Fig. 4From: Evolution of flower allometry and pigmentation in Mammillaria haageana (Cactaceae)Tepal shape and size variation according to the PCS axes. a,c,e,g depicts the PCS groups according to the previously proposed subspecies. b,d,f,h depicts the PCS groups according to their corresponding accession. Boxplots show the Q1, Q2, and Q3 quantiles, and outliers. Statistically homogeneous groups from a Dunn test (p < 0.05) are also depicted with lettersBack to article page