ハルザキヤマガラシ
アブラナ目 アブラナ科
ヨーロッパ原産の越年草または短命な多年草で、高さは30～80ｃｍになり、畑地や河川敷に生えています。 日本には明治時代末に麦類に混入して渡来したといわれ、北海道～九州に帰化しています。 花は、5月～6月に咲きます。 種子だけでなく根茎でも繁殖します。
生態系被害防止外来種リスト：その他の総合対策外来種
日本の侵略的外来種ワースト100 （写真）2017.5.21 丹波篠山市今田町木津（加古川支流の東条川河川敷）
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