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Square-stalked Willowherb - Epilobium tetragonum
Medium to tall plant with long strap shaped, toothed leaves. The pink flowers have four notched petals and a club shaped stigma. The stem is square, and the stem and inflorescences have no glandular hairs. It perennates by loose leaf rosettes.
One of four similar species; E obscurum, E roseum and E ciliatum also have club-shaped stigma. E roseum has many glandular hairs and longer petioles, and is on the VC55 Rare Plant Register. E obscurum has few glandular hairs and perennates with leafy stolons. E ciliatum has numerous glandular hairs on the upper parts of the stem, sepals and parts of the fruits, and perennates with dense leafy basal rosettes. Hybrids also occur.
Photograph the plant in its habitat, plus detailed photographs of flowers, stems and inflorescences
Damp areas such as ditches, stream sides and woodland clearings.
July and August.
Perennial.
Fairly frequent in lowland England and Wales north to Yorkshire.
Occasional in Leicestershire and Rutland. In the Flora of Leicestershire (Primavesi & Evans, 1988) it was found in 53 of the 617 tetrads.
In the VC55 checklist (Jeeves 2011) it is listed as Native; occasional
Leicestershire & Rutland Map
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Species profile
- Common names
- Southern Willow-Herb, Square-stalked Willowherb, Square-Stemmed Willow-Herb
- Species group:
- Wildflowers
- Kingdom:
- Plantae
- Order:
- Myrtales
- Family:
- Onagraceae
- Records on NatureSpot:
- 19
- First record:
- 22/08/2007 (Dave Wood)
- Last record:
- 16/07/2020 (Calow, Graham)
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