Northeastern Asian Flora
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Asplenium prolongatum Hook.   (redirected from: Asplenium bipinnatum var. prolongatum Bonaparte)
Family: Aspleniaceae
[Asplenium achilleifolium C.Chr., moreAsplenium bipinnatum var. prolongatum Bonaparte]
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  • Japan Flora
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Japan Flora: Rhizomes short, ascending, covered with basal remains of old stipes, the scales narrowly lanceolate, 4-5 mm. long, about 1 mm. wide, acuminate, dark brown, with a narrow brown sparsely spined margin; fronds tufted; stipes flattened, sparsely scaly while young, 10-25 cm. long, the scales about 1 mm. long, spread­ing; blades 10-20 cm. long inclusive of the prolonged rachis gemmate at the tip, broadly lanceolate, bipinnate, the rachis green, flattened, with a slender raised midrib on upper side; pinnae 10-18 pairs, ascending, oblique, oblong to ovate, 15-40 mm. long, 6-12 mm. wide, obtuse, simply pinnate, petiolulate; pinnules about 5 pairs, herbaceous, ascending, linear, 5-10 mm. long, 1-1.5 mm. wide, obtuse, entire, the lower ones rarely 2 parted in vigorous fronds, 1-veined; sori solitary on the pin­nules, linear; indusia 3-7 mm. long.  Wet shaded rocks in mountains.

Honshu (Izu and Kii Prov.), Shikoku, Kyushu. s. Korea, Ryukyus, Formosa, China to India.

Asplenium prolongatum
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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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