I've compared the backs of the flowers, the petals on yours Porkpal aren't broad all the way to the centre, they narrow significantly.
http://garden.org/pics/2015-11...
Compare with this photo ..
http://swbiodiversity.org/sein...
Viguiera dentata is widespread and variable. It is unique in Helianthinae in the hairy staminal filaments.
Are there hairs on the filaments? An example of hairs on filaments in the link below, the yellow parts on top are the pollen bearing anthers.
http://wnmu.edu/academic/nspag...
