As exploration from Europe was extending to many new lands in Asia, Africa, and the New World, many new plant collections were returning for study and classification. The more complex natural systems were having difficulty dealing with this overwhelming new diversity, and a new method was urgently needed. The Swedish botanist, Linnaeus, developed a convenient sexual system of plant classification, which, combined with binomial nomenclature, was sufficient to deal with the new diversity. Linnaeus had a real talent for ordering, and his many books organized all aspects of botany at the time, including literature, naming, morphology, terminology, and classifications of all plant groups. His impact was substantial, no doubt, the most significant of any single person in the history of botanical classification.