Japanese name: ヒルガオ（昼顔） Scientific name:Calystegia pubescens
[Overview]
A twining perennial found in fields and grasslands.
The vines twine around other plants.
The leaves are alternate, 5–10 cm long, halberd-shaped to arrowhead-shaped; the two margins in the middle of the leaf are parallel, and the lateral lobes at the base either spread downward or are not well developed.
The lateral lobes are usually not divided.
The petiole is 1–4 cm long.
The flowers are solitary in the leaf axils, and the flower stalk is round in cross section, without wings.
The corolla is pale pink, a pentagonal funnel shape about 5 cm across, with a white center.
The bracts are ovate, about 2–2.5 cm long, with an obtuse to notched tip and a slightly heart-shaped base.
The fruit is a globose capsule, but it rarely sets fruit.
