Read a little on that forum. The fake calea smells like a pepper smell when you brush the leaves...it is so bitter bitter enough to make you puke if you drink it and have a weak stomache. The fake calea also looks fairly different . . hmmm. It's not very bitter and the pepper smell are the two biggest signs... Leaf shape and venation looks slightly different too. along with the flower.. Check out the forum its full of info on this subject.