Fig. 1

Phylogenetic reconstruction for Phytophthora and the downy mildews (Bayesian Analysis), with support values in Minimum Evolution, Maximum Likelihood, and Bayesian Analysis, in the respective order, on the branches, and Bremer support below the branches. Small Asterisks denote maximum support in a single analysis, big asterisks denote maximum support in all three phylogenetic analyses. Clade designations are those of Blair et al. (2008), with some additional differentiation corresponding to the statistical testing of the tree topology as given in Table 1. Predominantly caducous and papillate clades are highlighted in blue, the clade containing downy mildews is highlighted in green and the clades with predominantly non-caducous, non-papillate or semi-papillate members are highlighted in brown. For Phytophthora, the highlighted areas are divided into blocks representing groups that lead to paraphyly of Phytophthora and could potentially serve as a basis for the description of new genera.