>You mentioned climate consistency.
>Maybe with the climate changes in Australia, the seasons were more
>inconsistent (unreliable, unstable, or whatever) than in the Drosera
>habitats of South America over the past few million years. Thus the dry
>stress would have been greater on the ancestral Drosera in Australia than
>on the ancestral Drosera in South America, even on those growing in drier
>soils of the transitional habitats around an ideal seepage habitat on a
>mountain range in what is now Brazil, for example. Though it was not
>ideal in these transition zones and the dry stress was present, at least
>we can speculate that it must've been more stable than in the Drosera
>habitats of Australia as the climate became drier and the seasons more
>inconsistent. How about it Jan?
If you also take into consideration what I have written about past ("few" =
50 E 6 a, so we do not need to collide with Magnus, whose statement about
the relative stability of AU climate during the last 10 E 6 a is certainly
correct) and present distribution of mediterranean, desert, and tropical
humid zones in the mentioned continents, your theory becomes very
convergent with mine.
Kind regards
Jan