Cannabis probable split from its closest relative, Humulus (hops), through the mid Oligocene, all over 27.8 million years ago according to molecular clock estimates. The centre of origin of Cannabis is likely inside the northeastern Tibetan Plateau. The pollen of Humulus and Cannabis are certainly equivalent and difficult to tell https://buyhenry45-7070358.aioblogs.com/80351572/a-review-of-herbhaus