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Multiple continental radiations and correlates of diversification in Lupinus (Leguminosae): testing for key innovation with incomplete taxon sampling.
TLDR
Bayesian ancestral state reconstructions and BiSSE likelihood analyses of correlated diversification indicated that increased rates of speciation are strongly associated with the derived evolution of perennial life history and invasion of montane ecosystems.
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Chromosome numbers in the genus Mimosa L.: cytotaxonomic and evolutionary implications
TLDR
A possible relation between geography, species distribution, polyploidy and invasiveness was detected, however, further studies based on more accessions, especially from higher latitudes, are required before firm conclusions can be drawn.
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Cytogenetics and Cytotaxonomy of Brazilian Species of Senna Mill. (Cassieae - Caesalpinioideae - Leguminosae)
TLDR
The results, together with literature data, suggest that x=14 is the basic number for the genus, probably a secondary number derived from the x=7 suggested for all Caesalpinioideae, and that the other numbers in the genus represent a disploid series.
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Distribution and traits of climbing plants in subtropical and temperate South America
TLDR
Climbing species richness decreased from subtropical to temperate areas, and there were changes in the taxonomic composition, calling for a re-evaluation of the importance that is given to climbers in regions outside the tropics.
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Chromosome number, karyotype, and taxonomic considerations on the enigmatic Sellocharis paradoxa Taubert (Leguminosae, Papilionoideae, Genisteae)
TLDR
The uniqueness of this taxon, first indicated by its peculiar leaf arrangement, and now supported by its uncommon karyological constitution, strongly suggests that the suprageneric taxonomic position of S. paradoxa should be re-evaluated.
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Three new species of Convolvulaceae Juss. from South America
TLDR
Three new species are described: Calystegia brummittii, Convolvulus ensifolius and Ipomoea mirabilis and descriptions, illustrations and data on species distribution and conservation status are provided.
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Secretory structures of the Adesmia clade (Leguminosae): Implications for evolutionary adaptation in dry environments
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Alkaloids in Erythrina by UPLC-ESI-MS and In Vivo Hypotensive Potential of Extractive Preparations
TLDR
A potent dose-dependent hypotensive effect was observed for E. falcata, which may be related to the route of β-adrenergic receptors, and the chemical composition was based on alkaloids, suggesting the presence of erythristemine and 11β-methoxyglucoerysodine.
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Floral resources used by insects in a grassland community in Southern Brazil
TLDR
The family Asteraceae as a species set was the main floral resource used by insect visitors through the year and has great importance for the maintenance of populations of many species of bees, flies, wasps and butterflies in the studied area.
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Synopsis of Ipomoea L. (Convolvulaceae) species in Rio Grande do Sul State, Brazil.
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