Fig. 3.

Phylogenetic tree for the ITS region of Tulasnella isolates from the Shallow Sands Woodland, Damp Sands Heathland and Coastal Heathland sites. The sequences clustered into two well-supported (bootstrap = 100 %) OTUs (‘Tulasnella asymmetrica’ and OTU1), based on a 5 % sequence divergence cut-off (Linde et al., 2014, 2017). Warcup’s (1981) isolates of T. asymmetrica were separated into T. asymmetrica and ‘T. asymmetrica’ based on phylogenetic divergence (Cruz et al., 2014). We have kept this separation and refer to ‘T. asymmetrica’ in the text. GenBank numbers are listed in Supplementary Data Table S3.