Figure 2. Relationship between average spur length and average visitor
size (only bumblebees) in populations of A. buergeriana var.buergeriana . A regression line was fitted to the data with
reference to the LMM results (P < 0.0001). The 12
ON-1000 population was not visited by bumblebees, so it was excluded
from the analysis. Error bars indicate standard errors.