Japanese name: スズコウジュ（鈴香需） Scientific name:Perillula reptans
[Overview]
A perennial 6–40 cm tall, found in places such as the shade of trees in the mountains.
The underground stems are thin and swell into balls in places.
The stem has 4 ridges, branches sparsely, and bears many long soft hairs.
Leaves are simple and opposite, ovate, 1.5–4 cm long and 0.8–2.5 cm wide, with sparse hairs on both sides.
The leaf margins have coarse teeth.
The petiole is 0.5–2 cm long.
An inflorescence 2–10 cm long at the stem tip bears rather sparse, downward-facing flowers.
The flowers are white, lip-shaped, and 5–6 mm long.
The calyx is 3 mm long at flowering and becomes 6–7 mm in fruit, with the lobe tips slightly spiny.
The fruit is a schizocarp.
[Notes]
A relative of the Koju (Elsholtzia), it was named for its bell-shaped flowers.
