fortunately i'm far enough north to see labrador tea grow wild around here...good to know they're related. i should mention though that it can be poisonous if not prepared properly...read up on the plant. and if you get it, try it as a tea first.
sean: marsh rosemary was used extensively in gruit ales before about a billion different factors lead to the sole use of hops. there are tons of threads on here about it but as usual google has even more info and history. it is very different than domestic rosemary especially if its related to labrador tea...very different smell and taste...but labrador tea does look an aweful lot like really big rosemary leaves.