What is poa?

Poa Annua / Annual Bluegrass. It's the only grass "weed" I could find that can have wrinkly blades like the specimen in my picture. Thanks.

You have Poa, you have sedge and I think you have bermuda also. So do I in ft bend co. I hand remove or use chemicals (depending on severity) in garden beds but don't actively fight it in the lawn as too expensive. Weekly mowing seems to keep it in ck. You typically get sedge in excessively moist areas so I fine tune sprinkler heads accordingly and it helps.