Ashton, try these links. I found they have a wealth of information on the different varieties.
For this first one scroll down until you get to the tables that list & describe them. http://edis.ifas.ufl.edu/mg266
I am a strong believer in the simple fact is that what matters in this life is how we treat others. I think that's what living is all about. Not what I've done in my life but how I've treated others. ~~ Sharon Brown