African plants research in Naturalis museum

This 8 November 2016 video says about itself:

Senegal: Villagers replanting mangroves to protect environment and their livelihood

Senegal is in danger of losing its mangrove forests because of droughts and climate change.

But under the Paris agreement to reduce global emissions, it is counting on funding to replant the mangroves.

Al Jazeera’s Nicolas Haque reports from Casamance.

During my 16 December 2019 visit to Naturalis museum, I met botanist Jan Wieringa.

On a table, he had old newspapers, with plants exhibited on top of them. They were plants found during an expedition along the Gambia river; in the Gambia, and then the upper river in Senegal.

There were branches, leaves and fruits of Diospyros ellioti. A plant species of which Naturalis had hardly any material, certainly not from Senegal.

On one old paper, also from Senegal, another species.

Mr Wieringa was figuring out which plants would stay in Naturalis and which ones would go to other museums.