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Saccifolium (Saccifoliaceae), an endemic of Sierra de la Neblina on the Brazilian-Venezuelan border, is related to a temperate-alpine lineage of Gentianaceae
TLDR
Saccifolium appears to be the sister group of Gentiana and has a basal position in clade E (subtribe Gentianinae Gilg pro parte), a derived clade comprising globally distributed temperate-alpine gentians.
Old-New World and trans-African disjunctions of Thamnosma (Rutaceae): intercontinental long-distance dispersal and local differentiation in the succulent biome.
TLDR
It is concluded that the Old-New World disjunction of Thamnosma is likely the result of long-distance dispersal, thus making a vicariance explanation feasible.
How to get off the mismatch at the generic rank in African Podostemaceae?
TLDR
The Podostemaceae are highly enigmatic plants which are restricted to submerged river-rock habitats and the availability of new material from continental Africa prompted this new study, which proposes restricting Ledermanniella to the species of the former subgenus Ledermannilla, resurrecting Monandriella as monotypic genus, and accepting the genus name Inversodicraea.
Biogeography of Mediterranean Hotspot Biodiversity: Re-Evaluating the 'Tertiary Relict' Hypothesis of Macaronesian Laurel Forests
TLDR
Ancestral trait and area reconstructions indicate that MLF evolved partly from pre-adapted taxa from the Mediterranean, Macaronesia and the tropics, and the establishment of most species in the Plio-Pleistocene suggests that there was a massive species turnover before this time.
Eritreo-Arabian Affinities of the Socotran Flora as Revealed from the Molecular Phylogeny of Aerva (Amaranthaceae)
TLDR
The data point towards colonization via dispersal, rather than a vicariance origin of the island elements, and the overall biogeographic patterns of Aerva show only limited concordance with other taxonomic groups distributed on Indian Ocean islands.
Comparative Morphology and Molecular Systematics of African Podostemaceae‐Podostemoideae, with Emphasis on Dicraeanthus and Ledermanniella from Cameroon
TLDR
Important morphological transformations specific to African podostemoids include a shift from erect to inverted flowers in the spathella and unilocular ovaries arising via septum loss.
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