What is Posidoniaceae?
{{taxobox |name = ''Posidoniaceae'' |image = Posidonia_2_Alberto_Romeo.jpg |image_width = 250px |regnum = [[Plantae]] |unranked_divisio = [[Angiosperms]] |unranked_classis = [[Monocots]] |ordo = [[Alismatales]] |familia = '''Posidoniaceae''' |familia_authority = Hutchinson <!-- |subdivision_ranks = [[Species]] |subdivision = See text. --> }} '''Posidoniaceae''' is a family of [[flowering plant]]s. The [[APG II|APG II system classification]] accept this genus as constituting the sole genus which it places in the order [[Alismatales]], in the clade [[monocots]]. {{biology-stub}} [[category:Alismatales]] [[Category:Plant families]]