The types of the taxa of the genus Rubus (Rosaceae L.) described by Philipp Jakob Müller

Since Linnaeus (1753) described two bramble species in his Species Plantarum, thousands of names of Rubus in Europe have been published. The only overview of these was the monograph of Sudre (1908-13) who arranged these taxa in an artificial system, which is actually no more than an annotated database. From the 1970s onwards, authors have tried to bring order in this confusion by taking into account geographical distribution, variability, and taxonomic structure. A major requirement for obtaining clarity is typification. This article is a contribution in this regard. The almost 300 names published by Philipp Jakob Müller (Müller 1858, 1859a, 1859b, 1861) are listed and their types confirmed or selected. The status of these types is indicated. A separate list of the Mullerian taxa in Wirtgen’s Herbarium Ruborum Rhenanorum is added. Synonyms were mentioned, where available.