Millions of years ago, hops branched off from the evolutionary tree of cannabis, finding the wet soil alongside creeks preferable to the dry savannahs, while cannabis stayed put in the savannahs, resulting in speciation. For decades, beer and cannabis were wedged into the Urticales order, but further investigation revealed they belonged in the Rosales order, with a new family name of Cannabaceae being given to them in the 2000s.