Epilobium tetragonum Square-stalked Willowherb

A perennial willowherb which often grows in dry places such as on walls, in gravelly tracks, roadsides and open mosaic habitats but also as a weed in gardens and arable fields. Leaves are narrowly lanceolate and the flowers have a club-shaped stigma. The square stem with four raised lines is usually quite obvious but one of its most conspicuous features is the very long fruits. It is a southern species in the British Flora, absent from most of Scotland and Ireland and scarce in parts of Wales, particularly in the uplands. It is widespread but rather local in West Glamorgan.

Native