Back to petunias: Correct me if I'm wrong, but 99.9% of all modern day petunia varieties are:
Petunia x hybrida (denotes the hybrid origin of the many cultivars)
so, All the modern varieties and different series should all be entered as botanical "Petunia x hybrida"
I see the species varieties are in the database, which are not Petunia x hybrida
Long story short, most of the varieties that you will be entering and/or searching will be Petunia x hybrida
Evan? Zuzu? Dave?
Note: If you are entering in a variety that is normally propagated by vegetative stem cuttings, then you should choose Seed Propagation: Will not come true from seed
These petunias will probably produce viable seeds, but chances are that it will be different that the parent plant