Northeastern Asian Flora
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Arachniodes mutica (Franch. & Sav.) Ohwi   (redirected from: Dryopteris mutica (Franch.) Sav.C. Chr.)
Family: Dryopteridaceae
[Aspidium muticum Franch. & Sav., moreByrsopteris mutica (Franch. & Sav.) C.V.Morton, Dryopteris mutica (Franch.) Sav.C. Chr., Leptorumohra mutica (Franch. & Sav.) Czerep., Polystichopsis mutica (Franch. & Sav.) Tagawa, Rumohra mutica (Franch. & Sav.) Ching]
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  • Japan Flora
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Japan Flora: Rhizomes stout, rather short) erect to ascending; stipes tufted, 15-35 cm. long, straw-colored; scales dense, narrowly oblong to broadly lanceolate, 15-2.5 cm. long, 3-5 (-7) mm. wide, abruptly filiform at the tip, sparsely ciliolate, lustrous, black-brown, those on upper part and on rachis linear-lanceolate to broadly linear, 3-6 mm. long, 0.2-1 mm. wide, spreading, contorted; blades ovate, 25-50 cm. long, 13-25 cm. wide, short-acuminate, tripinnate; pinnae obliquely spreading, narrowly ovate, acu­minate, the lowermost 5-10 cm. long, the posterior side broader than the anterior; pinnules narrowly ovate, 1-2.5 cm. long, obtuse to subacute, mucronate- to obtuse-toothed, pin­nately divided to parted, deep green and lustrous above, paler and minutely scaly beneath; sori on the upper part of blade, usually descending to the lower penultimate pair of pinnae, median; indusia orbicular-reniform, erose.  Coniferous woods in mountains.

Hokkaido, Honshu (Kinki Distr. and northw.), Shikoku, Kyushu (Yakushima). Sakhalin and Ko­rea (Dagelet Isl.).

Arachniodes mutica
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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