Epilobium hornemannii

Hornemann's willowherb or Miyama Akabana in Japanese（Epilobium hornemannii）
is an alpine perennial in the genus Epilobium of the Onagraceae family, found in the cool temperate zones of the Northern Hemisphere, including Japan.
In Japan, it grows wild on alpine gravelly slopes from central Honshu northward to Hokkaido.
It grows to a height of 5–45 cm. The stem has two ridges and is covered with glandular hairs.
The leaves are oblong to lanceolate, with serrated margins.
A conical inflorescence extends from the leaf axils near the top of the stem, bearing sparse, small, pale red or, rarely, white flowers.
The flowers have four petals, each with two shallow lobes at the tip. There are eight stamens: four are long, and the remaining four are short.
The stigma of the pistil is club-shaped.
After flowering, it produces four-angled capsules 2.5–5 cm long.
The seeds are oblanceolate, 1–1.2 mm long.

Common name: Hornemann's willowherb or Miyama Akabana
Scientific name: Epilobium hornemannii
Former scientific name: Epilobium hornemannii subsp. hornemannii
English name: Hornemann’s willowherb,
Taxonomic classification: Kingdom Plantae, Angiosperms, Eudicots, Myrtales, Onagraceae, Epilobium genus, species Epilobium hornemannii
Habitat and distribution: Cool temperate regions of the Northern Hemisphere, including Japan; Distribution in Japan: Alpine areas from central Honshu northward to Hokkaido; Habitat: Gravelly areas,
Life form: Alpine perennial
Plant height: 5–45 cm,
Life form: Alpine perennial,
Leaf texture: Ordinary, Petiole: Very short or absent, Leaf length: 1.5–5.5 cm, Leaf width: 1–3 cm, Leaf shape: Lanceolate, Leaf margin: Coarsely serrate,
Flowering period: July–August, Inflorescence type: Panicle, Flower arrangement: sparse, Flower color: pale pink or, rarely, white, Number of petals: 4, with the tips of the outer two petals shallowly lobed, Number of stamens: 8 (4 long, 4 short), Flower diameter: 0.5 cm,
Fruit type: capsule,

Related Pages
Miyama Akabana (Deep Mountain Red Flower, scientific name: Epilobium hornemannii)