Taking into account the relative paucity of knowledge about rDNA organisation in most gymnosperms despite the rather reduced size of the group (1000 gymnosperm versus 250 000 angiosperm species), we ...

After decades of molecular phylogenetic studies, the deep phylogeny of gymnosperms has not been resolved, and the phylogenetic placement of Gnetales remains one of the most controversial issues in ...

Insect pollination is a decisive process for the survival and evolution of angiosperm (flowering) plants and, to a lesser extent, gymnosperms (without visible flower or fruit). There is a growing ...

The origin of flowering plants, or angiosperms, stands as one of evolutionary biology's great enigmas. Scientists know that they diverged from the seed-bearing plants, or gymnosperms, at least 150 ...

For many years, Charles Darwin was haunted by flowers. In 1859, the naturalist published his most famous work, On the Origin of Species, the book that is generally regarded as the foundation of ...

Named for Charles Darwin, the only known specimen of a newly discovered beetle, Darwinylus marcosi, died in a sticky gob of tree sap some 105 million years ago in what is now northern Spain. As it ...

The discovery of a beetle and pollen in 105-million-year-old Spanish amber is proof of a new insect pollination mode that dates to the mid-Mesozoic, before the rise of flowering plants. The study ...

Named for Charles Darwin, the only known specimen of a newly discovered beetle, Darwinylus marcosi, died in a sticky gob of tree sap some 105 million years ago in what is now northern Spain. As it ...