Ranunculales

Ranunculales
Temporal range: 124–0 Ma Early Cretaceous–Recent
Creeping butercup close 800.jpg
Ranunculus repens
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Ranunculales
Juss. ex Bercht. & J.Presl
Families

See text

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, hellebores, and buttercups.

Taxonomy

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.

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.

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. This is reflected in the subsequent revision of the APG, APG IV (2016).

The analysis revealed that the order consisted of three clades, Eupteleaceae, Papaveraceae and a third clade, considered to be the "core" Ranuculales, consisting of the remaining five families. The phylogeny of the families is shown in the cladogram.

Cladogram of Ranunculales families
Ranunculales

This page was last updated at 2023-05-13 09:01 UTC. Update now. View original page.

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