This is a preview. Log in through your library . Abstract The Astereae were surveyed and the genera arranged in 23 informal groups. The generic groups were used to sample representative genera for a ...

The absence of large herbivores after the extinction of the dinosaurs changed the evolution of plants. The 25 million years of large herbivore absence slowed down the evolution of new plant species.

This is a preview. Log in through your library . Abstract Biological classification aims at establishing ordering systems for organisms. Principles of classification, however, differ in their criteria ...

Evolution has long been viewed as a rather random process, with the traits of species shaped by chance mutations and environmental events -- and therefore largely unpredictable. But an international ...

Gymnosperm means “naked seed” and comes from the same Greek root as gymnastics, which means to exercise naked. This group of plants is so named because the seeds are not enclosed inside an ovary, ...

A plant community is an assemblage of plants that co-exist in a similar environment. Different communities are defined by their structure, form, and species composition. Plant communities are both ...

A crack team of arthropod bodyguards may be defending that cherry tree in your backyard or the maple across the street. Mites protect plants by acting like herds of grazing sheep, munching the fungi ...

Plant behavior may seem rather boring compared with the frenetic excesses of animals. Yet the lives of our vegetable friends, who tirelessly feed the entire biosphere (including us), are full of ...