Melosira helvetica (O.F.Müller) Cleve-Euler, 1911 (new combination reference)
Melosira polymopha var. biseriata (Grunow) Bethge, 1925 accepted as
Melosira lyrata var. biseriata Grunow in Van Heurck, 1882 (new combination reference)
Melosira polymorpha H.Bethge accepted as
Gaillonella italica Ehrenberg, 1838 (new combination reference)
Melosira polymorpha f. alpha (Otto Müller) Bethge, 1925 accepted as
Melosira granulata var. alpha Otto Müller, 1903 (new combination reference)
Melosira polymorpha f. alpha Bethge, 1925 (original description)
Melosira polymorpha f. ambigua (Grunow in Van Heurck) Bethge, 1925 (new combination reference)
Melosira polymorpha f. beta Bethge, 1925 (original description)
Melosira polymorpha f. beta (Otto Müller) Bethge, 1925 accepted as
Melosira granulata var. beta Otto Müller, 1903 (new combination reference)
Melosira polymorpha f. crenulata (Ehrenberg) Bethge, 1925 accepted as
Gaillonella crenulata var. crenulata Ehrenberg, 1843 (new combination reference)
Melosira polymorpha f. crenulata (Ehrenberg) Bethge, 1925 accepted as
Gaillonella crenulata var. crenulata Ehrenberg, 1843 (original description)
Melosira polymorpha f. gamma (Otto Müller) Bethge, 1925 accepted as
Melosira granulata var. gamma Otto Müller, 1903 (new combination reference)
Melosira polymorpha f. gamma Bethge, 1925 (original description)
Melosira polymorpha f. goetzeana (Otto Müller) Bethge, 1925 accepted as
Melosira goetzeana f. goetzeana Otto Müller, 1904 (new combination reference)
Melosira polymorpha f. ikapoensis (Otto Müller) Bethge, 1925 accepted as
Melosira ikapoensis var. ikapoensis Otto Müller, 1904 (new combination reference)
Melosira polymorpha f. lacustris (Grunow) Bethge, 1925 accepted as
Melosira lyrata f. lacustris Grunow in Van Heurck, 1882 (new combination reference)
Melosira polymorpha f. minor (Otto Müller) Bethge, 1925 accepted as
Melosira ikapoensis var. minor Otto Müller, 1904 (new combination reference)
Melosira polymorpha f. nyassensis (Otto Muller; Otto Muller) Bethge, 1925 accepted as
Melosira nyassensis var. nyassensis Otto Müller, 1903 (new combination reference)
Melosira polymorpha f. peregrina (Otto Müller) Bethge, 1925 accepted as
Melosira nyassensis f. peregrina Otto Muller, 1904 (new combination reference)
Melosira polymorpha f. plicatella (Otto Müller) Bethge, 1925 accepted as
Melosira italica var. plicatella Otto Müller, 1904 (new combination reference)
Melosira polymorpha f. procera (Otto Müller) Bethge, 1925 accepted as
Melosira ikapoensis var. procera Otto Müller, 1904 (new combination reference)
Melosira polymorpha f. pyxis (Otto Müller) Bethge, 1925 accepted as
Melosira pyxis f. pyxis Otto Müller, 1904 (new combination reference)
Melosira polymorpha f. sulcata (Otto Müller) Bethge, 1925 accepted as
Melosira pyxis var. sulcata Otto Müller, 1904 (new combination reference)
Melosira polymorpha f. tenuis (Kützing) Bethge, 1925 accepted as
Melosira tenuis var. tenuis Kützing, 1844 (original description)
Melosira polymorpha f. tenuis (Kützing) Bethge, 1925 accepted as
Melosira tenuis var. tenuis Kützing, 1844 (new combination reference)
Melosira polymorpha f. tubulosa (Otto Müller) Bethge, 1925 accepted as
Melosira goetzeana f. goetzeana Otto Müller, 1904 (new combination reference)
Melosira polymorpha var. africana (Otto Müller) Bethge, 1925 accepted as
Melosira distans var. africana O.Müller, 1904 (new combination reference)
Melosira polymorpha var. alpigena (Grunow in Van Heurck) Bethge, 1925 (new combination reference)
Melosira polymorpha var. argus (Otto Müller) Bethge, 1925 accepted as
Melosira argus f. argus Otto Müller, 1904 (new combination reference)
Melosira polymorpha var. baikalensis Bethge, 1925 (original description)
Melosira polymorpha var. distans (Ehrenberg) Bethge, 1925 accepted as
Gaillonella distans Ehrenberg, 1837 (new combination reference)
Melosira polymorpha var. granulata (Ehrenberg) Bethge, 1925 accepted as
Gaillonella granulata var. granulata Ehrenberg, 1843 (new combination reference)
Melosira polymorpha var. helvetica (Otto Müller) Bethge, 1925 (new combination reference)
Melosira polymorpha var. herzogii (Lemmermann) Bethge, 1925 accepted as
Melosira herzogii var. herzogii Lemmermann, 1910 (new combination reference)
Melosira polymorpha var. islandica (Otto Müller) Bethge, 1925 (new combination reference)
Melosira polymorpha var. kondeensis (Otto Müller) Bethge, 1925 accepted as
Melosira kondeensis Otto Müller, 1904 (new combination reference)
Melosira polymorpha var. limnetica (Otto Müller) Bethge, 1925 accepted as
Melosira distans var. limnetica Otto Müller, 1904 (new combination reference)
Melosira polymorpha var. lirata (Ehrenberg) Bethge, 1925 (new combination reference)
Melosira polymorpha var. magnusii (Otto Müller) Bethge, 1925 accepted as
Melosira magnusii Otto Müller, 1904 (new combination reference)
Melosira polymorpha var. mbasiensis (Otto Müller) Bethge, 1925 accepted as
Melosira mbasiensis Otto Müller, 1904 (new combination reference)
Melosira polymorpha var. muzzanensis (Meister) Bethge, 1925 accepted as
Melosira muzzanensis Meister, 1912 (new combination reference)
Melosira polymorpha var. nivalis (W. Smith) Bethge, 1925 accepted as
Melosira nivalis W.Smith, 1855 (new combination reference)
Melosira polymorpha var. pfaffiana (Reinsch) Bethge, 1925 accepted as
Melosira pfaffiana Reinsch, 1867 (new combination reference)
Melosira polymorpha var. polymorpha Bethge, 1925 (original description)
Melosira polymorpha var. seriata (Otto Müller) Bethge, 1925 accepted as
Melosira lirata var. seriata Otto Müller, 1898 (new combination reference)
Melosira polymorpha var. solida (Eulenstein manuscript, Grunow) Bethge, 1925 accepted as
Melosira solida var. solida Eulenstein in Grunow in Van Heurck, 1882 (new combination reference)
Melosira polymorpha var. subarctica (Otto Müller) Bethge, 1925 (new combination reference)
Melosira polymorpha var. valida (Grunow in Van Heurck) Bethge, 1925 accepted as
Melosira crenulata var. valida Grunow, 1882 (new combination reference)
Melosira punctulosa Bethge, 1925 (original description)