Planar Representation
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PLANAR GRAPH. Eucalyptus cladocalyx, Sugar gum.
Median of Campus Drive East, near Palm Drive.
Every tree has a representation as a planar graph. The tree can be embedded in a plane in such a way that its branches never cross each other. In phylogenetic trees, the descendants of a node are typically represented in the most convenient among many planar representations that describe the same topological branching structure for the tree.
Photo: Noah Rosenberg, February 27, 2018