From Raleigh, NC. Started growing about 3 weeks ago and is in about a patch of 5x5ft. in my turf fescue grass. First two are pics of what grows out of the top after about a week or two. Roots, after I pulled these varmits....... Thanks for the help.
Ermmm, maybe I'm way off the mark, but those look a good deal like the flowering/seeding parts of Centipede grass, and that last photo shows that it is a running grass, which is also consistent.