Fig. 7
From: Microbial diversity in the floral nectar of Linaria vulgaris along an urbanization gradient
Map showing the locations of the 20 Linaria vulgaris populations studied in the vicinity of Leuven, Belgium. These populations have been color coded to represent the degree of impervious surfaces within 500Â m radius of each population. From these populations, five shoots were chosen at random, and a single inflorescence was taken from each plant. Nectar was collected from four flowers belonging to each inflorescence