This phylogenetic tree of green plants is a branching diagram that visually traces the evolutionary lineage of a group of organisms back to a common ancestor. This method could trace all life on Earth back to a single ancestor. Phylogenetic trees derived from more specific datasets are increasingly used in ecological and biogeographic studies to help us understand biology and evolution. Phylogenetic trees were once hand-drafted by scientists, but they can now be created quickly and easily using open source tools developed by selfless computer programmers, as shown in this diagram of a phylogenetic tree of green plants. Download EdrawMax and create useful phylogenetic trees today.