Flora of North America species comparison

short- to long-creeping, 4–8 mm diam.

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

monomorphic, evergreen, up to 2(–3) cm apart, (15–)50–160 cm.

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

straw-colored, (5–)20–80 × (1–)3–6 mm, at base with brown, linear-lanceolate, hairy scales.

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

(9–)30–80 cm, broadest at base, gradually tapered to pinnatifid apex.

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.

(2–)8–15(–20) × (0.6–)1–2.5 cm, incised 3/5–4/5 of width;

segments oblong, rounded to acute at apex;

proximal pair of veins from adjacent segments running to sinus, or nearly so.

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.

round, medial to supramedial;

indusia tan, hairy, hairs 0.2–0.4 mm;

sporangial glands obscure, yellowish, stalked, arising from sporangial stalks.

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

indusia lacking;

sporangia glabrous.

abaxially of hairs mostly 0.3–1 mm on costae, veins, and blade tissue;

veins adaxially with similar hairs but blade tissue usually without hairs, often with scattered yellowish, stalked glands 0.1 mm.

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

blades glabrous adaxially.

= 144.

= 144.