noun
variableleaf yellowcress; Rorippa indica
A common weed in the mustard family, found in fields and roadsides in Japan. The name literally means 'dog mustard', implying it is a false or inferior mustard.
道端にイヌガラシがたくさん生えている。
A lot of variableleaf yellowcress is growing by the roadside.
イヌガラシは春に小さな黄色い花を咲かせる。
Variableleaf yellowcress blooms small yellow flowers in spring.
Compound of 犬 (inu, 'dog') and 芥子/辛子 (garashi, 'mustard'). The 'dog' prefix often indicates a false or inferior version of something, so the name means 'false mustard' or 'wild mustard'.