Japanese name: マツバハルシャギク（松葉波斯菊） Scientific name:Helenium tenuifolium
[Overview]
An annual growing about 10–60 cm tall.
The stem branches well.
Leaves are simple and densely alternate, linear, 2–6 cm long and about 0.2 cm wide, with entire margins and glandular dots.
There is no petiole.
Yellow flower heads 2–3 cm across are borne in corymbs at the stem tips; around each head there are 5–10 ray flowers, whose tips are shallowly 3-lobed.
The tubular flowers in the center rise in a hemispherical mound about 1 cm across.
The fruit is an achene.
[History]
It was introduced as an ornamental at the end of the Meiji period.
In 1958 it was confirmed to have naturalized on reclaimed land in Kitakyushu, Fukuoka.
