Key points are not available for this paper at this time.
Alwyn H. Gentry, Neotropical Floristic Diversity: Phytogeographical Connections Between Central and South America, Pleistocene Climatic Fluctuations, or an Accident of the Andean Orogeny?, Annals of the Missouri Botanical Garden, Vol. 69, No. 3 (1982), pp. 557-593
Alwyn H. Gentry (Fri,) studied this question.