Northeastern Asian Flora
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Yoania amagiensis Nakai & F.Maek.  
Family: Orchidaceae
[Yoania japonica var. amagiensis (Nakai & F.Maek.) M.Hiroe]
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  • Japan Flora
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Japan Flora: Rhizomes much branched, thickened, puber- ulent, membranous-scaly at the nodes; stems erect, 20-30 cm. long, fleshy, stout, terete, with scattered deltoid scales; flowers 6-15, rather dense, yellow; sepals oblong, 25-27 mm. long, rounded at apex, about 9-nerved; petals ovate, obtuse, minutely serrate; lip about 22 mm. long, inflated; spur porrect, slightly longer than the limb, incurved, 6-8 mm. long, 4-5 mm. across, rounded at the apex, the limb broadly ovate, obtuse, longitudinally ridged; ovary, inclusive of long pedicel, 8-10 cm. long. July. Woods in foothills;

Honshu (Izu, sw. Kanto and Yamato Prov.), Kyushu; rare.

Yoania amagiensis
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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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