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Plant–hummingbird interactions are considered a classic example of coevolution, a process in which mutually dependent species influence each other's evolution. Plants depend on hummingbirds for pollination, whereas hummingbirds rely on nectar for food. As a step towards understanding coevolution, this review focuses on the macroevolutionary consequences of plant–hummingbird interactions, a relatively...
Aim
There is little consensus on which environmental variables are best at predicting multiple dimensions of diversity. We ask whether there are common environmental correlates of diversity, despite ecological differences, across nine clades of plants and animals distributed along a single rainforest domain. For that, we compare the environmental correlates of species richness, phylogenetic diversity,...
A new species of Bignoniaceae from Brazilian cerrado and caatinga is described and illustrated: Xylophragma tenue. The species is characterized by its slightly bullate leaves, lateral leaflets with asymmetrical base, loosely branched inflorescence, flowers with tubular calyx with a shortly 5-cuspidate and frequently bilabiate rim, infundibuliform corolla, and capsules flat, woody, smooth, and with...
Numerous plant species worldwide including Palicourea marcgravii (Rubiaceae) and Tanaecium bilabiatum (Bignoniaceae) in Brazil cause acute cardiac failure (sudden death) and are known to contain monofluoroacetate (MFA). Other Bignoniaceae species including Fridericia japurensis (Arrabidaea japurensis) are reported to cause sudden death in livestock in the Brazilian state of Roraima and are suspected...
A new species is described, Lundia laevis (Bignoniaceae). This species is distributed in the Brazilian Amazon and is characterized by its glabrescent stem, leaflets, and calyx, and the narrow infundibuliform corolla. A complete description, illustration, and comparisons with similar species are provided.
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