Landrace strains are the origins of all cannabis strains now in modern times. There are thought to only be a dozen true landrace strains in existance. Now in modern times thanks to growers the world over we now have 4 species. Cannabis Sativa,Cannabis Indica,Cannabis Ruderalis and Landrace Cannabis. Landrace strains are the fathers and mothers of all cannabis. If your religous say that adam and eve were landrace strains and all of us desended from 2 people. LOL that sounded cheesy. Cannabis was thought to be originated from the tibetan mountains and crossed the world without mans help by being carried in bird droppings and by sticking to animals fur over great distances. In countries where cannabis is not culled you can find it growing wild on hillsides and fields.