The Scribbly Gum is undeniably evocative and mysterious. In Murray Bail's book Eucalyptus he relates the scribbly gum to the writing of the father, who writes "Nothing is One" in a number of places in his notebook. The phrase nothing is one is clever. In it Bail capture the essence of the Eucalypt genus, that is, it is a single family of trees and yet they are so diverse in all ways. This is in fact a reflection of a principle in nature, that of see-similarity. This is the idea that things repeat with change. Eucalypts repeat with a hell-of-a-lot of change though.