How many different kinds of hallucinogens are there?

I don't think anyone really knows.
Here are some more common known hallucinogens.


Dextromethorphan
Magic Mushrooms (shrooms)
Mescaline
Salvia divinorum




* PCP
* LSD
* DMT
* Psilocybin
* Peyote
* MDA or MDMA