Jason Stajich wrote a few Perl and BioPerl scripts to analyze the distribution of fungal species with ribosomal DNA internal transcribed spacer ( ITS) sequences in NCBI GenBank. The whole spreadsheet of the data is public and available here and Jason’s comments are available on his blog post. According to this analysis, soil Fusarium is the most abundant deposited genus. As stressed by Jason, the analyzed sequences are mainly from Sanger-based studies. The recent released of 454 seq’ing based fungal surveys will certainly change this current picture.