Flora of North America species comparison

usually long-creeping, 1.5–2.5 mm diam.

usually long-creeping, 3–6 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–)1–4 cm apart, (30–)55–135(–165) cm.

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

straw-colored, 15–80 cm × 2–6 mm, at base with tan to brownish, linear-lanceolate, hairy scales.

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.

about equaling petiole length, broadest at base, gradually to somewhat abruptly tapered to pinnatifid apex.

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.

(5–)10–25 × 0.8–2.2 cm, incised 4/5 of width;

segments oblique, somewhat curved, basal pair from middle pinnae often elongate parallel to rachis;

proximal pair of veins from adjacent segments reaching margin at or just above sinus.

round, supramedial;

indusia tan, often ciliate;

sporangia glabrous.

round, supramedial to inframarginal;

indusia tan, hairy, hairs mostly 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 mostly 0.2–0.5 mm on costae, veins, and blade tissue, also sometimes of a few tan scales on costae and rachises;

blades adaxially glabrous except along rachises and costae.

= 54.

= 72.