Flora of North America species comparison

compact, 4–8 mm diam.;

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

short-creeping, 4–8 mm diam.;

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

clustered, 6–35 cm;

vernation noncircinate.

clustered, 5–25 cm;

vernation noncircinate.

dark brown, rounded adaxially.

dark brown, rounded adaxially.

oblong-lanceolate, 3–4-pinnate at base, 1.5–5 cm wide;

rachis rounded adaxially, with scattered linear-lanceolate scales and monomorphic pubescence.

linear-oblong, 2–3-pinnate at base, 1–2.5 cm wide;

rachis rounded adaxially, with scattered linear scales, not pubescent.

oval to round, beadlike, the largest 1–3 mm, abaxially densely tomentose, adaxially pubescent with fine, unbranched hairs or glabrescent.

oblong or rarely oval, beadlike, the largest 1.5–3 mm, abaxially densely covered with branched hairs and small, ciliate scales, adaxially with scattered, branched hairs or glabrescent.

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

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

marginal to obscurely inframarginal, somewhat 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 32 spores.

containing 64 spores.

green adaxially for most of length;

abaxial scales multiseriate, lanceolate to linear, truncate or subcordate at base, without overlapping basal lobes, conspicuous, the largest 0.4–0.7 mm wide, loosely imbricate, not concealing ultimate segments, erose-dentate, rarely with 1–2 cilia at base on a few scales.

green adaxially for most of length;

abaxial scales multiseriate, linear, truncate at base, inconspicuous, the largest 0.1–0.4 mm wide, loosely imbricate, not concealing ultimate segments, long-ciliate, cilia usually confined to base.

= 2n = 90, 120, apogamous.