re: Name of the shrubs often found under oak trees?

Correct roundup will not kill it, roundup is intended to kill grassy weeds. If you want to kill it or keep it from growing in certain areas, I spray a mixture of roundup and 24d. Probably straight 24d will do it but I always have it mixed because it pretty much knocks out all weeds. It will knock it out. May take a few applications but it works. 24d is intended to kill broadleaf weeds.