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Ranunculales is an order of flowering plants. Of necessity it contains the family Ranunculaceae, the buttercup family, because the name of the order is based on the name of a genus in that family. Ranunculales belongs to a paraphyletic group known as the basal eudicots. It is the most basal clade in this group; in other words, it is sister to the remaining eudicots. Widely known members include poppies, barberries, and buttercups. ==Taxonomy== Historically the term Ranales was used to include the Ranunculaceae and related families, as described by Bentham and Hooker. This became replaced with Ranunculales by Melchior in 1964. The Angiosperm Phylogeny Group recognized seven families in Ranunculales in their APG III system, published in 2009. In the preceding APG II system, they offered the option of three segregate families as shown below.〔 * order Ranunculales *: family Berberidaceae *: family Circaeasteraceae *:: (family Kingdoniaceae ) *: family Eupteleaceae *: family Lardizabalaceae *: family Menispermaceae *: family Papaveraceae *:: (family Fumariaceae ) *:: (family Pteridophyllaceae ) *: family Ranunculaceae Note: "+ ..." = optionally separate family (that may be split off from the preceding family). Under this definition, well-known members of Ranunculales include buttercups, clematis, columbines, delphiniums, and poppies. The Cronquist system (1981) also recognised the order, but placed it in the subclass Magnoliidae, in class Magnoliopsida (dicotyledons ). It used this circumscription: * order Ranunculales *: family Ranunculaceae *: family Circaeasteraceae *: family Berberidaceae *: family Sargentodoxaceae *: family Lardizabalaceae *: family Menispermaceae *: family Coriariaceae *: family Sabiaceae In the Cronquist system, the Papaveraceae and Fumariaceae (including the plants in the optional family Pteridophyllaceae) were treated as a separate order Papaverales, placed in this same subclass Magnoliidae. The Cronquist circumscription of Ranunculales is now known to be polyphyletic. Sabiaceae is in a clade of basal eudicots separate from Ranunculales. Coriariaceae is now placed in the order Cucurbitales. A phylogeny of Ranunculales was published in 2009, based on molecular phylogenetic analysis of DNA sequences. The authors of this paper revised the subfamilies and tribes of the order. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ranunculales」の詳細全文を読む スポンサード リンク
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