About the Authors

Norimasa Sugita


Affiliations College of Science, Rikkyo University, Toshima, Tokyo, Japan, Department of Botany, National Museum of Nature and Science, Tokyo, Tsukuba, Ibaraki, Japan

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceptualization: NS. Formal analysis: NS. Investigation: NS. Methodology: NS. Project administration: NS. Validation: NS. Writing – original draft: NS. Writing – review & editing: NS.