I live in NC, have tall fescue lawn, and all of a sudden this stuff started growing out of it!!!! It is a small 4x4 foot patch, and it grows about twice as fast as my normal grass. One thing I notice is that when I pull it up it either snaps at where the blade meets the ground or usually I can pull up the root which extends significantly horizontal along the ground. Any ideas??? Thanks! Pics to follow, I have a picture of the blade only, then of the blade and the root that usually comes up with it, and a pen for size reference. What is it and how do I get rid of it?