Cyrtomium auriculatum (L. Underwood) C. V. Morton

Leaves 10--60(--75) cm, very short leaves sometimes fertile. Pinnae (2--)5--12 pairs, ovate to lanceolate, usually falcate, 2--9 cm, base obliquely cuneate to nearly cordate, apex usually attenuate; acroscopic lobe usually present, prominent (at least some present on every leaf); pinnae rarely irregularly incised. Indusia membranous, flat or concave centrally, not umbonate, shriveled at maturity. 2n = 164.

Soil pockets in sheltered rock crevices of canyons and ravines; 600--2100 m.; Ariz., N.Mex., Tex.; n Mexico.