About the Authors

Martin Cheek

Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Visualization, Writing – original draft

m.cheek@kew.org

Affiliation Science, Royal Botanic Gardens, Kew, Richmond, Surrey, United Kingdom

Aiah Lebbie

Roles Conceptualization, Investigation, Resources, Validation, Writing – review & editing

Affiliation National Herbarium of Sierra Leone, Department of Biological Sciences, Njala University, Sierra Leone

Competing Interests

The fieldwork which produced the specimen which triggered this study was funded by Joule Engineering as part of an extension of baseline studies for a hydroelectric dam at Bumbuna-Yiben, Sierra Leone. Joule had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript. This does not alter our adherence to PLOS ONE policies on sharing data and materials.