  A series of ten plant species belonging to Magnoliopsida - Dicotyledons class
were analyzed in terms of chemical compounds distribution of abundance,
starting from the assumption that these distributions should give a picture of
similarities and differences between plants metabolism. From a pool of
theoretical distributions, log-normal distribution was selected giving the best
accuracy with the modeled phenomena and agreement with the observed data. From
obtained lognormal distributions statistics a classification were constructed
and were compared with the classification based on phylogeny.
