Cannabis very likely break up from its closest relative, Humulus (hops), during the mid Oligocene, around 27.8 million years ago according to molecular clock estimates. The centre of origin of Cannabis is likely during the northeastern Tibetan Plateau. The pollen of Humulus and Cannabis are extremely similar and complicated to https://rafaellkewl.newbigblog.com/32503339/the-ultimate-guide-to-herbhaus