Premise Eocene floras of Patagonia document biotic response to the final separation of
Gondwana. The conifer genus Araucaria, distributed worldwide during the Mesozoic, has a …

While Psittaciformes (parrots and allies) are well-recognized as highly-mobile seed
predators, their role as seed dispersers has been overlooked until very recently. It remains to …

Abstract Key message In Araucaria angustifolia, the seed scale is part of the ovule, the
female gametophyte presents a monosporic origin and arises from a coenocytic tetrad, and …

Aims Seed dispersal by endozoochory is an important process in plant regeneration and the
establishment of new populations. Seeds with dormancy may especially benefit after …

Retracing past anthropogenic dispersal of culturally important taxa offers insights to the
biogeographic history of species, as well as the history of the people who interacted with …

Interspecific trait divergence may reflect adaptation and reproductive isolation, particularly
after the rapid differentiation that may follow the colonization of new environments. Although …

In fragile ecosystems, the introduction of exotic species could alter some ecological
processes. The Austral parakeet (Enicognathus ferrugineous) shows close ecological and …

Male and female dioecious trees often differ in their sensitivity to environmental stress,
resulting in unbalanced sex ratios that can affect forest regeneration. Dioecious species are …

Abstract Background and Aims The size and shape of reproductive structures is especially
relevant in evolution because these characters are directly related to the capacity for …

Even today, the evolutionary origin of coniferous pollen-cones is still controversial and
conflicting theories about the identity of their microsporangiophores exist. Previous studies …