 Polyploidy from the diploid (14 chromosomes) to the tetradecaploid (98 chromosomes) is exhibited.Some treatments have recognized dozens of species each for what other, comparably qualified botanists have considered single, more variable species.On the other hand, species in the other "Rubus" subgenera (such as the raspberries) are generally distinct, or else involved in more routine one-or-a-few taxonomic debates, such as whether the European and American red raspberries are better treated as one species or two.