Myriopteris gracillima

Myriopteris gracillima, commonly known as lace lip fern, is a small fern native to native to western North America, where it grows in the North American Cordillera from British Columbia south to central California and west to eastern Montana and Utah. Its leaves grow in clusters and are dissected into oblong segments, with dense hairlike scales on the underside and more or less absent on the upper side. One of the cheilanthoid lip ferns, it was usually classified in the genus Cheilanthes as Cheilanthes gracillima until 2013, when the genus Myriopteris was again recognized as separate from Cheilanthes. It grows in rocky habitats, usually over igneous rock....read more on Wikipedia.