Guy there really is not, in fact the states don't even have any clear standards in this regard (as far as I'm aware) Here is a link to a paper delivered by Judy Fakes back in 2005, very little has altered since then.
http://www.aila.org.au/treemanagementforum/fakes.htm
Curently we have to rely on the ANSI standards ourselves as current international best practice.