This is the third edition of the Genealogy of Fragrance chart, the other two being in September 1973 and March of 1972.
The very nature of reading ‘family trees’ is to assume that the newer generation is a direct descendant of the parent, bearing very strong family traits. This is not the case with fragrances. While one fragrance does inevitably lead to another, they are not necessarily very similar.
Major consideration is type, i.e. oriental, aldehydic, floral, etc. If a fragrance is strongly in one category, it may still bear some relationship to others, such as a floral with an oriental or aldehydic note. Even two fragrances placed squarely in one category may have no resemblance to each other such as a rose and gardenia—both being florals.