Lindernia crustacea (L.) F.Muell.

Japanese: ウリクサ(瓜草) - ウリクサ（英語表記）Lindernia crustacea (L.) F.Muell.

A weed that grows in slightly humid places such as fields and gardens, it is an annual plant of the Scrophulariaceae family (illustration). It produces pale purple, labiata flowers from summer to autumn. The Japanese name comes from the fact that the fruit resembles a gourd. The stem branches sparsely and spreads out, reaching a length of 10-20 cm. The leaves have short stalks, are ovate, not very pointed at the tip, 7-20 mm long, 6-13 mm wide, and have coarse serrations. A single flower is produced on a thin stalk extending from the side of the upper leaf. The calyx is tubular with five short lobes at the tip and five ridges. The corolla is about 7 mm long.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

畑や庭などのやや湿気の多い所に生える雑草で，ゴマノハグサ科の一年草（イラスト）。夏から秋にかけて淡紫色の唇形花をつける。和名は果実が瓜に似るのでいう。茎はまばらに分枝して広がり，長さ10～20cm。葉は短い柄があり，卵形で先はあまりとがらず，長さ7～20mm，幅6～13mm，粗い鋸歯がある。上部の葉のわきから細い花柄を伸ばして1花をつける。萼は筒形で先が短く5裂し，5本の稜がある。花冠は長さ約7mm。

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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