can't see yours clearly enough, but it's just "siding", maybe V joint [channel or drop sideing if the joint is a |_| shape, or maybe ship-lap, tongue and groove if it 'slots' together, etc] - if the flat surface is "marked up" it would be what's considered 'distressed' .... what counts is the actual species of wood, like pine, fir, cedar etc
if it's a tongue and groove make sure you coat every surface well before assembly or when you get it wet the swelling will mess things up big time
Bill
