Japanese name: アカバナ（赤花） Scientific name:Epilobium pyrricholophum
[Overview]
A perennial 15–90 cm tall, found in wetlands in hills and fields.
The stem branches in the upper part.
Slender stolons extend from the base of the stem and overwinter.
Leaves are simple and opposite, ovate to ovate-lanceolate, 2–6 cm long and 0.7–3 cm wide.
The leaf margins are serrated.
The leaf base often clasps the stem, and the leaves and stem may be tinged with red.
Flowers are solitary in the leaf axils, 0.5–1 cm across, with 4 petals, and magenta-purple.
The outside of the calyx is densely covered with glandular hairs.
A slender ovary with glandular hairs lies below the flower.
The fruit is a slender club-shaped capsule 3–8 cm long with glandular hairs.
When ripe, the fruit splits into 4 and scatters many seeds with a reddish brown pappus.
