Table 3: Factor loadings for the first two principal components from the morphological data matrix for S. altissima and S. gigantea.

Trait Loading on PC1 Loading on PC2 Stem width 0.50 0.04 Ramet height 0.51 0.04 Leaf length 0.47 −0.22 Leaf width 0.14 −0.63 Teeth 0.34 −0.24 Water content −0.29 −0.39 Trichomes 0.34 0.58