Compare to Phlomis fruticosa. It's common name is Jerusalem Sage, though it's not actually sage.

Yes, Jerusalem Sage (Phlomis fruticosa), native to the Mediterranean, thanks!!!

Might also be a P. fruticosa x P. russeliana hybrid like 'Edward Bowles' as these are also available in the Texas nursery trade - or even straight P. russeliana, though it's less commonly offered. Someone hopefully can tell the differences, but I can't distinguish and suspect that many of the on-line photos available for comparisons are mistagged or are of other intergrades.