Northeastern Asian Flora
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Woodwardia japonica (L.f.) Sm.  
Family: Aspleniaceae
[Blechnum japonicum L.f., moreWoodwardia affinis Ching & P.S.Chiu, Woodwardia intermidia Christ, Woodwardia japonica var. contigua Ching & P.S.Chiu, Woodwardia japonica var. latisecta Tagawa, Woodwardia omeiensis Ching & P.S.Chiu]
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  • Japan Flora
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Japan Flora: Rhizomes stout, short; stipes stout, straw-colored or somewhat rubescent, 30-50 cm. long, prominently scaly; scales on upper portion of stipes deep-brown, membranous, deltoid-lanceolate to broadly linear, deflexed, or those on lower portion of stipes ascending, acumi­nate, 7-15 mm. long, the scales at base of stipes broadly linear, 15-20 mm. long; blades oblong-ovate, 40-80 cm. long, 20-35 cm. wide, somewhat contracted toward the tip, the terminal segment deltoid-ovate to broadly lanceolate, acuminate; pin­nae 10-15 pairs, obliquely spreading, lanceolate to linear- lanceolate, 15-22 cm. long, 2-4.5 cm. wide, long-acuminate, minutely toothed, pinnately lobed to cleft, the pinnules oblong- ovate, 7-25 mm. long, 6-12 mm. wide, acute or subobtuse, obliquely spreading, sessile, with a rounded lobe on the pos­terior side at base, cuneate on the anterior side; sori 3-5 mm. long, along the costules of the pinnules, to 7 mm. long on the upper part of costas of the pinnae.

Honshu (Kii Prov. and Chugoku Distr.), Shikoku, Kyushu. Korea (Quelpaert Isl.), Formosa, China, and Indochina.

Woodwardia japonica
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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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