Adiantum fulvum Raoul

Rhizome rather slender, creeping, clad in dark to bright brown subulate-attenuate paleae, c. 3 mm. long; stipites often approximate. Stipes rather stout, black-brown, scabrid, ± clad in slender hairs, paleate in lower portion, 10-30 cm. long. Rhachis similar, flexuose, ± clad in dark to fulvous stiff hairs, as are secondary rhachides and costae. Lamina ovate-deltoid to deltoid, 2-3-pinnate, 15-40 × 7-24 cm., olive to pale green, firm; lower surface ± clad in setulose hairs. Primary pinnae up to 15 × 7 cm., alt. distant, ovate-deltoid, with 2-4 lateral and a terminal pinna. Secondary pinnae rather distant, up to 8 × 2 cm. Pinnules up to 2.5 cm. × 5 mm., very shortly stalked, approximate, dimidiately narrow-oblong, ± subfalcate; lower margin entire, concave-convex; upper margin with alternately shallow and rather deep crenate to serrate lobes. Sporangia in sinuses of shallow lobes, protected by reniform reflexed margins, in about 6 rather distant groups.