[1] Department of Palynology and Climate Dynamics, Albrecht-von-Haller Institute for Plant Sciences, University of Göttingen, 37073 Göttingen, Germany
[2] Department of Plant Systematics, University of Bayreuth, 95440 Bayreuth, Germany
[3] Institute of Soil Science and Geography, University of Bayreuth, 95445 Bayreuth, Germany