Northeastern Asian Flora
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Athyrium sheareri (Baker) Ching   (redirected from: Nephrodium isolatum Baker)
Family: Aspleniaceae
[Anisocampium sheareri (Baker) Ching, moreAspidium otarioides Christ, Athyrium concinnum Nakai, Dryopteris otarioides C.Chr., Dryopteris polypodiforme C.Chr., Dryopteris sheareri (Baker) C.Chr., Dryopteris subesagenioides Christ, Dryopteris subsagenioides Christ, Nephrodium isolatum Baker, Nephrodium polypodiforme Makino, Nephrodium sheareri Baker]
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  • Japan Flora
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Japan Flora: Rhizomes creeping, 3-4 mm. across, densely scaly toward the tip; stipes slender, 20-40 cm. long, glabrous, straw- colored or pale green, thinly scaly and dark brown toward base; scales brown, broadly linear, 3-5 mm. long, about 0.5 mm. wide, long-acuminate, entire; blades chartaceous, simply pinnate, broadly lanceolate to narrowly ovate, 20-30 cm. long, 10-20 cm. wide, caudately long acuminate, glabrous, the rachis and costas usually thinly white-puberulent on both sides; pinnae 5-7 pairs, alternate or subopposite, nearly equilateral, spreading, lanceolate to broadly so, caudately long-acuminate, falcate, truncate at base, sessile, the lower pinnae pinnately lobed to parted, 15-25(-30) mm. wide, short-petiolulate, the upper pinnae decurrent on the rachis, forming a pinnatilobed tail at the tip; pinnules oblong-ovate to lanceolate, 4-6 mm. wide, obtuse to acute, spine-toothed; veinlets simple or forked, ending in a tooth; sori 6-14, median or slightly nearer the costule than the margin; indusia short, obovate, straight, or more often reniform, 0.5-0.7 mm. across, dentate. 

Honshu (Izu and Echigo Prov. westw.), Shikoku, Kyushu. Korea (Quelpaert Isl.) and China.

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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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