as
Achnanthes daui Foged, 1962 (new combination reference)
Planothidium distinctum (Messikommer) Lange-Bertalot, 1999 represented as
Achnanthes distincta Messikommer, 1954 (new combination reference)
Planothidium fonticolanceolatum (Lange-Bertalot & Schimanski) Lange-Bertalot, 1999 represented as
Achnanthes fonticolanceolata Lange-Bertalot & Schimanski, 1989 (new combination reference)
Planothidium frequentissimum (Lange-Bertalot) F.E.Round & Bukhtiyarova, 1996 represented as
Achnanthes lanceolata Lange-Bertalot, 1993 (new combination reference)
Planothidium frequentissimum var. magnum (F.Straub) Lange-Bertalot, 1999 represented as
Achnanthes rostrata var. magna F.Straub, 1985 (new combination reference)
Planothidium frequentissimum var. minus (Schulz-Danzig) Lange-Bertalot, 1999 represented as
Achnanthes lanceolata f. minor Schulz, 1926 (new combination reference)
Planothidium granum (M.H.Hohn & Hellerman) Lange-Bertalot, 1999 represented as
Achnanthes grana Hohn & Hellerman, 1963 (new combination reference)
Planothidium haynaldii (Schaarschmidt) Lange-Bertalot, 1999 (new combination reference)
Planothidium heteromorphum (Grunow) Lange-Bertalot, 1999 represented as
Achnanthes heteromorpha var. heteromorpha Grunow in Cleve & Grunow, 1880 (new combination reference)
Planothidium holstii (Cleve) Lange-Bertalot, 1999 represented as
Achnanthes holstii var. holstii Cleve, 1881 (new combination reference)
Planothidium joursacense (Héribaud-Joseph) Lange-Bertalot, 1999 represented as
Achnanthes joursacense Héribaud-Joseph, 1903 (new combination reference)
Planothidium lanceolatoide (Sovereign) H. Lange-Bertalot, 1999 represented as
Achnanthes lanceolatoides H.E.Sovereign, 1958 (new combination reference)
Planothidium lanceolatum (Brébisson ex Kützing) Bukhtiyarova, 1999 (new combination reference)
Planothidium linkei (Hustedt) Lange-Bertalot, 1999 represented as
Achnanthes linkei var. linkei Hustedt, 1939 (new combination reference)
Planothidium magnificum (Hustedt) Lange-Bertalot, 1999 represented as
Achnanthes magnifica Hustedt, 1952 (new combination reference)
Planothidium marinum (Hustedt) Lange-Bertalot, 1999 represented as
Achnanthes marina Hustedt, 1937 (new combination reference)
Planothidium minutissimum (Krasske) E.A.Morales, 2006 represented as
Achnanthes lanceolata var. minutissima Krasske, 1938 (new combination reference)
Planothidium miotum (Carter & Denny) Lange-Bertalot, 1999 represented as
Achnanthes miota Carter & Denny, 1982 (new combination reference)
Planothidium pericavum (J.R.Carter) Lange-Bertalot, 1999 represented as
Achnanthes pericava J.R.Carter, 1966 (new combination reference)
Planothidium pseudotanense (Cleve-Euler) Lange-Bertalot, 1999 represented as
Achnanthes pseudotanensis A.Cleve-Euler, 1953 (new combination reference)
Planothidium pungens (Cleve-Euler) Lange-Bertalot, 1999 represented as
Achnanthes elliptica var. pungens Cleve-Euler, 1934 represented as
Skabitschewskia pungens (Cleve-Euler) Kulikovskiy & Lange-Bertalot, 2015 (new combination reference)
Planothidium robustius Lange-Bertalot, 1999 (original description)
Planothidium robustum (Hustedt) Lange-Bertalot, 1999 represented as
Achnanthes delicatula var. robusta Hustedt, 1934 (new combination reference)
Planothidium rostratum (Østrup) Lange-Bertalot, 1999 (new combination reference)
Planothidium salvadorianum (Hustedt) Lange-Bertalot, 1999 (new combination reference)
Psammothidium acidoclinatum (Lange-Bertalot) Lange-Bertalot, 1999 represented as
Achnanthes acidoclinata Lange-Bert., 1996 (new combination reference)
Psammothidium chlidanos (Hohn & Hellerman) Lange-Bertalot, 1999 represented as
Achnanthes chlidanos M.H.Hohn & Hellerman, 1963 (new combination reference)
Psammothidium daonense (Lange-Bertalot) Lange-Bertalot, 1999 represented as
Achnanthes daonensis Lange-Bertalot, 1989 (new combination reference)
Psammothidium perpusillum (Østrup) Lange-Bertalot, 1999 represented as
Pinnularia perpusilla Østrup, 1910 (new combination reference)
Psammothidium rechtensis (Leclercq) Lange-Bertalot, 1999 represented as
Achnanthes rechtensis Leclercq, 1983 (new combination reference)
Psammothidium rosenstockii (Lange-Bertalot) Lange-Bertalot, 1999 represented as
Achnanthes rosenstockii Lange-Bertalot, 1989 (new combination reference)