I was visiting in the Hague a couple weeks ago and happened upon a few clumps of this flower. I was amazed! I had never seen a flower with a plaid pattern before. I took pictures and returned a few days later. When I was taking pictures a man came walking by and said they are very rare. He had walked a mile out of his way to find this clump because this is the only place he had found them. Could you tell me more about this flower? If you are interested, I could share my pictures.