“Edaphic Aridity As a Factor in Angiosperm Evolution “
Great paper by the well-known botanist of the late 20yh Century Daniel Axelrod regarding how dry rocky microsites can serve as sites of plant speciation, containing a cast of species that completely differs from the surrounding more mesic, wetterforests.
https://drive.google.com/file/d/1I8koFJEqeue2azVnoSx54EHbq2fAxYNS/view?usp=drivesdk