东北亚鳞毛蕨 dong bei ya lin mao jue

Dryopteris crassirhizoma Nakai var. setosa (Christ) Miyabe & Kudô; D. filix-mas (Linnaeus) Schott var. setosa Christ.

Plants 70-120 cm tall. Rhizome erect, stout; scales ferruginous, oblong-lanceolate, thin, entire. Fronds caespitose; stipe ebeneous or brown, glossy, 10-20 cm, densely scaly; scales dark brown, broadly lanceolate or lanceolate, 1.2-1.5 cm × 3-4 mm, entire, long acuminate; lamina elliptic-lanceolate, 60-80 cm, 20-25 cm wide at middle, bipinnate, gradually narrowed toward base, apex acuminate; pinnae ca. 30 pairs, oblique, alternate, 2-4 cm apart, lanceolate, ca. 13 × 2.5 cm, apex acuminate; pinnules ca. 18 pairs, spreading, approximate, lower 2 or 3 pairs remote, rachis between winged, oblong, 1-1.5 cm × 4-6 mm, apex rounded, slightly narrowed deltoid-dentate. Lamina thinly papery, both surfaces subglabrous; rachis densely clothed with lanceolate, fibrillose, pale brown scales adaxially; veins pinnate, distinct on both surfaces. Sori in 1 regular row between costa and margin; indusia ferruginous, orbicular-reniform, papery.

Meadows, damp places. Heilongjiang, Jilin [Japan, Korea, E Russia].