XVI International Botanical Congess

North America was divided into west and east landmasses during the mid-Cretaceous. The eastern area had close floristic ties to Europe. Both leaf and reproductive remains are common to the Dakota Formation exposed in MN, IO, NB, and KS and the Peruc-Korycany Formation in the Bohemian Cretaceous Basin. Prisca and Mauldinia are from USA while similar fossils in CZ. Rep. are assigned to Diplostrobus. From both areas there is a Platanoid complex with some common elements which include Protaeophyllum araliopsis, Araliophyllum formosum, and Sassafras sp. as common elements. Various species of Sapindopsis may represent compound leaf types of platanoids. Floristic comparisons will be presented between North America and Central Europe.