your friends are either misinformed or pulling your leg. if there was landrace here, it's long gone now. I haven't found anything in weed history(I've been looking!) about weed being endemic to the americas, or having come before the spanish...that doesn't mean seeds didn't get here on their own(birds,lost chinese sailors,etc.).anyway, I'm really into tracing lineages back to source...so many stories of high adventure, lost to the ages..stories of whole cultures, migrating across the world...and then BOOM! along comes an explosion of strains...and somewhere back in the original landraces, are the parents of the next round of superweed!