Orchidaceae show remarkable diversity in pollination strategies, but how these strategies
vary globally is not entirely clear. To identify regions and taxa that are data-rich and lend …

Orchidaceae is the most extensive family of flowering plants. There are approximately
30,000-35,000 species, belonging to 850 genera, dispersed in almost all the ecosystems on …

The construction of classifications, as well as the understanding of biological diversity,
depends upon a careful comparison of attributes of the organisms studied (Stuessy, 1990). It …

Existem visitantes florais que coletam recursos em flores sem realizar polinização, e
também há espécies de plantas que atraem polinizadores sem oferecer qualquer recurso. A …

Phylogeographic studies provide an important framework for investigating the mechanisms
operating during the earliest stages of speciation, as reproductive barriers can be examined …

Species delimitation remains a central problem in systematic, taxonomic and evolutionary
studies. However, the precise delimitation of species depends on the criteria used to identify …

The orchid genus Epidendrum, with 1500 species occurring within the Neotropical region,
represents a very promising model system for evolutionary and ecological studies offering …

Different pre-and postzygotic isolating mechanisms may prevent interspecific gene
exchange in secondary contact zones. Due to the different nature of each isolating barrier …

• Premise of the study: The term colleter is applied to trichomes or emergences positioned
close to developing vegetative and floral meristems that secrete a sticky, mucilaginous …

Background Nectar gain and loss are important flower transitions observed in angiosperms,
and are particularly common in orchids. To understand such transitions, the availability of …