Flora of North America species comparison

compact to short-creeping, usually 4–8 mm diam.;

scales often uniformly brown but at least some on each plant with thin, poorly defined, dark, central stripe, 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, 7–50 cm;

vernation circinate.

clustered, 5–25 cm;

vernation noncircinate.

dark brown, rounded adaxially.

dark brown, rounded adaxially.

linear-oblong to lanceolate, usually 2-pinnate-pinnatifid at base, 1.5–5 cm wide;

rachis rounded adaxially, lacking scales, with monomorphic pubescence.

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

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

oblong to lanceolate, not beadlike, the largest 3–5 mm, abaxially and adaxially sparsely hirsute with long, segmented hairs.

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 slightly smaller than adjacent pair, ± equilateral, appearing sparsely hirsute 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, weakly differentiated, 0.05–0.25 mm wide.

marginal, slightly differentiated, 0.05–0.25 mm wide.

discontinuous, concentrated on small apical and lateral lobes.

± continuous around segment margins.

containing 64 spores.

containing 64 spores.

brown adaxially for most of length;

abaxial scales absent.

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.

= 60.