Japanese name: タチイヌノフグリ（立犬陰嚢） Scientific name:Veronica arvensis
[Overview]
An annual about 10–40 cm tall, found along roadsides.
The stem stands upright and has short hairs.
The leaves are simple and opposite, broadly ovate, 6–20 mm long and 4–18 mm wide, with sparse hairs on both surfaces.
The leaf margins have large, blunt serrations.
The leaves on the lower part of the stem have petioles.
Flowers are borne singly in the upper leaf axils of the stem.
The corolla is 4-lobed, 4 mm across and pale blue.
The fruit is a flat, obcordate capsule.
[History]
It became naturalized in Tokyo in the early Meiji era (around 1883) and then spread throughout the country.
