Fig. 2. The phylogeny of residual maximum likelihood (REML) Cs values in flowering plants down to the ordinal level using the phylogeny of Soltis et al. (1999). Thickness of lines denotes average ANOVA values. The ANOVA values and number of replicates per Order are shown in brackets. Orders with unusually high and low uptake of Cs are shaded. Dashed lines = unsampled.