Japanese name: ユウゲショウ（夕化粧） Scientific name:Oenothera rosea
[Overview]
A perennial 20–40 cm tall, found on sunny roadsides and similar places.
The whole plant has short white hairs.
The stem branches well at the base.
There are basal leaves and stem leaves.
The basal leaves are often pinnately divided.
The stem leaves are simple and alternate, lanceolate, 1–6 cm long and 0.4–2.5 cm wide.
The leaf margins have wavy teeth or are entire.
The flowers are solitary in the leaf axils on the upper part of the stem and are pale pink, 4-petaled, 1–1.5 cm across.
The flowers open from afternoon into the night.
The fruit is a club-shaped capsule that splits into 4 at the tip when ripe.
[History]
It was introduced in the Meiji period as an ornamental plant.
