Cannabis likely split from its closest relative, Humulus (hops), over the mid Oligocene, all-around 27.8 million decades ago according to molecular clock estimates. The centre of origin of Cannabis is likely from the northeastern Tibetan Plateau. The pollen of Humulus and Cannabis are extremely related and tricky to distinguish. Humulene https://rafaelvulcr.techionblog.com/32734623/helping-the-others-realize-the-advantages-of-sativa