Fig. 1.

One of 151 equally most-parsimonious trees generated from the ITS sequences. Support for each node is represented by bootstrap percentages (BP) below the branch (shown only when >50 % and consistent with the strict consensus tree). An arrow indicates clades that did not appear in the strict consensus tree. Numbers above each branch indicate the numbers of character changes along each lineage (accelerated transformation, ACCTRAN, optimization). Groups that possess characteristic indels are indicated using letters (refer to Table 2).