Flora of North America species comparison

short- to long-creeping, 3–10 mm diam.

monomorphic to somewhat dimorphic, evergreen, fertile leaves with longer petioles, to 2 m or more.

tan, to ca. 1 m × 10 mm, at base with scales absent or ephemeral.

50–120 cm, with apical pinna similar to lateral pinnae and 1/2 to nearly equaling longest lateral pinna;

buds often present at base of proximal pinna.

to 20 pairs or more, widest at or near rounded or broadly cuneate base, 20–30 × 2–6 cm, margin entire to crenulate;

main lateral veins of fertile pinnae 2–4 per cm, with 12–20 rows of areoles between costa and margin, secondary veins somewhat curved.

oblong-arcuate, uniseriate between lateral veins on cross-veins;

indusia lacking;

sporangia glabrous.

abaxially of mostly adpressed, curved hairs 0.2–0.3 mm on costae;

blades glabrous adaxially.

= 144.