Figure 1. Non-metric multi-dimensional scaling ordination of AMF assemblages associated with ecotype populations (S1, S2, NS1, and NS3) of Collinsia sparsiflora grown in a common garden of serpentine and non-serpentine AMF (each point represents AMF assemblage from a pooled sample of two seedling replicates), serpentine soil control or non-serpentine soil control AMF (each data point represents AMF assemblage from a pooled sample of four seedling replicates).

The non-metric multi-dimensional scaling ordination is a configuration of the samples in which relative positions are assigned based on the Bray–Curtis similarity matrix of the data so that samples closer together have a higher similarity of component taxa than samples farther apart and overlapping samples are highly similar. The nonmetric scale of the ordination does not assign values to the axes. Note: S1 plants growing in non-serpentine-only control grew poorly and resulted in insufficient root tissue mass for downstream molecular identification of AMF associates.