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, 6–10 mm diam.;

scales uniformly orange-brown and thin, lanceolate to ovate, largest scales 0.3–1 mm wide, margins dentate.

monomorphic, clustered on stem, 7–30 cm;

croziers nearly glabrous.

somewhat dimorphic, sterile leaves shorter than fertile leaves, clustered on stem, 15–50 cm;

croziers not conspicuously pubescent, densely scaly.

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

straw-colored, tan, or gray, not lustrous, rounded or slightly flattened adaxially, without prominent articulation lines.

linear, 1-pinnate, 1.5–4 cm wide;

rachis brown throughout, straight, rounded adaxially, glabrous.

ovate-deltate, 2-pinnate proximally, 5–20 cm wide;

rachis tan throughout, straight to slightly flexuous, rounded or flattened adaxially, 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.

round-cordate to deltate-cordate, 5–15 mm, herbaceous to leathery, glabrous or puberulent;

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

apex rounded or retuse.

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

costae absent.

perpendicular to rachis or slightly ascending, not decurrent on rachis, usually with 3–15 ultimate segments;

costae straight to slightly flexuous, 25–100 mm, longer than ultimate segments.

of ultimate segments obscure.

of ultimate segments usually evident.

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

short-stalked, containing 64 spores, not intermixed with farina-producing glands.

= 58.

= 58.