Catfisham:

Mountain mints are related to regular mints, but are in a separate genus and are not, as far as I know, used for flavoring foods, at least not very widely used. The mint family includes many genera including the mints used for flavoring (mostly in genus Mentha), bee balms (genus Monarda), and Mountain Mints (genus Pycnanthemum). If you have grown any mint such as Spearmint (Mentha spicata) you would recognize Mountain mints as close relatives. Mountain Mints have herby or minty smell to the leaves and spread like garden mints, although not quite as rapidly as some. There are a number of species native to the eastern US (PA has about 8), most of which grow pretty easily in the garden or meadow. They aren't spectacular in flower like bee balms, but are easy, attractive, and native, so they are pretty popular with wildflower gardeners.

Mountain mints are not as agressive, attract butterflies, and often have attractive white or silvery pubescent foliage. Best of all, same minty flavor and makes good tea (should be avoided though if pregnant).