Flora of North America species comparison

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.

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

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

monomorphic, clustered on stem, 7–30 cm;

croziers nearly glabrous.

monomorphic, clustered on stem, 2–40 cm;

croziers sparsely villous.

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

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

linear, 1-pinnate, 1.5–4 cm wide;

rachis brown throughout, straight, rounded adaxially, glabrous.

linear-oblong to ovate-lanceolate, 1–2-pinnate proximally, 1–8 cm wide;

rachis brown throughout, straight, rounded adaxially, nearly glabrous.

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

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

apex obtuse to rounded.

oblong-lanceolate, 5–20 mm, leathery to herbaceous, glabrous except for occasional hairlike scales abaxially near midrib;

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

apex obtuse.

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

costae absent.

somewhat ascending, decurrent on rachis, usually with 3–7 lobes or ultimate segments;

costae when present straight, 1–50 mm, often shorter than ultimate segments.

of ultimate segments obscure.

of ultimate segments usually obscure.

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

long-stalked, containing 32 or 64 spores, not intermixed with farina-producing glands.

= 58.