Tree representations figure throughout Llull's work, culminating in Arbor scientiae, a collection of tree-based diagrams of science and human knowledge, published in 1296.

There are 200 examples of tree diagrams in The Book of Trees, the small forest of diversity a good argument for their proliferation in visualizing data.

How do scientists diagram evolutionary relationships? Scientists represent evolutionary relationships with tree diagrams (also called cladograms) because new life forms appear the way new branches ...