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Phylogenetic Relationships in Euphorbieae (Euphorbiaceae) Based on ITS and ndhF Sequence Data
TLDR
Biogeographical patterns examined in light of the molecular evidence suggest that the tribe Euphorbieae arose in Africa, possibly before the breakup of Gondwanaland, at which time the major lineages of subtribe Euphorbiinae were already present.
Divergent genetic mechanisms underlie reversals to radial floral symmetry from diverse zygomorphic flowered ancestors
TLDR
The results collectively indicate that reversals to similar floral phenotypes in this large tropical angiosperm clade have evolved via different genetic changes from an otherwise highly conserved developmental program.
Generic Relationships and Classification of Tribe Paullinieae (Sapindaceae) with a New Concept of Supertribe Paulliniodae
TLDR
Sapindaceae tribe Paullinieae is newly recognized and morphologically characterized by zygomorphic flowers, thyrses with lateral cincinni, corollas of 4 petals, and alternate leaves with a well-developed distal leaflet.
The submersion of Pedilanthus into Euphorbia (Euphorbiaceae)
TLDR
It is argued that the genera currently segregated from Euphorbia should be included within a classification of Euphorbieae subtribe Euphorbiinae that reflects evolutionary relationships and employs the concept of monophyly.
Two New Loeselia (Polemoniaceae) Species from Michoacán, Mexico
TLDR
Two new species of Loeselia (Polemoniaceae) from central Mexico are described and illustrated, known only from small areas in the Balsas Depression of the state of Michoacán.
Phylogenetics, morphological evolution, and classification of Euphorbia subgenus Euphorbia
TLDR
A phylogenetic analysis of E. Euphorbia is presented, using one nuclear and two plastid regions, for the most complete sampling of molecular sequence data to date and patterns of homoplasy in morphological evolution and general patterns of biogeography are discussed.
The systematic position of Cubanthus and other shrubby endemic species of Euphorbia (Euphorbiaceae) in Cuba
TLDR
The molecular phylogeny supports the hypothesis that section Cubanthus radiated entirely within the Antilles and the nearby Bahamian archipelago and is treated as a section of Euphorbia instead of a separate genus.
Are spurred cyathia a key innovation? Molecular systematics and trait evolution in the slipper spurges (Pedilanthus clade: Euphorbia, Euphorbiaceae).
TLDR
The results confirm previous species designations, indicate higher homoplasy in cyathial than in vegetative features, and suggest a possible Central American origin of the Pedilanthus clade.
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