Fig. 2 Mean ± SE of height, root length, basal diameter, and stem, needle and root dry weights of western hemlock seedlings after 9 mo of receiving (C) no competition (control), (R + S) root-plus-shoot competition, (S) shoot competition, and (R) root competition from salal. Histograms in each experiment topped by different letters are significantly different at (Tukey's multiple-range test)