Northeastern Asian Flora
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Onoclea orientalis (Hook.) Hook.   (redirected from: Pteretis japonica Ching)
Family: Aspleniaceae
[Matteuccia cavaleriana (Christ) C.Chr., moreMatteuccia japonica (Hayata) C.Chr., Matteuccia orientalis (Hook.) Trevis., Matteuccia orientalis f. incisa (Christ) Okuy., Pentarhizidium japonicum Hayata, Pentarhizidium orientale (Hook.) Hayata, Pentarhizidium orientalis var. incisum Tagawa, Pteretis japonica Ching, Pteretis orientalis Ching, Pterinodes orientalis (Hook.) Kuntze, Struthiopteris cavaleriana Christ, Struthiopteris orientalis Hook., Struthiopteris orientalis var. incisa Christ]
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  • Japan Flora
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Japan Flora: Rhizomes stout; fronds deciduous, crowded, the sterile longer than the fertile; stipes of sterile fronds 20-60 cm. long, prominently scaly, straw-colored, the scales membranous, pale brown, linear-lanceolate to narrowly ovate, 7-20 mm. long, 1.5-4 mm. wide, long-acuminate, lus­trous, entire; blades ovate-elliptic to broadly lanceolate-deltoid, 30-50 cm. long, 20-30 cm. wide, pinnate, abruptly short-acumi­nate, the rachis scaly; pinnae 8-20 pairs, narrowly lanceolate, 10-15 cm. long, 1.5-4(-5) cm. wide, nearly truncate at base, sessile, closely pinnatilobed, glabrous on both sides or brown paleate along the costa beneath; segments ovate, 4-7 mm. wide, obtuse to acute, obliquely spreading, toothed, the veins simple; fertile fronds 30-70 cm. long, the stipes terete, usually longer than the 1-sided blade, the pinnae close, ascending, dark brown, broadly linear, 5-10 cm. long, 5-6 mm. wide, sessile. Sept.-Nov.

Hokkaido, Honshu, Shikoku, Kyushu. s. Kuriles, Korea, China to the Himalayas.

Onoclea orientalis
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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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