Notes For Reference:-

Species, Varieties, or Forms in the Genus Pilea:

Pilea hamaoi / Mizu
Pilea japonica / Yamamizu
Pilea peploides / Kokemizu
Pilea petiolaris / Miyamamizu
Pilea pseudopetiolaris / Komiyamamizu
Pilea puila / Aomizu　

Pilea japonica / Yamamizu ヤマミズ

Pilea japonica is an annual herb that grows 10-20cm in height and is found in damp, shady areas of mountainous regions. The stems are weak, tinging brown. Leaves, with petioles, are opposite, in the shape of a broadly ovate, 4-6cm in length, with short tail-like tips, and with coarse serrations on margins. Leaf axils on the upper parts emerge as 2-3cm-long peduncles with dense light green flowers mingling. Bloom September-October.