What plant is that?

This month we have a low growing herb found in pastures and open disturbed sites. It is native to south-central U.S.A. and may be considered a weed in the northeast. It is most likely to be noticed when it puts up its dense spike inflorescence with distinctive long-awned bracts. The flowers are indistinct or irregular with 4 stamens and 4-parted petals and calyx. The basally arranged leaves are gray-green, long and narrow. The leaf margins are mostly entire and wooly on back.