Flora of North America species comparison

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

scales bicolored, linear-subulate, 0.1–0.3 mm wide, centers black, thick, margins brown, thin, erose-dentate.

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

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

monomorphic, clustered on stem, 6–40 cm;

croziers sparsely villous.

monomorphic, clustered on stem, 2.5–20 cm;

croziers sparsely villous.

dark brown, lustrous, flattened or slightly grooved adaxially, without prominent articulation lines.

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

linear-oblong, 2-pinnate proximally, 1.5–5 cm wide;

rachis brown throughout, straight, shallowly grooved adaxially, usually glabrous.

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

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

narrowly oblong, 5–20 mm, leathery, glabrous;

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

apex mucronate.

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.

perpendicular to rachis or slightly ascending, not decurrent on rachis, usually with 3–9 ultimate segments;

costae straight, 2–20 mm, usually shorter than ultimate segments.

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

costae absent.

of ultimate segments obscure.

of ultimate segments evident.

long-stalked, containing 64 spores, intermixed with sparse farina-producing glands.

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

= 116.

= 58.