> I'll try to dig up an >article I read on sub-arctic polyploids and high-altitude lobelias. This one? "The giant lobelias consist of a Chilean hexaploid group and a pantropical tetraploid group." from "Chloroplast Genome Rearrangements and the Evolution of Giant Lobelias from Herbaceous Ancestors " Eric B. Knox, * Stephen R. Downie,t and Jeffrey D. Palmer Mol. Biol. Evol. 10(2):414-430. 1993. Diane Whitehead