Editing Incertae sedis (section)

==In formal nomenclature==
When formally naming a taxon, uncertainty about its taxonomic classification can be problematic. The [[International Code of Nomenclature for algae, fungi, and plants]], stipulates that "species and subdivisions of genera must be assigned to genera, and infraspecific taxa must be assigned to species, because their names are combinations", but ranks higher than the [[genus]] may be assigned ''incertae sedis''.<ref name=ICN>{{cite book |author1=McNeill, J. |author2=Barrie, F.R. |author3=Buck, W.R. |author4=Demoulin, V. |author5=Greuter, W. |author6=Hawksworth, D.L. |author7=Herendeen, P.S. |author8=Knapp, S. |author9=Marhold, K. |author10=Prado, J. |author11=Prud'homme Van Reine, W.F. |author12=Smith, G.F. |author13=Wiersema, J.H. |author14=Turland, N.J. |date=2012 |volume=Regnum Vegetabile 154 |title=International Code of Nomenclature for algae, fungi, and plants (Melbourne Code) adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011 |publisher=A.R.G. Gantner Verlag KG  |isbn=978-3-87429-425-6 |url=http://www.iapt-taxon.org/nomen/main.php?page=art3 |access-date=2013-07-28}}</ref>