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The occurrence of the fatty secondary alcohol nonacosan-10-ol, responsible, e.g. for the superhydrophobicity of Lotus or Gingko, is restricted to land plants (Embryophyta), marked blue in the phylogenetic tree. Probably, this most successful chemical compound in plants evolved for hydrophobicity in the same biosynthetic pathway in the Silurian some 450 Ma. (Online version in colour.)
