So, you can read a tree diagram like a picture story of evolutionary history. The trunk of the tree is the ancestral line, made up of generation after generation of the same type of organisms.

Plant Ecology, Vol. 194, No. 1 (Jan., 2008), pp. 5-16 (12 pages) Disturbances and environmental heterogeneity are two factors thought to influence plant species diversity, but their effects are still ...

Diversity of tree association and forest structure were analysed in relation to microtopography and flooding intensity in a tropical freshwater swamp forest in the Sinnamary river basin, French Guiana ...