Northeastern Asian Flora
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Diplopterygium glaucum (Thunb. ex Houtt.) Nakai  
Family: Gleicheniaceae
[Gleichenia glauca (Thunb. ex Houtt.) Hook., moreGleichenia japonica Spreng., Gleichenia longissima Blume, Hicriopteris critica Ching & P.S.Chiu, Hicriopteris glauca (Thunb. ex Houtt.) Ching, Hicriopteris glaucoides Ching, Hicriopteris omeiensis Ching & P.S.Chiu, Polypodium glaucum Thunb. ex Houtt.]
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  • Japan Flora
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Japan Flora: Rhizomes long-creeping, terete, 5-6 mm. across, wiry, densely scaly while young; stipes terete; scales lanceolate-deltoid, 6-7 mm. long, caudate, ciliate, lustrous, dark brown; fronds scaly while very young, the dormant terminal bud densely scaly, rufous to dark brown, ciliate; pinnae chartaceous, opposite, 50-100 cm. long, 20-30 cm. wide, bipinnatiparted, green, slightly lustrous above, glaucous beneath, glabrous; pinnules many, horizontally spreading, linear-lanceolate to broadly linear, 15-30 mm. wide, sessile, pinnatiparted, the ultimate seg­ments spreading, narrowly oblong, obtuse; costa impressed above, the costules slender; veins once forked; sori median; on the anterior branches of the veins. Nov.-Jan. Dry, thin woods.

Honshu (Iwaki and Echigo Prov. westw.), Shikoku, Kyushu; common. Korea, Ryukyus, Formosa, China, the Tropics of Asia, Australia, and Polynesia.

Diplopterygium glaucum
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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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