Flora of North America species comparison

usually long-creeping, 1.5–2.5 mm diam.

creeping, 4–8 mm diam.

monomorphic, dying back in winter, mostly evenly spaced 1 cm or more (sun-gathering leaves in loose cluster), (25–)40–85 cm.

monomorphic, evergreen, (0.5–)1–3.5 cm apart, (30–)65–140 cm.

straw-colored, 4–25 cm × 1–3 mm, at base with scales tan to reddish brown, ovate, glabrous.

straw-colored, 15–70 cm × 2–7(–9) mm, at base with scales tan to brownish, linear-lanceolate, hairy at margin.

elliptic, 15–60 cm, proximal 4–10 pinna pairs gradually smaller toward base (smallest often less than 5 mm), blade tapering gradually to pinnatifid apex.

30–70 cm, broadest at or near base, abruptly narrowed distally, apical pinna ± similar to lateral pinnae, 5–17 × 1–3(–5) cm.

deeply pinnatifid to within 1 mm of costa, 3–9(–13) × 1–2(–2.5) cm;

segments oblong to linear, somewhat oblique, entire to crenulate;

proximal pair of veins from adjacent segments meeting margin above sinus.

(4–)10–22(–28) × (0.3–)0.7–1.5 cm, incised 1/2–3/4 of width;

segments somewhat curved, margins revolute, those at base of proximal pinnae slightly elongate;

proximal pair of veins from adjacent segments running to sinus.

round, supramedial;

indusia tan, often ciliate;

sporangia glabrous.

round, medial to supramedial;

indusia tan, bearing hairs 0.2–0.4 mm;

sporangia glabrous.

abaxially of moderately to densely set hairs to 1 mm on rachises, costae, and veins, glands lacking or yellowish to light orangish, mostly sessile on blade tissue;

blades adaxially often with hairs on veins.

abaxially of hairs 0.2–0.4 mm on costae, veins, and blade tissue, also of brownish scales 0.6–1.2 mm on costae;

veins and blade tissue glabrous adaxially.

= 54.

= 144.