Amer. Fern J. 58: 141. 1968.
Leaves monomorphic or often somewhat dimorphic, 8–25 cm; fertile leaves more erect than sterile leaves, long-petioled, petioles often 2–5 times longer than blades, fertile blades with more ascending pinnae and narrower segments than sterile blades. Blade 3–4-pinnate, 2–10 cm, somewhat leathery. Ultimate segments linear, 3–8 mm; midrib prominent abaxially. Sori of mature blades continuous along length of segments except at apex; indusia linear, margins with 10–35, shallow, regular teeth or erose. 2n = 60.
Habitat: Slopes, crevices, rocky outcrops, often on serpentine, sometimes in chaparral
Elevation: 300–3400 m
B.C., Que., Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.