Cannabis most likely split from its closest relative, Humulus (hops), over the mid Oligocene, all-around 27.8 million many years back In accordance with molecular clock estimates. The centre of origin of Cannabis is likely during the northeastern Tibetan Plateau. The pollen of Humulus and Cannabis are quite similar and challenging https://marcowbgkm.cosmicwiki.com/871996/5_essential_elements_for_seedbank