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, in the shape of 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.