American Willowherb
Flowerheads - club-shaped stigmas
4+4 anthers
Club-shaped stigma + anthers
Fruits
Leaves
Red stem
Epilobium ciliatum
Onagraceae
June to August
It is found throughout the country.
See the BSBI distribution map for American Willowherb
It grows on disturbed and newly dug ground such as waste land,
gardens, cleared scrub and woodland, and in cracks in walls
and pavements.
It is a neophyte, introduced from North America in the 1890s, and
known in the wild since the 1930s. It is thought to be one of the
UK's most widespread and frequent aliens.
American Willowherb is a perennial herb, growing up to 75cm.
The flowers are 4-merous, pink-purple, up to 1cm across, with
separated, lobed petals.
There are 4+4 stamens, but often only 4 are obvious.
The stigma is club-shaped and slightly longer than the stamens.
The fruits are relatively short.
Leaves are narrow and lanceolate.
Stems are reddish and downy.
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Flowerheads - club-shaped stigmas
4+4 anthers
Club-shaped stigma + anthers
Fruits
Leaves
Red stem
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