Chloroplast DNA restriction site polymorphism in Genisteae (Leguminosae) suggests a common origin for European and American lupines

Restriction site polymorphism in cpDNA of 35 legumes was studied in order to address natural relationships and geographic distribution within the tribe Genisteae. 386 sites were studied, 277 were polymorphic, 207 were informative. Phylogenetic inferences with distance and parsimony methods suggest that the American and Mediterranean Lupinus species belong to a monophyletic group which arose from a single center of diversification. The data furthermore indicate that Lupinus should not be included in the tribe Genisteae since at the level of cpDNA polymorphism Anagyris foetida (tribe Thermopsideae) appears more closely related to other Genisteae than Lupinus does. © 1994 Springer-Verlag.