August Johann Rösel von Rosenhof the fathers of German entomology. The fourth part is practically a monograph of the spider Araneus diadematus. The description of the animal is illustrated by six plates which show the differences in variation of the colouring of the species. They show also internal dissections. Rosenhof was interested in the production of silk but he confused the anus with the opening of silk-producing glands. He published, between 1753 and 1758, "Historia naturalis Ranarum nostratium" devoted to frogs. The quality of the work, in particular of its illustrations, make it one of the most beautiful devoted to these animals. He presented the
Ljubljana Botanical Garden is a member of the international network Botanic Gardens Conservation International and cooperates with more than 270 botanical gardens all across the world. Of over 4,500 plant species and subspecies that grow on , roughly a third is endemic to Slovenia, whereas the rest originate from other European places and other continents. Ljubljana Botanical Garden The Ljubljana Botanical Garden (), officially the University of Ljubljana Botanical Garden (), is the central Slovenian botanical garden, the oldest botanical garden in Southeastern Europe, and one of the oldest cultural, scientific, and educational organisations in Slovenia. Its headquarters are located in the Rudnik