Acknowledgements:
Over the years many colleagues have contributed to this cytology website. The authors thank the following persons in particular for their input in setting-up and optimising the database:
Silvia Pérez-Espona, University of Edinburgh / Royal Botanic Garden Edinburgh.
Mary Adeyanju, University of Edinburgh / Royal Botanic Garden Edinburgh.
Larry Skog, Department of Botany, Smithsonian Institution.
Michael Kiehn, Botanical Garden, University of Vienna.