Doubtful de acordo com GBIF classification (Possible variant of Licmophora elongata Bailey)
Licmophora gigantea M. Peragallo 1921
Doubtful de acordo com GBIF classification (Possible variant of Licmophora gigantea Mereschkowsky, 1901)
Licmophora gracilis f. elongata (Kützing) Hustedt
Homotypic synonym de acordo com GBIF classification (Originally found in sources as accepted taxon within Licmophora gracilis (Ehrenberg) Grunow, 1867)
Licmophora gracilis var. elongata (Kützing) De Toni 1894
Homotypic synonym de acordo com GBIF classification (Originally found in sources as accepted taxon within Licmophora gracilis (Ehrenberg) Grunow, 1867)
Licmophora lyngbyei f. abbreviata (Agardh) Frenguelli 1930
Homotypic synonym de acordo com GBIF classification (Originally found in sources as synonym of Licmophora abbreviata f. abbreviata)
Licmophora minuta C. Agardh 1827
Doubtful de acordo com GBIF classification (Possible variant of Licmophora minuta Kützing, 1833)
Licmophora paradoxa var. meneghiniana (Kützing)
Homotypic synonym de acordo com GBIF classification (Originally found in sources as accepted taxon within Licmophora paradoxa (Lyngbye) C.Agardh, 1828)
Licmophora rhombica M. Møller 1950
Doubtful de acordo com GBIF classification (Possible variant of Licmophora rhombica Ravanko & Tynni, 1974)
Licmophora socialis Hanna 1970
Doubtful de acordo com GBIF classification (Possible variant of Licmophora socialis Thayer, 1935)