Flora of North America species comparison

compact, ascending, stout, 5–10 mm diam.;

scales uniformly reddish brown, linear-subulate, 0.1–0.3 mm wide, thin, margins sinuous, nearly entire.

compact, ascending, stout, 5–10 mm diam.;

scales uniformly reddish brown, linear-subulate, 0.1–0.3 mm wide, thin, margins entire to denticulate.

monomorphic, clustered on stem, 2.5–20 cm;

croziers sparsely villous.

somewhat dimorphic, sterile leaves shorter than fertile leaves, clustered on stem, 8–25 cm;

croziers villous.

brown, lustrous, rounded adaxially, with prominent articulation lines near base.

reddish purple to dark brown, lustrous, rounded adaxially, without prominent articulation lines.

linear-oblong, pinnate-pinnatifid proximally, 1–4 cm wide;

rachis brown proximally, green distally, straight, rounded adaxially, glabrous to sparsely villous.

elongate-deltate to lanceolate, 2-pinnate proximally, 3–6 cm wide;

rachis purple or brown throughout, straight, rounded adaxially, sparsely villous with long, divergent hairs.

lanceolate-deltate, 5–25 mm, herbaceous, glabrous;

margins recurved on fertile segments, covering less than 1/2 abaxial surface, borders whitish, erose-denticulate;

apex obtuse or rounded.

oblong-lanceolate, 7–30 mm, leathery, sparsely villous abaxially near midrib;

margins usually recurved on fertile segments, covering less than 1/2 abaxial surface, borders whitish, crenulate;

apex obtuse to slightly mucronate.

ascending or perpendicular to rachis, decurrent on rachis, deeply 2-lobed (mitten-shaped) near base of leaf;

costae absent.

ascending or perpendicular to rachis, not decurrent on rachis or obscurely so, usually with 3–7 ultimate segments;

costae straight, 2–30 mm, usually shorter than ultimate segments.

of ultimate segments evident.

of ultimate segments obscure.

sessile or subsessile, containing 64 spores, not intermixed with farina-producing glands.

long-stalked, containing 32 spores, not intermixed with farina-producing glands.

= 58.