About the Authors

Sittiporn Parnmen

Affiliation Botany Department, The Field Museum, Chicago, Illinois, United States of America

Robert Lücking

Affiliation Botany Department, The Field Museum, Chicago, Illinois, United States of America

H. Thorsten Lumbsch

tlumbsch@fieldmuseum.org

Affiliation Botany Department, The Field Museum, Chicago, Illinois, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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