Aspidotis californica
A species I have only seen once. Found in much of California at low elevations at moistish rocky sites.
A leaf, on the trail to Feather Falls, Butte County, California, 27 May 2009.
Plant habit on the trial to Feather Falls, 27 May 2009.
Abaxial leaf surface, showing sori, on the trail to Feather Falls, 27 May 2009.