Various hypotheses that seek to explain the rich species diversity of angiosperms relative to
other seed plants are briefly mentioned or reviewed. Of these, the subset that relates …

Flowering and fruiting biology of Magnolia ovata was studied in Atlantic forests in the interior
of São Paulo State, Brazil. The large, bisexual flowers are protogynous, nocturnal …

Angiosperms are frequently assumed to constitute a monophyletic group. Therefore, the
origin of angiosperms is a key question in systematic botany since the answer to this …

Recent advances in phylogeny reconstruction and floral genetics set the stage for new
investigations of the origin and diversification of the flower. We review the current state of …

Abstract An Early Cretaceous mesofossil flora is described from the lower part of the
Almargem Formation (late Barremian-early Aptian) from Torres Vedras (NE of Forte da …

Paleobotanical studies indicate that several isolated and systematically depauperate groups
of extant woody dicotyledons originated in the Mid Cretaceous. The Chloranthaceae had …

A new genus of fossil angiosperms (Protofagacea allonensis gen. et sp. nov.) is established
for staminate flowers with associated fruits and cupules from the Campanian (Late …

Compared to animals, plants have been largely neglected in evolutionary developmental
biology. Mainstream research has focused on developmental genetics, while a rich body of …

The possible evolutionary status of the endothelium, hypostase, pachychalaza and the
recalcitrant viability behaviour of seeds is considered in relation to bitegmy/unitegmy …

Background Phylogenetic analyses of the Annonaceae consistently identify four clades: a
basal clade consisting of Anaxagorea, and a small'ambavioid'clade that is sister to two main …