のはらむらさき (野原紫) [Index] [Back] ヨーロッパからシベリア、ヒマラヤ西部それにアフリカ北西部が原産です。わが国でも１９３６年に千葉県で発見され、その後、東北地方でも帰化が確認されています。畑地や道ばたなどに生え、高さは１０〜４０センチになります。茎は直立して、よく分枝します。全体に白色の軟毛に被われます。葉は披針形から長楕円形で基部はやや細くなり、互生します。４月から１０月ごろ、茎頂に巻いた花序をだし、直径３ミリほどの淡青色の花を咲かせます。  ムラサキ科ワスレナグサ属の１年草または２年草で、学名は Myosotis arvensis。英名は Field forget-me-not。  The Field forget-me-not (Myosotis arvensis) belongs to Boraginaceae (the Borage family). It is an annual or a biennial herb that is native to Europe, Siberia, western Himalaya and northwestern Africa. In Japan, it was discovered in Chiba Prefecture in 1936, and has since been confirmed as naturalized in the Tohoku region. It grows in fields and along roadsides, and is 10 to 40 cm tall. The stem is upright and often branched. The whole plant is covered in soft white hairs. The leaves are lanceolate to oblong, with a slightly narrowed base, and are arranged alternately. From April to October, it produces a rolled inflorescence around the top of the stem, with light blue flowers about 3 mm in diameter.  宮城県仙台市泉区「水の森公園」にて、2024年09月10日撮影。  Shu Suehiro shu@botanic.jp