Petiole (7--)15--55 cm; scales brown to dark brown, linear-lanceolate, 8(--10) × 2 mm. Blade elliptic, 2-pinnatifid to 2-pinnate, (20--)30--75 × (5--)10--35 cm, moderately narrowed proximally, broadest near or just below middle, apex acuminate. Pinnae short-stalked or sessile, oblong-lanceolate. Pinnules decurrent onto costal wing or sessile, linear to oblong, base unequally cuneate, apex obtuse to acute or in larger leaves acuminate, lobed halfway or more to costules. Rachis , costae, and costules glabrous or with pale glands. Sori straight, less frequently hooked at distal end or horseshoe-shaped; sporangial stalks bearing glandular hairs; indusia irregularly dentate, ± ciliate. Spores yellow or brown. 2 n = 80.
|Northern lady fern|