A friend and I recently discovered a very large plant growing in his garden that could possibly (but most likely not) salvia d, but just to be sure, if anyone is experienced in identifying, here are some pictures. If it's impossible to identify via these pictures, I can attempt to get more, but most likely not a higher quality. Also, if there's some random chemical test that could affirm it with household materials, that would be welcome. http://img341.imageshack.us/gal.php?g=59290204.jpg
im 99.9% sure you wont find salvia divinorum growing naturally in most of North America. additionally, (i know almost nothing about the leaf shapes) but even if that leaf was the right shape, its quite likely its a typical salvia (non-divinorum, ie: SAGE) plant