There is nothing wrong with calling it "Kingsville boxwood." Everybody does; it
is a colloquial name. But your label, and the label at a show, should also read
Buxus microphylla 'Compacta.'
Same as "Blue Moss Cypress"
Chamaecyparis pisifera 'Boulevard.'
There are a lot of such things, people, too.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)