Northeastern Asian Flora
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Botrychium strictum Underw.  
Family: Ophioglossaceae
[Botrypus strictus (Underw.) Holub, moreJapanobotrychium strictum (Underw.) Nishida ex Tagawa, Osmundopteris stricta (Underw.) Nishida]
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  • Japan Flora
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Japan Flora: Deciduous, thinly hairy to nearly glabrous herb, 30-80 cm. high; stems terete, rather stout, slighdy thickened, commonly with a membranous ovate entire brown scale 2-3 cm. long at base; sterile blade sessile, ternately divided, the main lateral branches ovate, 15-30 cm. long, 10- 20 cm. wide, bipinnate, short-acuminate, short-petiolate, the rachis narrowly winged; pinnae acuminate, sessile, the pinnules oblong-ovate, toothed, pinnatiparted, the terminal primary seg­ment deltoid; fertile panicle linear-cylindric, 10-30 cm. long, scarcely or not overtopping the sterile blade. Aug.-Oct.

Hokkaido, Honshu, Shikoku, Kyushu; rare. Korea and China.

Botrychium strictum
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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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