Flora of North America species comparison

short-creeping, usually 4–8 mm diam.;

scales uniformly brown, linear-subulate, strongly contorted, loosely appressed, persistent.

short-creeping, usually 4–7 mm diam.;

scales uniformly brown or slightly darker at base, linear-lanceolate, straight to slightly contorted, loosely appressed, persistent.

clustered, 6–30 cm;

vernation circinate.

clustered, 10–50 cm;

vernation noncircinate.

dark brown, flattened or slightly grooved distally on adaxial surface.

black to dark brown, rounded adaxially.

narrowly oblong to linear, 3-pinnate-pinnatifid at base, 1–4 cm wide;

rachis flattened or slightly grooved adaxially, lacking scales, with monomorphic pubescence.

ovate-deltate, 3-pinnate to 3-pinnate-pinnatifid at base, 4–15 cm wide;

rachis rounded adaxially, lacking scales, with dimorphic pubescence, abaxially sparsely hirsute, adaxially covered with tortuous, appressed hairs.

oblong to lanceolate, not beadlike, the largest 3–4 mm, abaxially and adaxially glandular-pubescent with short, sticky, capitate glands.

narrowly elliptic to elongate-deltate, not beadlike, the largest 3–6 mm, abaxially and adaxially sparsely hirsute to glabrescent.

not articulate, dark color of stalk continuing into pinna base, basal pair slightly smaller than adjacent pair, ± equilateral, appearing glandular pubescent adaxially.

not articulate, dark color of stalk continuing into pinna base, basal pair slightly larger than adjacent pair, somewhat inequilateral, proximal basiscopic pinnules conspicuously enlarged, appearing glabrous or sparsely pubescent adaxially.

marginal, weakly differentiated, 0.05–0.25 mm wide.

marginal, slightly differentiated, 0.05–0.25 mm wide.

usually discontinuous, concentrated on apical and lateral lobes.

somewhat discontinuous, often concentrated on interrupted lateral lobes.

containing 64 spores.

containing 64 spores.

green adaxially for most of length;

abaxial scales absent.

black adaxially for most of length;

abaxial scales absent.

= 58.