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.

long-creeping, 1–3 mm diam.;

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

clustered, 4–25 cm;

vernation noncircinate.

clustered to somewhat scattered, 4–15 cm;

vernation noncircinate.

dark brown, rounded adaxially.

dark brown, grooved distally on adaxial surface.

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

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

ovate-deltate, 3-pinnate-pinnatifid at base, 1.5–5 cm wide;

rachis grooved adaxially, with scattered, lanceolate scales, not pubescent.

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.

spatulate, not especially beadlike, the largest usually 2–3 mm, abaxially glabrous or with a few small scales near base, adaxially glabrous.

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 conspicuously larger than adjacent pair, inequilateral, basiscopic pinnules enlarged, appearing glabrous adaxially.

marginal, weakly differentiated, 0.05–0.25 mm wide.

marginal, weakly differentiated, 0.05–0.25 mm wide.

± continuous around segment margins.

discontinuous, confined to apical or lateral lobes.

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 or subcordate at base, without overlapping basal lobes, conspicuous, the largest 0.4–0.8 mm wide, loosely imbricate, not concealing ultimate segments, erose, not ciliate.

= 60.