About the Authors

Sandra Knapp

s.knapp@nhm.ac.uk

Affiliation Department of Botany, The Natural History Museum, London, United Kingdom

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SK. Performed the experiments: SK. Analyzed the data: SK. Contributed reagents/materials/analysis tools: SK. Wrote the paper: SK.