Plants are not animals and don't alway follow mammalian rules! There is a plant call Fatsia japananica ( I had a glass of wine tonight so my spelling may be a bit off) and lo and behold is can be crossed with ivy (Hedera species)- a totally different and unrelated plant! It produces a plant called fatshedera- a real hybrid! Now I don't know if our beloved cannabis can do this feat, but it is marginally possible that another species can pollinate cannabis. - Granny:hippy: