Stock stout, often forming a distinct caudex up to 6 dm. tall, invested by bases of stipites. Fronds crowded, spreading, up to 1 m. long; stipites greenish brown, nude or with lines or patches of woolly brownish hairs, up to 30 cm. long and 5 mm. diam. or more; rhachides similar. Lamina up to 80 cm. or more long, about ovate-deltoid in outline, acuminate. Primary pinnae 2-3 cm. apart, uppermost under 3 cm. long, mid up to 15 cm., lowest c. 6 cm. long. Pinnules pellucid, pinnately dissected, 5 mm. apart, in one plane not overlapping, up to 20 mm. long, segs linear. Sporangia along vein of pinnules, mostly in lower ⅔ of pinnae.