The bevel on the long side of the plank, at an angle of 45°, is called a V-seam. Due to the V-seam that occurs when you put the planks against each other, the planks are nicely accentuated. This creates the effect of all lines around each plank. The organic shapes and color differences in the planks give the room a natural character with the appearance of an authentic and sturdy wooden floor. A herringbone floor with a bevelled edge has a lot more detail and demands more attention in a room. The bevelled edges are often used in herringbone floors to mask differences in height.
Creating floors without seams, allows the natural height differences to be present in the floor, so you don’t  get a floor that is too smooth, almost unnatural. The herringbone floorboards are usually supplied without a bevel, so that the herringbone floor is smooth over the entire surface and so that the entire floor looks sleek and modern.