I have drafted an eco-evolutionary approach to biogeography (Fig. 1, Gray et al 2015) which I am applying to the distribution of aquatic plants in Britain. For this I have produced a phylogenetic tree down to species level for 164 species of aquatic vascular plants and a new set of species traits to completely revise my first synthesis (Willby et al 2000). My ambition is to link biogeography to ecosystem functioning. This work is in preparation with Richard Gornall (University of Leicester, England) and Alessandro Gimona (The James Hutton Institute, Scotland).