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 mostly weakly bicolored, linear-subulate, 0.1–0.3 mm wide, centers dark brown, thin, margins lighter, thin, denticulate to entire.

somewhat dimorphic, sterile leaves shorter and less divided than fertile leaves, clustered on stems, 8–40 cm;

croziers sparsely villous.

monomorphic, clustered on stem, 7–30 cm;

croziers nearly glabrous.

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

dark brown, lustrous, rounded adaxially, without prominent articulation lines.

ovate-deltate, usually 2-pinnate proximally, 4–18 cm wide;

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

linear, 1-pinnate, 1.5–4 cm wide;

rachis brown throughout, straight, rounded adaxially, glabrous.

narrowly oblong, 4–10 mm, leathery, glabrous;

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

apex mucronate.

broadly ovate to elliptic, 7–20 mm, leathery, glabrous;

margins plane, not recurved, not covering abaxial surface, borders whitish, entire;

apex obtuse to rounded.

perpendicular to rachis to slightly ascending, not decurrent on rachis, usually with 9–25 ultimate segments;

costae straight, 20–70 mm, much longer than fertile ultimate segments.

perpendicular to slightly ascending, usually not decurrent on rachis, simple and unlobed;

costae absent.

of ultimate segments obscure.

of ultimate segments obscure.

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

sessile or subsessile, containing 64 spores, intermixed with abundant farina-producing glands.

= 58.

= 58.