Triodanis perfoliata (clasping Venus' looking-glass, "Kikyoso")

Japanese name: キキョウソウ （桔梗草）
Scientific name: Triodanis perfoliata

[Overview]
An annual about 80 cm tall.
The stem branches in the lower part and is erect.
Leaves are simple and alternate, round, with toothed margins.
The leaf base clasps the stem.
The flowers are solitary in the leaf axils, star-shaped, purple and about 1.5–1.8 cm across.
The flower color varies.
The flowers on the lower part of the stem are cleistogamous.
The fruit is a cylindrical capsule.

[History]
Naturalization was confirmed in Tokyo in the 1940s, and it is found along roadsides and in fields in many places.

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