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わが国の本州、中部地方以北から北海道、それにユーラシア大陸北部に分布しています。山野に生え、高さは15〜20センチになります。鱗茎は卵形で、線形の葉を1個だけだします。4月から5月ごろ、花茎を伸ばして散形花序をだし、6〜10個の黄色い花を咲かせます。果実は球形の刮ハで、3室があります。
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ラン科キバナノアマナ属の多年草で、学名は Gagea lutea。英名は Yellow star-of-bethlehem。
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Yhe yellow star-of-bethlehem (Gagea lutea) belongs to Orchidaceae (the Orchid family). It is a perennial herb that is distributed northward from Chubu-district of Honshu to Hokkaido in Japan and northern Eurasia. This herb grows in fields and mountains, and can reach 15-25 cm in height. The bulb is ovate and sends out one linear leaf. The umbel is borne on the flowering stalk and bloom 6-10 yellow flowers from April to May. The fruits are round capsules and composed of 3 segments.
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[上・中1] 長野県岡谷市長地にて、2008年04月19日撮影。(photo by Takao Ito) [中2〜4・下] 宮城県仙台市太白区「天守閣自然公園」にて、2018年04月12日撮影。
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