The Aureobasidium pullulans varieties. A. Phylogram showing the phylogenetic relationships of the four A. pullulans varieties and their phylogenetic position, inferred from super alignment of selected fungal proteomes. Chi2-based branch supports are shown, calculated according to the approximate Likelihood-Ratio Test, as implemented in Phyml 3.0. B. Representative images of one-month-old cultures of the four A. pullulans varieties (as indicated) on malt extract agar and microscopy images of cultures after one week of growth on malt extract agar blocks.