Statistical parsimony network and associated nested design. Statistical parsimony network and associated nested design. Haplotypes are designated by names as defined in table 2. Zeros indicate haplotype states that are necessary intermediates but were not present in the sample. Each line represents a single mutational step connecting two haplotypes. Haplotypes belonging to the same clade level are boxed up to clade level 4-x. Clade level designations are given within each box that contains observed haplotypes. a) Nested cladogram for 16S rDNA and b) for ITS-1 variation.