Bayesian analysis of environmental 18SrDNA sequences generated in this study plus a representative selection of Phytomyxea sequences from GenBank (highlighted by boxes). 94 sequences, 1690 positions. Bayesian support values/RAxML bootstraps are shown if 0.70/50% or higher, or applied to a bipartition of particular interest. Nodes with a support higher than 0.95/95 are marked by black circles. Sequences are colour coded according to the origin of the sample, and the type of sample (soil sample, rhizosphere, isolate) are indicated by icons.