>It seems North and South America, Australia, Southeast
>Asia and India are the only areas where pitcher plants
>occur naturally.
It seems you think "pitcher plants" are a natural grouping. This is
definitely not the case. Like "carnivorous plants", this is a group sharing
some common features but not because of close natural affinity. Again, cps
or pitcher plants are *not* all closely related to each other.
Kind regards
Jan