Flora of North America species comparison

short-creeping, usually 3–7 mm diam.;

scales usually bicolored, with broad, well-defined, dark, central stripe and narrow, light brown margins, linear-lanceolate, straight to slightly contorted, strongly appressed, persistent.

short-creeping, usually 4–7 mm diam.;

scales uniformly brown or with poorly defined, dark central stripe, linear-lanceolate, straight to slightly contorted, loosely appressed, persistent.

clustered, 4–25 cm;

vernation noncircinate.

clustered, 5–30 cm;

vernation noncircinate.

dark brown, rounded adaxially.

black to dark brown, rounded adaxially.

lanceolate to ovate-deltate, usually 3-pinnate at base, 1–4 cm wide;

rachis rounded adaxially, with scattered scales and sparse monomorphic pubescence.

linear-oblong to lanceolate, pinnate-pinnatifid to 2-pinnate at base, 1–4 cm wide;

rachis rounded adaxially, with scattered linear-lanceolate scales and dimorphic pubescence, abaxially sparsely hirsute, adaxially covered with tortuous, appressed hairs.

oblong to ovate, beadlike, the largest 1–3 mm, abaxially densely covered with branched hairs and small, ciliate scales, adaxially with scattered branched hairs or glabrescent.

narrowly elliptic to elongate-deltate, not beadlike, the largest 3–5 mm, abaxially and adaxially scabrous with stiff, usually pustulose hairs.

not articulate, dark color of stalk continuing into pinna base, basal pair not conspicuously larger than adjacent pair, usually equilateral, appearing glabrous to sparsely pubescent adaxially.

not articulate, dark color of stalk continuing into pinna base, basal pair not conspicuously larger than adjacent pair, usually equilateral, appearing pustulose adaxially.

marginal, weakly differentiated, 0.05–0.25 mm wide.

marginal, slightly differentiated, 0.05–0.25 mm wide.

± continuous around segment margins.

± continuous around segment margins.

containing 64 spores.

containing 64 spores.

green adaxially for most of length;

abaxial scales multiseriate, ovate-lanceolate, deeply cordate at base, with overlapping basal lobes, conspicuous, the longest 0.4–1 mm wide, imbricate, often concealing ultimate segments, long-ciliate, cilia usually confined to proximal 1/2.

green adaxially for most of length;

abaxial scales multiseriate, lanceolate, truncate to subcordate at base, without overlapping basal lobes, somewhat inconspicuous, the largest 0.4–0.6 mm wide, loosely imbricate, not concealing ultimate segments, erose, not ciliate.

= 58, 116.