Northeastern Asian Flora
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Athyrium christensenianum (Koidz.) Seriz.  
Family: Aspleniaceae
[Athyrium crenulatoserrulatum f. hakonensis Makino, moreAthyrium hakonense (Makino) C.Chr., Cornopteris christenseniana (Koidz.) Tagawa, Cornopteris hakonensis (Makino) Nakai, Diplazium christensenianum Koidz.]
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  • Japan Flora
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Japan Flora: Differing chiefly in shorter sori; fronds glabrous, the costas often short-hairy on the underside of the ultimate pinnules; blades ovate-deltoid, bipinnate; pinnules oblong-ovate, 2-4 cm. long, 7-12 mm. wide, acute to obtuse, truncate at base, sessile or very slightly adnate to the scarcely winged rachis, lobulate to parted, obsoletely toothed; sori elliptic, median，about 1 mm. long. 

Honshu (Kanto to s. Kinki Distr.); rather rare.

Athyrium christensenianum
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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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