I had a bad reaction to the red flower. A piece was in the hammock chair which I sat in for a long while. I later had burning in the shower, 4 little red marks and pain. I thought it was a bug bite and tried to squeeze the stinger. By the next morning it was oozing, red and had a red ring around it. Size of a quarter. Plus blisters started forming around it. After a week I was put on antibiotics but no help then prescription creams & cortisone. After a month its is going away. Very painful and hard to get rid of. Who knew? Thanks for this or I would still be wondering what happened.