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Distribution of Protoparmelia and Maronina species.
Explanation note: Protoparmelia s. str. taxa mainly inhabit arctic/temperate regions and are represented by blue circles. Maronina species mainly inhabit subtropical/tropical regions and are represented by red circles. Continuous and dotted line red lines mark tropical and subtropical regions respectively.
Voucher information
Explanation note: Voucher information of the samples used in this study (adapted from
Genetic characteristics of nuclear loci used in this study
Explanation note: Genetic characteristics of nuclear loci used in this study, including the total number of sequences per locus, length of the alignment and best model of evolution selected using the Akaike information criterion inferred using jModelTest (from
Global environmental zones of the Protoparmelia and Maronina species
Explanation note: Global environmental zones of the Protoparmelia and Maronina species using the global environmental stratification (GEnS) system, based on statistical clustering of bioclimate data (
Results of the linear discrimination analysis
Explanation note: A) scree plot summarising the results of principal component analysis for deciding the number of principal components to retain out of 19 bioclimatic variables. The change in slope or the elbow of scree plot occurs at component 4 which is the 4th bioclimatic variable; B) Stacked histogram of the values of the discriminant function for the Protoparmelia and Maronina species inhabiting warm temperate regions.
Results of the linear discrimination analysis
Explanation note: Results of the linear discrimination analysis, including the extracted 19 bioclimatic variables, prior probabilities of the Maronina and Protoparmelia, coefficients of linear discriminants and allocation frequency.