Cheilanthes horridula
In the US, this species occurs in central Texas southwest the Mexican border. I've seen it near Austin, Texas, and in the Big Bend area.
Plant habit in Closed Canyon in Big Bend Ranch State Park, 12/30/04.
Adaxial view of a pinna at Closed Canyon, 12/30/04.
Abaxial view of a pinna at Closed Canyon, 12/30/04.
A small plant with new leaves emergin at the Hamilton Pool Preserve near Austin, Texas, 3/19/04.