Japanese name: シソクサ（紫蘇草） Scientific name:Limnophila chinensis subsp. aromatica
[Overview]
An annual 10–30 cm tall, growing in rice paddies, wetlands and similar places.
The whole plant has a fragrance like that of perilla.
The stem branches little.
Leaves are simple, opposite or in whorls of 3 on the lower part of the stem, ovate-oblong to long-ovate, about 1–3 cm long, with many oil dots, and stalkless.
The leaf margins have a few teeth.
The flowers are white and borne singly at the tips of slender flower stalks extending from the leaf axils.
The corolla is tubular, with a 5-lobed lip-shaped tip; the lower lip is 3-lobed.
The fruit is an ovoid capsule enclosed by the calyx.
