Japanese name: ホシアサガオ（星朝顔） Scientific name:Ipomoea triloba
[Overview]
A climbing annual.
The whole plant is almost hairless.
The vines have 4 ridges, branch well, grow to several meters, and twine around other plants.
The leaves are alternate, broadly ovate, 3–8 cm long and 2.5–8 cm wide, sometimes 3-lobed, with an abruptly pointed tip.
The leaf margins are entire.
Leaf shape is highly variable.
Inflorescences 3–10 cm long arise from the leaf axils, each bearing 1–7 flowers.
The flowers are funnel-shaped, about 1.5 cm across, shallowly 5-lobed with pointed lobe tips, and star-shaped when seen from the front.
The flowers are pale reddish purple with a darker reddish purple center.
The flower stalks have wart-like projections.
The fruit is spherical with long hairs on the upper part.
[History]
It has been naturalized from the Kanto region westward since after World War II.
