homotypic synonym, validly published under the ICN (Botanical Code), illegitimate name
Tychonema ingricum (Woronichin 1931) Anagnostidis and Komárek 1988 is illegitimate because it is a homotypic synonym of Phormidium ingricum (Voronichin 1931) Anagnostidis and Komárek 1988, which was proposed in the same publication.Publication:
McNeill J, Barrie FR, Buck WR, Demoulin V, Greuter W, Hawksworth DL, Herendeen PS, Knapp S, Marhold K, Prado J, et al. International Code of Nomenclature for Algae, Fungi and Plants (Melbourne Code). Koeltz Scientific Books, Königstein, 2012.