Figure 1.

(a,b) Relationships between population size and measures of pollination success, (c) PTE, (d) proportion of self-pollination ($R_{\text{adj}}^2=0.38$; subregion NS; log population size, p=0.004) and (e,f) fruit and seed production in S. longicauda. Symbols indicate population clusters belonging to a particular subregion of the study area (treated as a block factor in the ANCOVA; table 1).