Are There Any New Discoveries in Plant Derived Medicines?

There's still a lot of research going on in these plants. India is the hotbed for looking at plant derived medicines. So we've exhausted what we know but we don't knows what we don't know that's still out there and I think that's the exciting part. There are two books you would recommend even if it wasn't necessarily because you're going to use them, they both have fair and accurate representations.