Blossom is an interactive program for making statistical comparisons with distance-function based permutation tests developed by P. W. Mielke, Jr. and colleagues at Colorado State University (Mielke and Berry 2001) and for testing parameters estimated in linear models with permutation procedures developed by B. S. Cade and colleagues at the Fort Collins Science Center, U. S. Geological Survey (known as the Midcontinent Ecological Science Center prior to 2002). This manual is intended to update and replace earlier versions by B. S. Cade and J. D. Richards dated 2000 and 1999 and by W. B....