1. Department of Systematic Botany, Albrecht‐von‐Haller‐Institute of Plant Sciences, Georg‐August‐University, Untere Karspüle 2, 37073 Göttingen, Germany
2. Courant Research Centre Geobiology, Georg‐August‐University, Goldschmidtstraße 3, 37077 Göttingen, Germany
3. Department of Biology, East China Normal University, 3663 Zhong Shan North Road, Shanghai 200062, China
4. Department of Biology, Duke University, Durham, North Carolina 27708 USA
5. Arbeitsgruppe Spezielle Botanik, Justus‐Liebig‐Universität, Heinrich‐Buff‐Ring 38, 35392 Giessen, Germany