Phajus flavus (Bl.) Lindl.

Japanese: ガンゼキラン（英語表記）Phajus flavus (Bl.) Lindl.

A terrestrial orchid (illustration) that grows on the forest floor of evergreen forests in the subtropical zone of Japan. It is an orchidaceae plant that is striking for its large yellow flowers and yellowish-brown edges on the lip. The pseudobulb is ellipsoidal, 4-8 cm long, and its upper stem is wrapped in a leaf sheath and inconspicuous. It has 3-5 leaves, an oblong leaf blade 20-40 cm long, 5-8 cm wide, and wrinkled vertically, and the leaf sheath is 20-30 cm long. The flower stalk grows laterally from the base of the pseudobulb, is 40-60 cm tall, and bears 10-20 flowers from April to July. The flowers are yellow, about 5 cm in diameter, and open or half-open.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

日本の暖帯以南の常緑樹林の林床に生える地生ラン（イラスト）。大型の黄色い花と唇弁の黄褐色の縁どりが印象的なラン科植物。偽球茎は楕円体状で，長さ4～8cm，その上部の茎は葉鞘（ようしよう）に包まれ目立たない。葉は3～5枚，葉身は長楕円形で長さ20～40cm，幅5～8cm，縦じわがあり，葉鞘は長さ20～30cm。花茎は偽球茎の基部より側生し，高さ40～60cm，10～20花を4～7月につける。花は黄色，直径約5cm，開出または半開する。

出典　株式会社平凡社世界大百科事典第２版について　情報

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