Arabidopsis thaliana

Japanese: シロイヌナズナ

A naturalized weed of the Brassicaceae family that grows in fields and roadsides (illustration). The basal leaves are rosette-shaped, spatula-shaped, and 1-2.5 cm long. In spring, upright stems grow, reaching a height of 15-30 cm. The basal leaves have forked hairs, but the stems are hairless. The flowers appear in corymbs from April to May, are white, about 5 mm in diameter, and have four sepals and four inflorescences arranged in a cross shape, with two short stamens and four slightly longer stamens. There is one pistil. The fruit is a slender rod with a stalk, 10-16 mm long, that stands up at an angle.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

畑や道端に生えるアブラナ科の帰化雑草（イラスト）。根出葉はロゼット状でへら形，長さ1～2.5cm。春になると，直立する茎を出し，高さ15～30cm。根出葉には叉（さ）状に分かれた毛があるが，茎には毛がない。花は4～5月ころ，散房花序につき，白色で直径5mmくらい。各4枚の萼片と花序が十字形に配列し，短い2本のおしべと4本の少し長いおしべがある。めしべは1本。果実は柄のある長さ10～16mmの細い棒状で斜めに立ちあがる。

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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