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Phylogenetic tree of representatives of the Planctomycetes-Verrucomicrobia-Chlamydiae superphylum found on 63- to 125-μm (SED63), 250- to 500-μm (SED250), and 1,000- to 2,000-μm (SED1000) particles in stream sediments. GenBank accession numbers are indicated in parentheses, as are the numbers of clones containing the ribotypes when the number was more than 1. Related sequences are shown for reference. Scale bar = 0.10 change per base pair.
