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.

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

scales often uniformly brown but at least some on each plant with well-defined, dark, central stripe, linear-lanceolate, slightly contorted, loosely appressed, persistent.

clustered, 7–50 cm;

vernation circinate.

clustered, 4–20 cm;

vernation circinate.

dark brown, rounded adaxially.

dark brown to black, 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 to lanceolate, 3-pinnate at base, 1–3 cm wide;

rachis rounded adaxially, lacking scales, with dense monomorphic pubescence.

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

round to slightly oblong, beadlike, the largest 1–3 mm, abaxially densely villous with long, segmented hairs, adaxially sparsely hirsute to 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 usually smaller than adjacent pair, ± equilateral, appearing sparsely pubescent to glabrescent adaxially.

marginal, weakly differentiated, 0.05–0.25 mm wide.

marginal, weakly differentiated, 0.05–0.20 mm wide.

discontinuous, concentrated on small apical and lateral lobes.

± continuous around segment margins.

containing 64 spores.

containing 32 spores.

brown adaxially for most of length;

abaxial scales absent.

brown adaxially for most of length;

abaxial scales absent.

= 2n = 90, apogamous.

= 60.