This one is very technical "Tube-type waxes containing substantial amounts of nonacosane-10-ol are dominant in the Gymnosperm genera (e.g Ginkgo, Taxus, Picea, Pinus or Abies) and have also been found in the Angiosperm genera (e.g. Chelidonium majus, Papaver somniferum, Prunus domestica or Rosa spp.)" link On a side note, for me it is also interesting that the co-author of this research, Simona Dragota, is one conational of mine