1. Department of Biological and Environmental Sciences , University of Gothenburg, P. O. Box 461, SE.405 30 Gothenburg , Sweden
2. Gothenburg Global Biodiversity Centre , Box 461, 405 30 Gothenburg , Sweden
3. Department of Computer Science and Digital Futures, KTH Royal Institute of Technology , SE.100 44 Stockholm , Sweden
4. Department of Bioinformatics and Genetics, Swedish Museum of Natural History , P. O. Box 50007, SE.104 05 Stockholm , Sweden
5. Royal Botanic Gardens, Kew, Richmond , Surrey TW9 3AE , UK
6. Department of Plant Sciences, University of Oxford, South Parks Road , Oxford OX1 3 RB , UK