The valid botanical name is on the back of each of those tags. If only every plant seller did this!
The genus for the petunia on the top is Petunia and the species really should be left blank.
The cultivar is the word in single quotes. In the case of this particular plant, the cultivar is 'Petrosena'.
The name used to market the plant is the trade name, in which case, "Sanguna® Lipstick".
