My apologies if I step on your toes Dennis, I take note that the question was directed at you.
Burchell = plains zebra
Hartmann = mountain zebra, which at times is also referred to as the Quagga.
(True Quagga's being extinct)
Hartmann zebra: Black stripes with plain white stripes over the hind quarters and ribs.
Burchell: They have the brown / shadow stripe in the white, in between the dark black stripes.
Hartmann: Stripes over the ribs stop short, leaving a white stomach.
Burchell: Stripes axtend all the way to the bottom of the stomach.
Hartmann: The stripes going down the legs go all the way to hooves.
Burchell: Stripes down the legs stop short of the hooves.
Hartmann: Have more rounded or oval shaped ears.
Burchell: Ears are a little more pointy.
Hartmann: Hair growing above the nose, going up towards the eyes, is red in color.
Burchell: Hair growing above the nose is black.
Hartmann: Has a prominent dewlap
Burchell: No dewlap.
Then the spoor of the two species differ, Hartmann herds normally consist of smaller groups than Burchells and the Hartmann's stripes on the back is in a grid form.