Bastrop County Texas: cover under canopy

Can anyone identify this plant that appears to grow wild under the tree canopy.

 

Pleioblastus distichus perhaps? If it is I wouldn't encourage it unless you don't mind it taking over your property.

http://www.bamboogarden.com/Pleioblastus distichus.htm

 

Yep I think that might be it. It is pretty widespread right now. It looks nice in the underbrush, and where it grows thick, has a similar appearance as maybe monkey grass from a distance. What native grasses might discourage further advancement but still look nice and grown in partial sun under canopy?

 

None of our natives will discourage the bamboo, it's highly invasive.

 

I don't think it's the bamboo, but clearly it does spread to dominate - which particular grass (among thousands of kinds) it is may be a secondary consideration in this instance.