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ヨーロッパからシベリアに分布しています。ふつう石灰岩地の林や茂みに生え、高さは15〜45センチになります。茎には稜があります。葉は偶数羽状複葉で、卵形から披針形の小葉が2〜4対つきます。巻きひげはありません。4月から6月ごろ、総状花序に赤紫色の花を咲かせます。花は時間がたつと青色に変わります。
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マメ科レンリソウ属の多年草で、学名は Lathyrus vernus。英名は Spring vetchling。
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The Spring vetchling (Lathyrus vernus) belongs to Fabaceae (the Pea family). It is a perennial herb that is native to Europe and Siberia. This herb grows in woods and scrubs, usually on limestone, and can reach 15-45 cm in height. The stems are angled. The leaves are even-pinnate compound with 2-4 pairs of oval or lanceolate-shaped leaflets and without tendrils. The reddish-purple flowers bloom in racemes from April to June. They are becoming blue with age.
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クロアチア・プリトヴィッツェ「湖群国立公園」にて、2012年04月30日撮影。(photo by Aya Suehiro)
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