Fig 7. Tree topology derived from RAxML analysis of a multilocus alignment (ITS + tef1α + rpb1 + rpb2) with 2470 characters under a GTR model with 1000 bootstrap replicates.

Statistical values shown are ML-bootstrap values above 75%, and the second value is the posterior probability (PP) where values above 95% are shown. Species native to Asia are in blue font, species native to Europe are in green font, and species native to North American are in black font. Red asterisks indicate G. curtisii f.sp. meredithiae. There are three major clades (A, B, and C), and subclades with names derived from the taxon that was described first.