1 | Musée national d’histoire naturelle, Luxembourg, Luxembourg |
2 | Botanischer Garten und Botanisches Museum, Freie Universität
Berlin, Berlin, Germany |
3 | Meise Botanic Garden, Meise, Belgium |
4 | Department of Biology, Duke University, Durham NC, USA |
5 | W. Szafer Institute of Botany, Polish Academy of Sciences,
Kraków, Poland |