Fig. 2. Relationship between the ratio of effective to census population size (N_e/N_c) and increasing inflorescences sampled per plant averaged for four accessions each of Bromus inermis, Dactylis glomerata, Festuca arundinacea, Lolium perenne, Pseudoroegneria spicata, and Phalaris aquatica grown at Central Ferry and Pullman, WA, in 2001.