@misc{DunkelDrenckhahnZonneveld2022,
  author    = {Dunkel, Franz G. and Drenckhahn, Detlev and Zonneveld, Ben},
  title     = {Forum Geobotanicum 10 (2021/2022)},
  volume    = {10(2021/2022)},
  editor    = {Meierott, Lenz and Drenckhahn, Detlev and Dunkel, Franz G. and Ewald, J{\"o}rg and Fleischmann, Andreas},
  issn      = {1867-9315},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-298926},
  year      = {2022},
  abstract  = {Forum Geobotanicum is an electronic journal devoted to disseminate information concerning geographical distribution, ecology, morphology, taxonomy and conservation of vascular plants in the European Union with a main focus on middle Europe. It covers from molecular biology to environmental aspects. The focus is to publish original papers, reviews and announcements for the educated generalist as well as the specialist in this broad field. Forum Geobotanicum does not aim to supplant existing paper journals, but will be much more flexible in format, publication time and world-wide distribution than paper journals. Many important studies are being currently published in local journals and booklets and some of them are published privately. Hence, these studies will become aware to only a limited readership. Forum Geobotanicum will encourage authors of such papers to submit them as special issues of the journal. Moreover, the journal is planning to build up an E-mail-address section to support communication between geobotanists in Europe. The editors are optimistic that this electronic journal will develop to a widely used communication forum that will help to stimulate activities in the entire field of geobotany in middle Europe. To overcome problems of long term archivation and effective taxonomic publication of articles published electronically in Forum Geobotanicum, print versions of each volume of the journal and appropriate digital storage devices will be delivered freely to selected university libraries and state libraries in middle Europe.},
  subject      = {Geobotanik},
  language  = {de}
}
@article{DrenckhahnZonneveld2022,
  author    = {Drenckhahn, Detlev and Zonneveld, Ben},
  title     = {Rubus admirabilis Drenckhahn, eine neue Brombeerart aus dem Formenkreis der Serie Vestiti an der Westk{\"u}ste von Schleswig-Holstein, Deutschland},
  series = {Forum Geobotanicum},
  volume    = {10},
  journal   = {Forum Geobotanicum},
  issn      = {1867-9315},
  doi       = {10.3264/FG.2022.1228},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-298658},
  pages     = {38-44},
  year      = {2022},
  abstract  = {Rubus admirabilis Drenckhahn is a tetraploid new species of the Rubus section Rubus, series Vestiti. Stem leaves are 5-foliolate, digitate to weakly pedate with elongated, obovate acuminate terminal leaflets, adpressed hairy upper side and light green shimmering, softly hairy under side. Stems are arching (up to 2 m) partly climbing, obtuse-angled, densely hairy and glandular, gray green to dull brown, armed with 10(3-21) /5cm straight slender prickles, mostly 30-45º declining, 4.6(3-7)mm long. Pedicles of inflorescence are densely hairy (patent and partly adpressed), armed with 2-4 (per cm) slender patent to slightly curved prickles (1-2 mm long) and studded with numerous stalked glands (0.3-0.5 mm long) and some bristles. The species tolerates shadow and prefers moist soil. The type locality is probably the species' site of introduction or genesis. It is located west of the town Garding on the North Frisian peninsula of Eiderstedt (several hundred shrubs), where several non-native Rubus species were probably introduced in the course of reforestation in 1970. Rubus admirabilis spreads south to the town of Heide in Dithmarschen and north to the island of Amrum (maximal range diameter of 70 km) and seems to be in an expansive phase.},
  subject      = {Brombeere},
  language  = {de}
}