Fig. 6

Pie charts demonstrating the frequency of occurrence of each categorical trait in the dataset. Percentages are rounded to the nearest whole number, except those <1%. Due to rounding, percentages may not add to 100% within each pie. For mycorrhizal type, AM: arbuscular mycorrhizae, EcM: ectomycorrhizae, ErM: ericaceous mycorrhizae, OM: orchidaceous mycorrhizae. Traits listed as uncertain represent those species for which the trait expression is unknown.