Appendix G. Regression of mean number of Rhinocyllus conicus egg cases per wavyleaf thistle flower head as a function of the number of bolting native thistles within a 5-m radius of the sampled wavyleaf plant. RussellF. Leland LoudaSvata M. A. RandTatyana D. KachmanStephen 2016 Regression of mean number of Rhinocyllus conicus egg cases per wavyleaf thistle flower head as a function of the number of bolting native thistles within a 5-m radius of the sampled wavyleaf plant.