The oldest and biggest angiosperm trees in the world, the African baobabs, are dying or already dead, an international team of scientists has found. The scientists added that the spate of deaths, ...

Aim: Xylem structures are closely related to a tree's hydraulic efficiency and mechanical stability, both of which affect the life history and ecological strategy of a species. Although mechanical ...

The angiosperms are the most recently derived plant group, originating some 160 million years ago and becoming widespread around 120 million years ago. Angiosperm means “enclosed seed,” referring to ...

The discovery of exceptionally well-preserved, tiny fossil seeds dating back to the Early Cretaceous corroborates that flowering plants were small opportunistic colonizers at that time, according to a ...

They are very tiny, but they are a key source of information when it comes to Earth's evolutionary history: pollen grains are usually no larger than 20 micrometers, or 0.02 millimeters. Using these ...

Question: Global-scale forest censuses provide an opportunity to understand diversification processes in woody plant communities. Based on the climatic or geographic filtering hypotheses associated ...

Researchers report Cretaceous insects trapped in amber from Ecuador’s Napo region, revealing a 112-million-year-old humid ...

A rooted phylogenetic tree of functionally characterized TPSs in angiosperms. The tree encompasses TPS protein sequences from 15 eudicots and 9 monocots. The five previously defined TPS subfamilies (a ...

The centerpiece of the Swedish Museum of Natural History, in Stockholm, is probably the Fossils and Evolution hall, in which an enormous Tyrannosaurus rex skeleton seems to yawn over crowds of ...

Larger leaves favor photosynthetic production of a sugar-rich fluid to nourish the tree, but if the tree is too tall, the nutrient flow is slowed. Why are the leaves on the tallest trees all about the ...