Appendix B. Results from analyses investigating whether herbivory differs across source populations and sites differing in the presence of naturally occurring C. sparsiflora. Both serpentine and non-serpentine ecotypes were included in these analyses.

FIG. B1. A greater proportion of plants in plots where Collinsia sparsiflora is naturally absent received herbivore damage compared to experimental plants where C. sparsiflora is naturally present (F1,98 = 4.19, P < 0.04). The percentage of leaf area removed also tended to be higher outside the natural distribution (LSMean ± SE proportion of leaf material damaged: C. sparsiflora naturally absent 0.44 ± 0.04; C. sparsiflora naturally present 0.32 ± 0.06), though this difference was not significant (F1,93 = 2.91, P < 0.09). No significant source population x Collinsia presence interactions were detected, indicating that both serpentine and non-serpentine ecotypes receive similar amounts of herbivory.