Fig. 6.

Classification of phytoliths using the linear discriminant analysis of their consensus shapes. Frequency of correctly classified phytoliths scoring on the linear discriminant function (LD): BraPinn, Brachypodium pinnatum; BraSyl, B. sylvaticum. Shapes scoring around zero were equally common in both species, which caused their overlap (black and blue shaded lines crossed) and resulted in 17 % of misclassifications. Phytolith shapes being the most informative, with respect to species identification, were those scoring between one and two (same in negative values) – they were the most common in a given species and had a relatively low proportion of misclassifications at the same time.