What species of weedy grass is this?
I have a BUNCH of this grass in my backyard. (see photos below) It is not crabgrass or silver crabgrass. I thought it may be barnyard grass, but the seed heads are totaly different than those of barnyard grass. I think it may be some sort of rye grass, but I don't know for sure. Does anyone else know what species of grass this is?
P.S. Photos from Photobucket look a lot better in posts than those from Flickr.
Here are the roots and underside of the plant:
And here is one of the seed heads: