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, usually 4–8 mm diam.;

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

clustered, 7–50 cm;

vernation circinate.

clustered, 8–25 cm;

vernation circinate.

dark brown, rounded adaxially.

dark brown, grooved most of length adaxially.

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

rachis rounded adaxially, lacking scales, with monomorphic pubescence.

elongate-pentagonal, 3-pinnate-pinnatifid to 4-pinnate at base, 4–10 cm wide;

rachis grooved adaxially, lacking scales, with minute, widely scattered hairs.

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

elliptic to linear-oblong, not beadlike, the largest 4–10 mm, abaxially with reddish, scattered, sessile glands, adaxially glabrous;

false indusia marginal to obscurely inframarginal, strongly differentiated, 0.25–0.50 mm wide.

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

marginal, weakly differentiated, 0.05–0.25 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.

green adaxially for most of length;

abaxial scales absent.

= 2n = 90, apogamous.

= 60.