Emanuel Sweert 1552-1612 Florilegium Amplissimum et Selectissimum Florilegium. tractans de varius florib. et aliis Indicis plantis ad vivum delineatum in duabus artib. et quatuor linguis concinnatum. Published in 1617. In the early 17th Century, Emanuel Sweert was Praefectus of the gardens of Rudolf II , Emperor of Hapsburg. Rudolf encouraged him to depict the rare and unusual flowers in his collection and to have them etched in copper. Many of his plates produced during the Tulipmania Period contained the bulbs of the various flowers as well as illustrations of the flower itself. Sweert was a Dutch artist as well as a floriculturist. His combination of professions made him well known among naturalists and botanists of the time. The first few editions were actually published as a catalogue representing what was to bloom inside the small bulbs offered for sale at mid-Winter Flower Fairs at Frankfurt. Later editions were published as a true florilegia for both scientists and experts in the culture of such fine specimens.