Description from Flora of China
Rhizome robust, erect or oblique, covered with brown lanceolate scales. Fronds tufted. Stipe and rachis grooved adaxially. Sterile lamina bipinnatifid and apex pinnatifid, elliptic-oblanceolate to oblanceolate, papery or thinly papery, subglabrous or with few hairs or scales on rachis and costae; pinnae alternate, sessile, narrowly lanceolate, pinnatifid to 1/2; lobes oblique, oblong to elliptic, subentire or subserrate; veins free, pinnate, veinlets reaching lamina margin. Fertile lamina smaller than sterile lamina; lamina pinnate, elliptic to broadly oblanceolate; pinnae linear, alternate, subsessile, much inrolled into brown cylinders, concealing sori. Sori globose, with raised receptacles, borne at ends of veinlets, indusiate; sporangia spheroidal, slenderly stalked, annulus longitudinal, consisting of ca. 40 thick-walled cells; spores elliptic, perispore transparent, slightly folded.
One species: temperate zone of the N Hemisphere.