Northeastern Asian Flora
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Thelypteris nipponica (Franch. & Sav.) Copel.  
Family: Aspleniaceae
[Aspidium nipponicum Franch. & Sav., moreDryopteris nipponica (Franch. & Sav.) C.Chr., Lastrea nipponica (Franch. & Sav.) Copel., Lastrea nipponica var. borealis (H.Hara) Tagawa, Parathelypteris nipponica (Franch. & Sav.) Ching, Parathelypteris nipponica var. borealis (H.Hara) K.H.Shing, Thelypteris nipponica var. borealis (H.Hara) H.Hara, Wagneriopteris nipponica Love & Love]
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  • Japan Flora
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Japan Flora: Rhizomes creeping, rather densely covered with the basal stubs of old stipes; stipes slender, 15-30 cm. long, the fertile up to 40 cm. long, straw- colored, dark brown at base, very sparsely scaly; scales ovate, 2-4 mm. long, abruptly acuminate, dark brown, with a few spinelike teeth; blades thinly herbaceous, broadly oblanceolate to oblong, 20-40 cm. long, 8-15 cm. wide, fertile ones often narrower, acuminate, somewhat narrowed at base; sterile pinnae contiguous, the fertile distant, broadly linear to lanceo­late, 8-15 mm. wide, acuminate with an acute to subobtuse tip, sessile, with a stipulelike lobe at base, thinly pilose, pin- natiparted, the fertile pinnae often with recurved margins, the costas pilose above, white-villous beneath at least on lower half; veinlets usually simple, reaching the margin; indusia membranous, orbicular-reniform, glandular and sometimes pilose, 0.5-0.7 mm. across.

Hokkaido, Honshu (centr. And n. distr.). Korea and China.

Thelypteris nipponica
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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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