text: what is the name of this seed? or plant that it comes from? the seed is about 1/4 inch long. flat. dark, brown or black. it kind of has an oval shape and on one end it has 2 tips that catch onto clothing or animal fur. the tips are like prongs. and when they are on your clothing they poke through and poke your skin and it hurts. maybe a kind of swamp beggar tick?  check out the last picture at this link (http://www.illinoiswildflowers.info/wetland/plants/tall_bgticks.htm).  hope that helps!