Plants 10-30 cm tall. Rhizome long creeping, 1.2-3.7 mm in diam., in cross section with a few sclerenchyma strands; phyllopodia (0.5-)2-8 cm apart, lateral buds alternating with phyllopodia. Scales peltate, usually distinctly spreading, 5-9.5 × 0.9-2 mm, base dark at attachment, entire to irregularly dentate; acumen shiny, light brown, with long, curly marginal as well as superficial cilia; short, ± ovate scales occasionally present. Fronds weakly dimorphic, stipitate. Sterile fronds: stipe 4-14 cm; lamina widest at or below middle, 14-25 × 4-7.5 cm, base truncate to ± cuneate, apex acuminate or occasionally apiculate. Fertile fronds similar or somewhat narrower. Hydathodes distinct, ± superficial. Indument persistent, dimorphic, dense, whitish to grayish brown; upper layer with hairs 0.4-0.8 mm in diam., with appressed, boat-shaped rays, lower layer with woolly rays. Sori superficial, without central bundle of paraphyses. Sporangia with stalks 0.75-1 × as long as capsule.
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