Malus pumila followed by the variety name.
Malus sp.
The Scientific name for a white apple tree would be an orchid's crab apple tree. I know that it says crab apple tree but it's not a crab apple, the white apple actually has seeds the shape of crab eyes so, the apple was name after a crustacean.
The scientific name for the apple tree is "Malus domestica".
The scientific name for the apple tree is "Malus domestica".
Malus pumila.
Malus domestica
The scientific name of the rose apple tree is Syzygium jambos. It is a tropical tree that produces edible fruits resembling rose petals, hence its common name.
Malus Domestica
Malus pumila
Golden Delicious
The scientific name for the crab apple tree is Malus sylvestris.
Here is a site I found, all about dwarf apple trees. See the link below