Northeastern Asian Flora
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Botrychium virginianum (L.) Sw.  
Family: Ophioglossaceae
[Botrychium brachystachys Kunze, moreBotrychium charcoviense Port., Botrychium dichronum Underw., Botrypus virginianus (L.) Michx., Botrypus virginicus (L.) Michx., Japanobotrychium virginianum (L.) M.Nishida ex Tagawa, Osmunda virginiana L.]
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  • Japan Flora
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Japan Flora: Deciduous, thinly hairy rather soft herb, 30-60 cm. high; stems with a brown mem­branous scale 2-3 cm. long at base; sterile blade sessile, ter­nately divided, green, the main lateral branches ovate, 10-20 cm. long, 5-15 cm. wide, short-acuminate, shortpetiolulate, bi­pinnate; pinnae lanceolate to oblong-lanceolate, the pinnules oblong to narrowly ovate, pinnately lobed and toothed, sessile or somewhat adnate on the prominendy winged rachis, the primary terminal segment deltoid; fertile panicle ovate to broadly lanceolate, 7-13 cm. long, compound, longer than and overtopping the sterile blade.  May-June. Woods.

Hokkaido, Honshu, Shikoku, Kyushu; rather rare. Korea, Man­churia, China, Himalayas, Siberia to Europe, and N. America.

Botrychium virginianum
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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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