Northeastern Asian Flora
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Trichomanes birmanicum Bedd.  
Family: Hymenophyllaceae
[Crepidomanes amabile (Nakai) K.Iwats., moreCrepidomanes birmanicum (Bedd.) K.Iwats., Lacosteopsis orientalis (Christ) Nakai, Lacosteopsis orientalis var. abbreviata (Christ) Nakaike, Trichomanes japonicum var. abbreviatum Christ, Trichomanes kalamocarpum Hayata, Trichomanes nipponicum Nakai, Trichomanes orientale C.Chr., Trichomanes quelpaertense Nakai, Trichomanes radicans var. birmanicum C.Chr., Trichomanes radicans var. orientale (C.Chr.) Lellinger, Trichomanes × amabile Nakai, Trichomanes × stenosiphon Christ, Vandenboschia amabilis (Nakai) K.Iwats., Vandenboschia birmanica (Bedd.) Ching, Vandenboschia kalamocarpa (Hayata) Ebihara, Vandenboschia nipponica (Nakai) Ebihara, Vandenboschia orientalis (C.Chr.) Ching, Vandenboschia parva (Copel.) Copel., Vandenboschia radicans var. abbreviata (Christ) Sa.Kurata, Vandenboschia radicans var. angustata (Christ) K.Iwats., Vandenboschia radicans var. nipponica (Nakai) H.Ito, Vandenboschia radicans var. orientalis (Christ) H.It?, Vandenboschia stenosiphon (Christ) Copel., Vandenboschia striata (D.Don) Ebihara]
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  • Japan Flora
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Japan Flora: Plant nearly glabrous; rhizomes slender, 0.5-1 mm. across, with dark brown lustrous jointed hairs, remotely leaved; fronds 10-20 cm. long; stipes 4-7 cm. long, winged; blades more or less 3-angled, narrowly ovate to broadly lanceo­late, 8-15 cm. long, 3-6 cm. wide, the rachis narrowly winged; pinnae bipinnatiparted; pinnules linear, usually 0.5-0.7 mm. wide, obtuse; indusia 1.2-1.5 mm. long, exserted, tubular, nar­rowed at base, the mouth somewhat dilated and truncate.                       

Honshu (Awa, Izu Isis, and westw.), Shikoku, Kyushu; rather common. Ryukyus and Formosa.

var. nipponica (Nakai) H. Ito. Rhizomes 0.2-0.5 mm. across; fronds 5-10 cm. long; blades 3-8 cm. long. Hok­kaido, Honshu, Kyushu. Korea (Quelpaert Isl).

var. naseana (Christ) H. Ito. Rhizomes 1-1.5 mm. across; fronds 20-40 cm. long; blades 15-30 cm. long; indusia tubular, not distinctly constricted or dilated above, 1.5-2 mm. long. Honshu (Izu and Kii Prov.), Kyu­shu. Ryukyus and Formosa. The typical variety is pantropic.

Trichomanes birmanicum
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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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