Flora of North America species comparison

scales weakly bicolored, margins brown, narrow, poorly defined, thin, sparsely ciliate-denticulate.

scales concolored to weakly bicolored, margins usually brown, very narrow and poorly defined, thin, ciliate-denticulate.

7–30 cm.

5–15 cm.

black to dark brown, much shorter than blade, grooved or flattened adaxially, bearing scattered glands and a few scales near base.

brown, equal to or shorter than blade, rounded adaxially, glandular-farinose, bearing scattered hairs and scales.

linear-lanceolate, 2-pinnate-pinnatifid, 3–6 times longer than wide, abaxially with conspicuous white or pale yellow farina, scales absent, adaxially glabrous at maturity;

basal pinnae usually slightly smaller than adjacent pair, ± equilateral, proximal basiscopic pinnules not greatly enlarged.

linear-lanceolate, 2-pinnate-pinnatifid, 3–6 times longer than wide, abaxially with conspicuous cream-colored or pale yellow farina and dull, light brown, narrowly lanceolate, ciliate scales scattered along rachises and costae, adaxially sparsely glandular and villous with long, multicelled, whitish hairs;

basal pinnae equal to or slightly larger than adjacent pair, ± equilateral, proximal basiscopic pinnules not greatly enlarged.

sessile, broadly adnate to costae;

segment margins slightly recurved, rarely concealing sporangia.

sessile, broadly adnate to costae;

segment margins slightly recurved, rarely concealing sporangia.

containing 64 spores.

containing 16 spores.

= 60.