Species in the genus Lactuca:

Lactuca sororia / Murasakinigana ムラサキニガナ

Lactuca sororia is a 0.6-1.2m tall perennial found on forest edges in mountainous regions. Leaves are of alternate phyllotaxis; those on the lower parts are pinnately aperture, and those on the upper parts are small, like a lanceolate. Flower heads, approximately 1cm in diameter, set themselves in panicles and bloom facing downward. Involucres measure about 1.2cm long, and peduncles have glandular hairs. Bloom time: June-August.