qnli question: How does the APG system of 1998, with its 2003 and 2009 revisions, treat flowering plants? sentence: The Reveal system treated flowering plants as subdivision Magnoliophytina (Frohne & U. Jensen ex Reveal, Phytologia 79: 70 1996), but later split it to Magnoliopsida, Liliopsida, and Rosopsida.