This is a phylogenetic tree expressing the location of C. botulinum in the Bacteria Kingdom. The Kingdom Bacteria is very diverse due to hundreds of differences between groups. C. botulinum, for example, is positioned where it is on the tree because of the characteristics stated on the Classification page.
Now that we know where the bacteria is located Phylogenetically, let's look at where it is located in the environment on the Habitat page.
Use of phylogenetic tree courtesy of Oladele Ogunseitan, and can be seen on his website -- http://www.blackwellpublishing.com/ogunseitan/phyltree.asp#