Fig. 4.

Geographical distribution and genealogical relationship of the nuclear 18S rDNA haplotypes found in fungi associated with Arachnitis uniflora roots and particularly those belonging to the Arachnitis clade. Colour correspondence exists between panels. (A) Haplotype distribution. The pie charts reflect the frequency of occurrence of each haplotype in each site. Site codes are referenced in Table 1. (B) Haplotype network. Each short line on the bar between haplotypes represents one mutational step. Black dots represent median vectors and are represented as non-sampled or extinct ancestors. (C) Haplotype lineages found within the Arachnitis clade and their respective divergence times (over each node).