The mark consists of seven parallelograms, each having a pointed end, a central parallelogram from the seven parallelograms having a long axis propagating from each of its two pointed ends, one of the pointed ends of each of the seven parallelograms meeting at a central point, the central parallelogram having its long axis forming a line of reflection symmetry where a second parallelogram is a mirror image of a third parallelogram and a fourth parallelogram is a mirror image of a fifth parallelogram and sixth parallelogram is a mirror image of a seventh parallelogram, the second and third parallelograms partially overlapping the central parallelogram and having a smaller contained area than the contained area of the central parallelogram, the fourth and fifth parallelograms partially overlapping the third and fourth parallelograms, respectively and having a smaller contained area than the second and third parallelograms and the fifth and sixth parallelograms having a smaller contained area than the third and fourth parallelograms, the seven parallelograms forming a stylized leaf.