Petrosaviaceae's the botanical name of a family of flowering plants. Such a family has been recognized by only few taxonomists: the plants involved were usually treated as belonging to the family Liliaceae. The APG II system, of 2003, does recognize this family and assigns it to the clade monocots, unplaced as to order. This family then consists of two genera Japanolirion and Petrosavia. In circumscribing the family in this way, APG II departs from the APG system, of 1998, which treated each of… (More on Petrosaviaceae)