There are a bunch of these spots in my Bermuda (now dormant), and I want to get rid of them. It looks like a kind grass, so my weed killer safe for grass doesn't work.

I thought is was Annual Bluegrass, or poa annua, but it doesn't have the little white feathers at the top of the blades.. Doesn't anyone know what this is, and how to get rid of it? I may just dig em up.